Picture
Attipat Rajagopal


 
attipat.rajagopal@inspireinstitute.org

Biography

 
a.​Biography
​Harvard University, PhD, Applied Physics 1960-1964, “Itinerant Electron Ferromagnetism” (Advisor: Harvey Brooks)
​Indian Institute of Science, M.Sc (by Thesis), Physics 1957-1960, “Lattice Dynamics of Zinc Blende” (Advisor: R. Srinivasan)
​Karnatak University, India, B.Sc., 1957
 
b.​Professional Affiliations
​President, Inspire Institute Inc., Alexandria, VA, 22303 (USA); Founding Member
​Harish-Chandra Research Institute, Allahabad, India, Adjunct Professor (2012-2013)
​Northwestern University, Department of Materials Science and Engineering
​Visiting Scholar, 2010 – 2012
Naval Research Laboratory, Washington D.C., Research Physicist 1985-2006
​(Retired Feb.2006) but reappointed as Visiting Scholar 2006-2009
​Department of Physics, Louisiana State University, Professor of Physics, 1972-1985
 
c.​Research Interests
Many Body Physics with emphasis on variety of topics in Theoretical Condensed Matter, Quantum Statistical Mechanics, Basic issues in Quantum Mechanics, and Quantum Information Science. Long standing collaborators are acknowledged here: R. Srinivasan, G. S. Grest, J. Callaway, J. C. Kimball, K. L. Ngai, S. Teitler, R. W. Rendell, Sumiyoshi Abe, S. D. Mahanti, S. S. Jha, A. R. Usha Devi, and Sudha.
 
d. ​Honors
Tata Memorial Travel Grant (1960), Gordon McKay Prize Fellowship (1960) and a General Electric Fund Fellowship (1961) enabled study at Harvard.
​Fellow of the American Physical Society (elected 1974)
“Distinguished Research Master Award” for 1984 by the Louisiana State University’s Council on Research
Fellow of the Washington Academy of Sciences (elected 1994)
Award for “Outstanding Achievement in the Field of Engineering Sciences” for 1994 by the Washington Academy of Sciences
Selected “Outstanding Referee of the American Physical Society” (2008)
 
 
 
 
 
 

 

Research Interests

Honors

Professional Affiliations

Paper Publications

2013
Paper Title Authors Journal Reference Archive Reference Year
Equivalence of classicality and separability based on P-phase space representation of symmetric multiqubit statesA.R. Usha Devi, A. K. Rajagopal Quantum Information Processing arXiv:1306.2825[pdf]2013
General pairing theory for condensed and noncondensed Cooper pairs of a superconductor in a high magnetic fieldPeter Scherpelz, Dan Wulin, Betislav Sopik, K. Levin, A. K. Rajagopal Phys. Rev. B 87, 024516 cond-mat2013
Inversion of moments to retrieve joint probabilities in quantum sequential measurementsH. S. Karthik, Hemant Katiyar, Abhishek Shukla, T. S. Mahesh, A. R. Usha Devi, A. K. Rajagopal PRA 87, 052118 quant-ph2013
2012
Paper Title Authors Journal Reference Archive Reference Year
Macrorealism from entropic Leggett-Garg inequalitiesA. R. Usha Devi, H. S. Karthik, Sudha, A. K. Rajagopal PRA 87, 052103 (2013) quant-ph2012
Monogamy of quantum correlations in three qubit pure states using Rajagopal-Rendell quantum deficitSudha, A. R. Usha Devi, A. K. Rajagopal Phys. Rev. A85 012103 quant-ph2012
Pseudogap effects of Fermi gases in the presence of a strong effective magnetic fieldPeter Scherpelz, Dan Wulin, K. Levin, A. K. Rajagopal Phys. Rev. A 87, 063602 (2013) quant-ph2012
Quantum discord and classical correlation can tighten the uncertainty principle in the presence of quantum memoryArun Kumar Pati, Mark M. Wilde, A. R. Usha Devi, A. K. Rajagopal, Sudha Phys. Rev. A 86, 042105 quant-ph2012
Quantum reading of digital memory with non-Gaussian entangled lightJ. Prabhu Tej, A. R. Usha Devi, A. K. Rajagopal PRA87, 052308 (2013) quant-ph2012
2011
Paper Title Authors Journal Reference Archive Reference Year
Majorana representation of symmetric multiqubit statesA.R. Usha Devi, Sudha, A.K.Rajagopal Quantum Information Processing, Vol. 11, Issue 3, pp 685-710 (2012) quant-ph2011
Open-system quantum dynamics with correlated initial states, not completely positive maps, and non-MarkovianityA. R. Usha Devi, A. K. Rajagopal, Sudha Phys. Rev. A 83, 022109 quant-ph2011
Quantum dynamical maps and MarkovianityA. R. Usha Devi, A. K. Rajagopal, Sudha quant-ph2011
Quantumness of correlations and entanglementA. R. Usha Devi, A. K. Rajagopal, Sudha Int. J. Quantum Inform. 09, 1757 quant-ph2011
2010
Paper Title Authors Journal Reference Archive Reference Year
Determining the whole pure symmetric N-qubit state from its partsA R Usha Devi, Sudha, A. K. Rajagopal quant-ph2010
Entropic characterization of separability in Gaussian statesSudha, A. R. Usha Devi, A. K. Rajagopal Phys. Rev. A 81, 024303 quant-ph2010
Interconvertibility and irreducibility of permutation symmetric three qubit pure statesA R Usha Devi, Sudha, A K Rajagopal quant-ph2010
Kraus representation of quantum evolution and fidelity as manifestations of Markovian and non-Markovian formsA. K. Rajagopal, A. R. Usha Devi, R. W. Rendell Phys. Rev. A 82, 042107 quant-ph2010
Thermostatistical aspect of Werner-type states and quantum entanglementSumiyoshi Abe, A. R. Usha Devi, A. K. Rajagopal J. Phys. A: Math. Theor. 43, 045303 quant-ph2010
2009
Paper Title Authors Journal Reference Archive Reference Year
Dynamical evolution of quantum oscillators toward equilibriumA. R. Usha Devi, A. K. Rajagopal Phys. Rev. E 80, 011136 quant-ph2009
Measurement of a subsystem of a coupled quantum systemMichael Steiner, M. Frey, A. Gulian, R. W. Rendell, A. K. Rajagopal Proc. SPIE, Vol. 7342, 73420F2009
Quantum target detection using entangled photonsA. R. Usha Devi, A. K. Rajagopal Phys. Rev. A 79, 062320 quant-ph2009
2008
Paper Title Authors Journal Reference Archive Reference Year
A POVM view of the ensemble approach to polarization opticsSudha, A.V. Gopala Rao, A. R. Usha Devi, A.K. Rajagopal J. Opt. Soc. Am. A 25, 874 quant-ph2008
A scheme for amplification and discrimination of photonsA. R. Usha Devi, R. Prabhu, A. K. Rajagopal J. Phys. B: Atomic, Molecular, & Optical Physics, 41, 235501 quant-ph2008
Distinctive sub-dynamics features of bipartite systemsA.K. Rajagopal, A. R. Usha Devi, R. W. Rendell, Michael Steiner quant-ph2008
Electron spin dynamics due to hyperfine coupling in quantum dotsL. M. Woods, T. L. Reinecke, A. K. Rajagopal Phys. Rev. B 77, 0733132008
Generalized Information Theoretic Measure to Discern the Quantumness of CorrelationsA. R. Usha Devi, A. K. Rajagopal Phys. Rev. Lett. 100, 140502 quant-ph2008
Quantum Mechanical Basis of Vision, by Ramakrishna ChakravarthiA. R. Usha Devi, A. K. RajagopalProceedings (Neurons and Cognition) of the India-US Workshop on Science and Technology at the Nabo-Bio Interface, Bhubaneswar, India February 19-22 quant-ph2008
Separability bounds on multiqubit moments due to positivity under partial transposeA. R. Usha Devi, A. K. Rajagopal Phys. Rev. A 78, 062334 quant-ph2008
2007
Paper Title Authors Journal Reference Archive Reference Year
Characterizing Multiparticle Entanglement in Symmetric N-Qubit States via Negativity of Covariance MatricesA. R. Usha Devi, R. Prabhu, A. K. Rajagopal Phys. Rev. Lett. 98, 060501 quant-ph2007
Collective multipolelike signatures of entanglement in symmetric N-qubit systemsA. R. Usha Devi, R. Prabhu, A. K. Rajagopal Phys. Rev. A 76, 012322 quant-ph2007
Constraints on the uncertainties of entangled symmetric qubitsA. R. Usha Devi, M. S. Uma, R. Prabhu, A. K. Rajagopal Phys. Lett. A 364, 203 quant-ph2007
2006
Paper Title Authors Journal Reference Archive Reference Year
Decoherence and fidelity of single-electron spin states in quantum dots: effects of nuclear hyperfine coupling and double occupancyA. K. Rajagopal, S. D. Mahanti, Sudhanshu S. Jha J. Physics: Condensed Matter 18, 106772006
Electron Spin Dynamics in a Quantum Dot due to hyperfine coupling with Nuclei in the Dot; an exact analysisA. K. Rajagopal quant-ph2006
Structure of the phase in pure two-mode Gaussian statesR. W. Rendell, A. K. RajagopalPhys. Rev. A 73, 0138062006
Superstatistics; a quantum generalizationA. K. Rajagopal cond-mat2006
2005
Paper Title Authors Journal Reference Archive Reference Year
Classical statistics inherent in a quantum density matrixA. K. Rajagopal, R. W. RendellPhys. Rev. A 72, 0223222005
Entanglement of pure two-mode Gaussian statesR. W. Rendell, A. K. RajagopalPhys. Rev. A 72, 0123302005
2004
Paper Title Authors Journal Reference Archive Reference Year
Heat and entropy in nonextensive thermodynamicsA. K. RajagopalInvited paper for a special issue in Journal of Continuum Mechanics and Thermodynamics, 16, 2572004
2003
Paper Title Authors Journal Reference Archive Reference Year
Revivals and entanglement from initially entangled mixed states of a damped Jaynes-Cummings modelR. W. Rendell, A. K. RajagopalPhys. Rev. A 67, 0621102003
Validity of the Second Law in Nonextensive Quantum ThermodynamicsSumiyoshi Abe, A. K. RajagopalPhys. Rev. Lett. 91, 1206012003
2002
Paper Title Authors Journal Reference Archive Reference Year
Green's function theory of electrical and thermal transport in single-wall carbon nanotubesP. J. Lin-Chung, A. K. RajagopalPhys. Rev. B 65, 1134082002
Robust and fragile entanglement of three qubits: Relation to permutation symmetryA. K. Rajagopal, R. W. RendellPhys. Rev. A 65, 0323282002
Separability and correlations in composite states based on entropy methodsA. K. Rajagopal, R. W. RendellPhys. Rev. A 66, 0221042002
2001
Paper Title Authors Journal Reference Archive Reference Year
Decoherence, correlation, and entanglement in a pair of coupled quantum dissipative oscillatorsA. K. Rajagopal, R. W. RendellPhys. Rev. A 63, 0221162001
Quantum density matrix description of nonextensive systemsA. K. RajagopalLecture Notes in Physics series, Nonextensive Statistical Mechanics, eds. Sumiyoshi Abe and Yuko Okamoto, Pp. 99 - 156, Springer-Verlag, New York2001
Two qubits in the Dirac representationA. K. Rajagopal, R. W. RendellPhys. Rev. A 64, 0243032001
2000
Paper Title Authors Journal Reference Archive Reference Year
Broken-symmetry-adapted Green function theory of condensed matter systems: Towards a vector spin-density-functional theoryA. K. Rajagopal, Mogus MochenaPhys. Rev. B 62, 154612000
1999
Paper Title Authors Journal Reference Archive Reference Year
Fractional powers of operators of Tsallis ensemble and their parameter differentiationA. K. RajagopalInvited paper for a special issue of Brazilian J. Phys. 29, 611999
Implications of Form Invariance to the Structure of Nonextensive EntropiesA. K. Rajagopal, Sumiyoshi AbePhys. Rev. Lett. 83, 17111999
Quantum entanglement and the maximum entropy states from the Jaynes principleA. K. RajagopalPhys. Rev. A60, 4338 quant-ph1999
Quantum entanglement inferred by the principle of maximum nonadditive entropySumiyoshi Abe, A. K. RajagopalPhys. Rev. A 60, 34611999
Quantum statistical mechanics for nonextensive systemsE. K. Lenzi, R. S. Mendes, A. K. RajagopalPhys. Rev. E 59, 13981999
Theoretical suggestion for experimental detection of magnetism in atomic clusters by photon scatteringMogus Mochena, A. K. Rajagopal, O. J. GlembockiPhys. Rev. B 59, R6891999
Theory of thermopower in disordered mixed crystals:Application to Si-Ge systemsP. J. Lin-Chung, A. K. RajagopalPhys. Rev. B 60, 120331999
1998
Paper Title Authors Journal Reference Archive Reference Year
A functional theory of interacting local spins, spin polarized electrons, and ions: half metallic magnetsA. K. RajagopalElectron Density Functional Theory: Recent Progress and New Directions (eds. J. F. Dobson, G. Vignale, and M. P. Das ), pp.361 - 371, Plenum Press, New York1998
An approach to nonextensive, nonequilibrium systems: old realizations and a new dream?A. K. RajagopalNOVEL MATERIALS DESIGN AND PROPERTIES, eds. B. K. Rao and S. N. Behara, p.427, Nova Science Publisher, Inc., New York1998
Effective action in density functional theory and the Berry phaseA. K. RajagopalElectron Density Functional Theory: Recent Progress and New Directions, (eds. J. F. Dobson, G. Vignale, and M. P. Das), pp.217 - 225, Plenum Press, New York1998
Electron correlations in Coulomb systems in 2- and 3-dimensions - Av OverviewA. K. RajagopalStrongly Coupled Coulomb Systems, eds. G. J. Kalman, J. M. Rommel, and K. Blagoev, p. 49, Plenum Press, New York1998
Equations of Motion in Nonequilibrium Statistical Mechanics for Nonextensive SystemsA. K. RajagopalPhysica A253, 2711998
Quantum Statistical Mechanics for Nonextensive Systems: Prediction for Possible Experimental TestsA. K. Rajagopal, R. S. Mendes, E. K. LenziPhys. Rev. Lett. 80, 39071998
Spin-orbit interactions in the many-body theory of magnetic electron systemsA. K. Rajagopal, Mogus MochenaPhys. Rev. B 57, 115821998
The Principle of Detailed Balance and the Lindblad Dissipative Quantum DynamicsA. K. RajagopalPhys. Lett. A246, 2371998
1997
Paper Title Authors Journal Reference Archive Reference Year
Action principle for nonequilibrium statistical dynamics based on the Lindblad Density Matrix EvolutionA. K. RajagopalPhys.Letts. A228, 661997
Intralayer and interlayer spin-singlet pairing and energy gap functions with different possible symmetries in high-Tc layered superconductorsSudhanshu S. Jha, A. K. RajagopalPhys. Rev. B 55, 152481997
1996
Paper Title Authors Journal Reference Archive Reference Year
A time-dependent variational principle and the effective action in density functional theory and Berry's phaseA. K. RajagopalPhys. Rev. A 54, 39161996
Anisotropic order parameters with s- and d-wave-like symmetry and the transition temperature in high-Tc layered superconductorsA. K. Rajagopal, Sudhanshu S. JhaPhys. Rev. B 54, 43311996
Dynamic linear response theory for a nonextensive system based on the Tsallis prescriptionA. K. RajagopalPhys. Rev. Lett. 76, 34691996
Implications of the intrinsic decoherence in quantum mechanics to nonequilibrium statistical mechanicsA. K. RajagopalPhys. Rev. A 54, 11241996
von Neumann and Tsallis entropies associated with the Gentile interpolative quantum statisticsA. K. RajagopalPhys. Lett. A214, 1271996
1995
Paper Title Authors Journal Reference Archive Reference Year
Exclusion statistics: density matrix and its implicationsA. K. RajagopalPhysica B212, 3091995
Helical coordinate system and electrostatic fields of double-helix charge distributionsA. K. RajagopalPhys. Rev. E 52, 9011995
Maximum Entropy Approach: Uncertainty Relations and Determination of the States of a HamiltonianA. K. RajagopalSelected Topics in Mathematical Physics: Professor R. Vasudevan Memorial Volume, (eds. R. Sridhar, K. Srinivasa Rao, and Vasudevan Lakshminarayanan) p.166, Allied Publishers Limited, New Delhi1995
Nonequilibrium time-dependent functional theory for coupled interacting fieldsA. K. Rajagopal, F. A. BuotPhys. Rev. A 51, 18831995
The Sobolev inequality and the Tsallis entropic uncertainty relationA. K. RajagopalPhys. Letts. A205, 321995
Time-dependent functional theory for superconductorsA. K. Rajagopal, F. A. BuotPhys. Rev. B 52, 67691995
Variational principles for ensembles of quantum statesA. K. Rajagopal, F. A. BuotPhys. Rev. A 51, 17701995
von Neumann Entropy Associated with the Haldane Exclusion StatisticsA. K. RajagopalPhys. Rev. Lett. 74, 10481995
1994
Paper Title Authors Journal Reference Archive Reference Year
A Time-dependent Functional Theory for the Electron-Ion SystemA. K. RajagopalPhys. Letts. A193, 3631994
Magnetoplasma oscillations in nanoscale tubules with helical symmetryP. J. Lin-Chung, A. K. RajagopalPhys. Rev. B 49, 84541994
Quantum dynamics of molecular motions based on a functional methodA. K. Rajagopal, F. A. BuotPhys. Rev. E 50, 7211994
Time-dependent Functional Theory of Coupled Electron and Electrodynamic Fields in Condensed Matter SystemsA. K. RajagopalPhys. Rev. A50, 76, 37591994
1993
Paper Title Authors Journal Reference Archive Reference Year
Coordinate and Momentum Representations of the Q-deformed Oscillator and Their InterpretationA. K. RajagopalPhys. Rev. A47,72, 34651993
High-frequency behavior of quantum-based devices: Equivalent-circuit, nonperturbative-response, and phase-space analysesF. A. Buot, A. K. RajagopalPhys. Rev. B 48, 172171993
Structure of intralayer and interlayer pairing interactions, the anisotropy of order parameters, and the transition temperature in layered superconductorsA. K. Rajagopal, Sudhanshu S. JhaPhys. Rev. B 47, 27801993
Superconductivity in High Magnetic Fields from a Microscopic TheoryA. K. RajagopalFrontiers in Solid State Sciences(edited by L.C. Gupta and M.S. Multani) Vol.I.,Selected Topics In Superconductivity, World Scientific, (Singapore) P. 1931993
Vortex-lattice solutions of the microscopic Gorkov equations for a type-II superconductor in a strong quantizing magnetic fieldJ. C. Ryan, A. K. RajagopalPhys. Rev. B 47, 88431993
1992
Paper Title Authors Journal Reference Archive Reference Year
Bivariate Averaging Functions, Translation and Scale Autocorrelations, Fourier and Mellin Transforms, the Wiener-Khinchine Theorem, and their Inter-relationshipsA. K. RajagopalPramana-J. Phys. 38, 2331992
Solutions of the Microscopic Gorkov Equations for a Superconductor in a Strong Quantising Magnetic FieldA. K. RajagopalPhys. Rev. B46, 69, 12241992
1991
Paper Title Authors Journal Reference Archive Reference Year
Dynamic linear responseA. K. Rajagopal, S. TeitlerPhys. Rev. A 43, 20591991
High-Tc superconductivity of YBa2Cu3O7/PrBa2Cu3O7 superlattices: An interlayer-coupling modelA. K. Rajagopal, S. D. MahantiPhys. Rev. B 44, 102101991
Linearized gap equation for a superconductor in a strong magnetic fieldA. K. Rajagopal, R. VasudevanPhys. Rev. B 44, 28071991
Quantum-state representations in a strong quantizing magnetic field: Pairing theory of superconductivityA. K. Rajagopal, J. C. RyanPhys. Rev. B 44, 102801991
Three Lectures on Aspects of High Tc SuperconductivityA. K. RajagopalThe Winter School at TIFR (Dec 26, 1989-Jan 6, 1990) Theoretical and Experimental Approaches to High-Tc and Conventional Superconductors (Edited by L.C. Gupta) Nova Science Publishers Inc. (New York) Pp 141-1681991
1989
Paper Title Authors Journal Reference Archive Reference Year
Minimum uncertainty products from the principle of maximum entropyA. K. Rajagopal, S. TeitlerPhys. Rev. A 40, 5151989
Production of number states of the electomagnetic fieldF. W. Cummings, A. K. RajagopalPhys. Rev. A 39, 34141989
1986
Paper Title Authors Journal Reference Archive Reference Year
Exchange-correlation potentials for spin-polarized systems at finite temperaturesD. G. Kanhere, P. V. Panat, A. K. Rajagopal, J. CallawayPhys. Rev. A 33, 4901986
New approach to the solution of quantum problemsF. W. Cummings, A. K. RajagopalPhys. Rev. A 34, 39501986
1985
Paper Title Authors Journal Reference Archive Reference Year
A Density Functional Formalism for Condensed Matter SystemsA. K. RajagopalLecture Notes in the Advanced Science Institute Series on the Density Functional Methods in Physics, Eds. M. Dreizler and J. da Providencia, Plenum Press, 1591985
Current-density-functional theory for time-dependent systemsBu-Xing Xu, A. K. RajagopalPhys. Rev. A 31, 26821985
Quantum theory of decaying systems from the canonical decomposition of dynamical semigroupsAleksander Weron, A. K. Rajagopal, Karina WeronPhys. Rev. A 31, 17361985
Spin waves at surfaces and interfaces in cubic Heisenberg systemsBu Xing Xu, Mark Mostoller, A. K. RajagopalPhys. Rev. B 31, 74131985
1984
Paper Title Authors Journal Reference Archive Reference Year
Boltzmann's H theorem and the generalized master equationA. K. Rajagopal, S. Teitler, K. L. Ngai, R. W. RendellPhys. Rev. A 29, 9691984
Comment on "Time Decay of the Remanent Magnetization in Spin-Glasses"K. L. Ngai, A. K. RajagopalPhys. Rev. Lett. 53, 10241984
1983
Paper Title Authors Journal Reference Archive Reference Year
Classical Statistics Inherent in Pure Quantum StatesA. K. RajagopalPhys. Rev. A27, 5581983
Paley-Wiener criterion for relaxation functionsK. L. Ngai, A. K. Rajagopal, R. W. Rendell, S. TeitlerPhys. Rev. B 28, 60731983
1982
Paper Title Authors Journal Reference Archive Reference Year
Effects of correlation and Breit and transverse interactions in the relativistic local-density theory for atomsM. V. Ramana, A. K. Rajagopal, W. R. JohnsonPhys. Rev. A 25, 961982
Erratum: Some simple, exactly soluble models for surfaces and interfacesMark Mostoller, A. K. RajagopalPhys. Rev. B 26, 34751982
New coherent states with applications to time-dependent systemsA. K. Rajagopal, John T. MarshallPhys. Rev. A 26, 29771982
New Interpretation of the Scalar Product in Hilbert SpaceR. F. O'Connell, A. K. RajagopalPhys. Rev. Lett. 48, 5251982
Relaxation processes and time-scale transformationsS. Teitler, A. K. Rajagopal, K. L. NgaiPhys. Rev. A 26, 29061982
Some simple, exactly soluble models for surfaces and interfacesMark Mostoller, A. K. RajagopalPhys. Rev. B 25, 61681982
1981
Paper Title Authors Journal Reference Archive Reference Year
Comment on electromagnetic potential in Thomas-Fermi-Dirac atomsM. V. Ramana, A. K. RajagopalPhys. Rev. A 23, 20851981
Inhomogeneous relativistic electron gas: Correlation potentialM. V. Ramana, A. K. Rajagopal,Phys. Rev. A 24, 16891981
1980
Paper Title Authors Journal Reference Archive Reference Year
Exchange-correlation potential for inhomogeneous electron systems at finite temperaturesUday Gupta, A. K. RajagopalPhys. Rev. A 22, 27921980
Inhomogeneous electron gas at nonzero temperatures: Exchange effectsUday Gupta, A. K. RajagopalPhys. Rev. A 21, 20641980
Self-consistent relativistic density-functional theory: Application to neutral uranium atom and some ions of lithium isoelectronic sequenceM. P. Das, M. V. Ramana, A. K. RajagopalPhys. Rev. A 22, 91980
Theory of Inhomogeneous Electron Systems: Spin-Density-Functional-FormalismA. K. RajagopalReview Article In ADVANCES IN CHEMICAL PHYSICS (edited by I. Prigogine and S.A. Rice) Vol. 41, 591980
1979
Paper Title Authors Journal Reference Archive Reference Year
Kinetics of an alternating copolymer modelJae Il Lee, Hwe Ik Zhang, A. K. RajagopalPhys. Rev. A 20, 11251979
Perturbative approach to the calculation of the electric field near a metal surfaceA. Bagchi, R. G. Barrera, A. K. RajagopalPhys. Rev. B 20, 48241979
Possibility for High-Temperature SuperconductivityA. K. RajagopalPhys. Rev. B20, 41, 10201979
1978
Paper Title Authors Journal Reference Archive Reference Year
Correlations in two-dimensional electron systems. Magnetic propertiesA. K. Rajagopal, S. P. Singhal, Mahadev Banerjee, J. C. KimballPhys. Rev. B 17, 22621978
Exactly Soluble Model of Interacting Classical Spins in One Dimension with Random InteractionsA. K. RajagopalPhys. Rev. B18, 39, 13951978
Inhomogeneous Relativistic Electron GasA. K. RajagopalJ. Phys. C: Solid State Phys. 11, L9431978
Linear Response Functions in the Spin-Density Functional TheoryA. K. RajagopalPhys. Rev. B17 38, 29801978
Self-consistent screening and approximate residual Landau interaction functions for the electron gasB. Sriram Shastry, Sudhanshu S. Jha, A. K. RajagopalPhys. Rev. B 18, 26161978
Short-ranged correlations and the ferromagnetic electron gasA. K. Rajagopal, J. C. Kimball, Mahadev BanerjeePhys. Rev. B 18, 23391978
1977
Paper Title Authors Journal Reference Archive Reference Year
Correlations in a two-dimensional electron systemA. K. Rajagopal, John C. KimballPhys. Rev. B 15, 28191977
Gradient expansion in the density-functional approach to an inhomogeneous electron system. IIA. K. Rajagopal, S. P. SinghalPhys. Rev. B 16, 6011977
Itinerant Electron Ferromagnetism of a Two Dimensional SystemA. K. RajagopalSolid State Comm. 21, 4831977
Itinerant Electron Magnetism in Two DimensionsA. K. RajagopalProc. Int. Conf. Magnetism, Amsterdam, Sept. 1976, Physica 86-88B, 3371977
Longitudinal and Transverse Dielectric Functions of a Two-Dimensional Electron System-Inclusion of Exchange CorrelationsA. K. RajagopalPhys. Rev. B15 31 42641977
Momentum Dependent Interaction and the Magnetic Properties of Interacting Electron SystemsA. K. RajagopalProc. Itinerant Electron Magnetism Conference,Physica 91B1977
New microscopic approach to the excitations and their interactions in Bose systems with an application to the study of surface excitationsRipplonsA. K. Rajagopal, I. Rama RaoPhys. Rev. B 16, 31481977
Theory of excitations in 3He-4He mixturesJ. Ruvalds, J. Slinkman, A. K. Rajagopal, A. BagchiPhys. Rev. B 16, 20471977
1976
Paper Title Authors Journal Reference Archive Reference Year
Antiparallel spin correlations in a many-electron system: A new approach. IIA. R. P. Rau, A. K. RajagopalPhys. Rev. B 14, 30521976
Bound State of Two Plasmons"J. Ruvalds, A. K. Rajagopal, J. Carballo, G. S. GrestPhys. Rev. Lett. 36, 2741976
Theory of plasmon interactions in an electron gas: Scattering of two plasmonsA. K. Rajagopal, G. S. Grest, J. RuvaldsPhys. Rev. B 14, 671976
1975
Paper Title Authors Journal Reference Archive Reference Year
Antiparallel spin correlations in a many-electron system: A new approachA. R. P. Rau, A. K. RajagopalPhys. Rev. B 11, 36041975
Bogoliubov theory for a many-boson systemG. S. Grest, A. K. RajagopalPhys. Rev. B 12, 48471975
Gradient expansion in the density functional approach to an inhomogeneous electron systemA. K. Rajagopal, S. RayPhys. Rev. B 12, 31291975
Quantum Fluids in Particular Superfluid HeliumA. K. Rajagopal "Three Lectures in the Bose Symposiums on Statistical Physics. Supplement to Journal of Ind. Inst. of Sci. 85"1975
Some Results in the Theory of Interacting Electron SystemsA. K. RajagopalPramana 4, 1401975
1974
Paper Title Authors Journal Reference Archive Reference Year
Elementary excitations in superfluid liquid helium based on the Bogoliubov-Zubarev formalismA. K. Rajagopal, G. S. GrestPhys. Rev. A 10, 18371974
Energy spectrum of H- in a strong magnetic fieldRonald J. W. Henry, R. F. O' Connell, Ed R. Smith, G. Chanmugam, A. K. RajagopalPhys. Rev. D 9, 3291974
Field-theoretic approach to many-boson systemsG. S. Grest, A. K. RajagopalPhys. Rev. A 10, 13951974
Microscopic approach to the theory of roton interactions in superfluid heliumA. K. Rajagopal, A. Bagchi, J. RuvaldsPhys. Rev. A 9, 27071974
New self-consistent quasistatic approximation for screening and plasma dispersion in the electron gasB. Sriram Shastry, Sudhanshu S. Jha, A. K. RajagopalPhys. Rev. B 9, 20001974
Some generalizations of the Marcinkiewicz theorem and its implications to certain approximation schemes in many-particle physicsA. K. Rajagopal, E. C. G. SudarshanPhys. Rev. A 10, 18521974
Spin correlations in a magnetic electron gas. IIA. K. Rajagopal, G. S. GrestPhys. Rev. B 9, 2681974
1973
Paper Title Authors Journal Reference Archive Reference Year
Inhomogeneous Electron GasA. K. Rajagopal, J. CallawayPhys. Rev. B 7, 19121973
Positron Annihilation in the Wigner CrystalA. K. Rajagopal, Chanchal K. MajumdarPhys. Rev. B 8, 23621973
Spin Correlations in a Magnetic Electron GasA. K. Rajagopal, J. Rath, John C. KimballPhys. Rev. B 7, 26571973
Studies in Some Topics of Many Body PhysicsA. K. RajagopalInvited article commemorating the twenty-fifth anniversary of Indian Independence,J. Math. Phys. Sci. (Madras) 7, 891973
Three Problems and Their RelevanceA. K. RajagopalProc. Ind. Acad. Sci. (A) 78, 131973
1972
Paper Title Authors Journal Reference Archive Reference Year
Coulomb T Matrix and the Proton-Hydrogen Charge ExchangeC. S. Shastry, A. K. Rajagopal, J. CallawayPhys. Rev. A 6, 2681972
Energy Spectrum of the Hydrogen Atom in a Strong Magnetic FieldEd R. Smith, Ronald J. W. Henry, G. L. Surmelian, R. F. O'Connell, A. K. RajagopalPhys. Rev. D 6, 37001972
Orbital Susceptibility of an Interacting Electron Gas. IIA. K. Rajagopal, J. RathPhys. Rev. A 6, 12451972
Orbital Susceptibility of an Interaction Electron GasA. K. Rajagopal, K. P. JainPhys. Rev. A 5, 551972
Remarks on the Construction of the Nonrelativistic Coulomb Green's FunctionAugustine C. Chen, Joseph C. Y. Chen, A. K. RajagopalPhys. Rev. A 5, 26861972
Variational Solution of the Vertex Equation and the Dielectric Function of the Interacting Electron GasA. K. RajagopalPhys. Rev. A6, 13, 12391972
1971
Paper Title Authors Journal Reference Archive Reference Year
Faddeev Approach to the Ground State of Three-Particle Coulomb SystemsS. Radhakant, C. S. Shastry, A. K. RajagopalPhys. Rev. A 3, 2341971
High-Temperature Magnetic Susceptibility of Interacting Electrons in a Solid. IIJoseph Callaway, A. K. RajagopalPhys. Rev. B 3, 17631971
Itinerant Electron Ferromagnetism--T Matrix ApproachA. K. RajagopalI1 Nuovo Cim. B1, 481971
Role of Electron-Electron Interactions in Positronium Formation in MetalsA. K. RajagopalProgr. Theor. Phys. 45, 10211971
1970
Paper Title Authors Journal Reference Archive Reference Year
Comments on the Faddeev Approach to Three-Particle Coulomb SystemsC. S. Shastry, A. K. RajagopalPhys. Rev. A 2, 7811970
1969
Paper Title Authors Journal Reference Archive Reference Year
Positronium Formation in HydrogenChanchal K. Majumdar, A. K. RajagopalPhys. Rev. 184, 1441969
1967
Paper Title Authors Journal Reference Archive Reference Year
Ferromagnetism of an Electron GasA. K. Rajagopal, S. D. MahantiPhys. Rev. 158, 3531967
Lidiards Theory of Itinerant-Electron AntiferromagnetismA. K. Rajagopal, Harvey BrooksPhys. Rev. 158, 5521967
Perturbation Theory of the Self-Consistent FieldA. K. RajagopalARPA Tech. Rep. 15 (May 1965) (Harvard University) and Suppl. Nuovo Cim. (I) 5, 7941967
1966
Paper Title Authors Journal Reference Archive Reference Year
de-Haas-van Alphen Oscillations in the Critical Temperature of Type II SuperconductorsA. K. RajagopalPhys. Letters 23, 5391966
Spin Waves in an Interacting Electron GasA. K. RajagopalPhys. Rev. 142, 1521966
The Dielectric Constant of Bloch Electrons in Crossed Electric and Magnetic FieldsA. K. RajagopalI1 Nuovo Cimento (X) 46B, 461966
1965
Paper Title Authors Journal Reference Archive Reference Year
A Note in Plasma Oscillations in a Magnetic FieldA. K. RajagopalI1 Nuovo Cimento (X) 36,2791965
Collective Excitations of SDW SystemsA. K. RajagopalPhys. Rev. 137, A14291965
1964
Paper Title Authors Journal Reference Archive Reference Year
Remarks on Extended Random Phase ApproximationA. K. RajagopalNucl. Phys. 57, 4351964
1963
Paper Title Authors Journal Reference Archive Reference Year
A Note on Plasma Oscillations in a Magnetic FieldA. K. RajagopalPhys. Letts. 5, 401963
Diffraction by a Perfectly Conducting Semi-Infinite Screen in an Anisotropic PlasmaA. K. RajagopalIEEE Trans. Antennas and Propagation AP-11 4971963
1962
Paper Title Authors Journal Reference Archive Reference Year
Closed Shell Ion-Ion Interactions in Calcium FluorideA. K. RajagopalJour. Phys. Chem.. Solids 23, 3181962
Lattice Dynamics of Cubic Perovskite Structures, in Particular SrTi03A. K. RajagopalJourn. Phys. Chem. Solids 23, 6331962
Thermalization of Neutrons in Solids in Doppler ApproximationA. K. RajagopalNucl. Sci. and Eng. 13, 1501962
1961
Paper Title Authors Journal Reference Archive Reference Year
On the Generalized Riccati EquationA. K. RajagopalThe Amer. Math. Monthly 68, 7771961
1960
Paper Title Authors Journal Reference Archive Reference Year
A Note on the Orthogonal PolynomialsA. K. RajagopalCurr. Sci. (India) 29, 131960
Lattice Vibrations and Specific Heat of Zinc BlendeA. K. RajagopalZeit. Phys. 158, 4711960
On Some of the Classical Orthogonal PolynomialsA. K. RajagopalThe Amer. Math. Monthly 67, 1661960
On the Thermomagnetic Effects of Monovalent MetalsA. K. RajagopalProc. Phys. Soc. (London) 75, 4631960
1959
Paper Title Authors Journal Reference Archive Reference Year
A General Transform-Gauss TransformA. K. RajagopalProc. Ind. Acad. Sci. 50A, 1431959
Correction to the Theory of Calcium Fluoride LatticeA. K. RajagopalProc. Phys. Soc. (London) 73, 6871959
On a Certain Differential EquationA. K. RajagopalMathematical Gazette (London) 53, 451959
1958
Paper Title Authors Journal Reference Archive Reference Year
A Curious TriangleA. K. RajagopalMathematical Gazette (London) 42, 40 1958
A Note on Ballabh's paperA. K. RajagopalGanita 9, 51958
A Note on the Generalization of the Hermite PolynomialsA. K. RajagopalProc. Ind. Acad. Sci. 48A, 1451958
A Note on the Unification of the Classical Orthogonal PolynomialsA. K. RajagopalProc. Nat.Inst. Sci. Ind. 24A, 3091958
A QueryA. K. RajagopalMathematical Gazette (London) 42, 2241958
An Extension of the Operator FormulaA. K. RajagopalThe Mathematics Student 26, 1851958
On Bessel PolynomialsA. K. RajagopalBoll, U. Math. Italiana (Bologna) 13, 4181958
On Notes 2023, 2094, 2299A. K. RajagopalMathematical Gazette (London) 42, 431958
Sums of PowersA. K. RajagopalMathematical Gazette (London) 42, 2231958
1957
Paper Title Authors Journal Reference Archive Reference Year
A Direct Derivation of the Equation of the Director Circle of an EllipseA. K. RajagopalMathematics Magazine (California, USA) 301957
Some Algebraic IdentitiesA. K. RajagopalMathematical Gazette (London) 41, 137 1957

Paper Presentations


2011

Paper Title Authors File Link Presented at Year
Opening Remarks QIPA SchoolAttipat RajagopalOpening Remarks QIPA SchoolHRI2011
Role of initial states, open system quantum dynamics, Markovian and non-Markovian avataras,Attipat RajagopalRole of initial states, open system quantum dynamics, Markovian and non-Markovian avataras,HRI2011