Fermionic superradiance in a transversely pumped optical cavity
J. Keeling, M. J. Bhaseen and B. D. Simons
Phys. Rev. Lett. 112, 143002 (2014) |
arxiv abstract | doi:10.1103/PhysRevLett.112.143002
Holographic superfluids and the dynamics of symmetry breaking
M. J. Bhaseen, J. P. Gauntlett, B. D. Simons, J. Sonner and T. Wiseman
Phys. Rev. Lett. 110, 015301 (2013) |
arxiv abstract | doi:10.1103/PhysRevLett.110.015301
Discrete symmetry breaking transitions between paired superfluids
M. J. Bhaseen, S. Ejima, F. H. K. Essler, H. Fehske, M. Hohenadler and B. D. Simons
Phys.
Rev. A 85, 033636 (2012) |
arxiv abstract | doi:10.1103/PhysRevA.85.033636
Dynamics of non-equilibrium Dicke models
M. J. Bhaseen, J. Mayoh, B. D. Simons and J. Keeling
Phys. Rev. A 85, 013817 (2012) |
arxiv abstract | doi:10.1103/PhysRevA.85.013817
Magnetic properties of the second Mott lobe in pairing Hamiltonians
M. J. Bhaseen, S. Ejima, M. Hohenadler, A. O. Silver, F. H. K. Essler, H. Fehske and B. D. Simons
Phys. Rev.
A 84, 023635 (2011) |
arxiv abstract | doi:10.1103/PhysRevA.84.023635
Ising deconfinement transition between Feshbach resonant superfluids
S. Ejima, M. J. Bhaseen, M. Hohenadler, F. H. L. Essler, H. Fehske, and B. D. Simons
Phys. Rev. Lett. 106, 015303 (2011) |
arxiv abstract | doi:10.1103/PhysRevLett.106.015303
Liquid-crystalline phases of ultracold atoms
J. M. J. Keeling, M. J. Bhaseen and B. D. Simons
Physics 3, 88 (2010)
| doi:10.1103/Physics.3.88
Quantum phase transitions in bosonic heteronuclear pairing Hamiltonians
M. Hohenadler, A. O. Silver, M. J. Bhaseen and B. D. Simons
Phys. Rev. A
82, 013639 (2010) |
arxiv abstract | doi:10.1103/PhysRevA.82.013639
Collective dynamics of Bose-Einstein condenates in optical cavities
J. Keeling, M. J. Bhaseen and B. D. Simons
Phys. Rev. Lett.
105, 043001 (2010) |
arxiv abstract | doi:10.1103/PhysRevLett.105.043001
Bose-Hubbard models coupled to cavity light fields
A. O. Silver, M. Hohenadler, M. J. Bhaseen and B. D. Simons
Phys. Rev. A
81, 023617 (2010) |
arxiv abstract | doi:10.1103/PhysRevA.81.023617
Repulsive atomic gas in a harmonic trap on the border of itinerant ferromagnetism
G. Conduit and B. D. Simons
Phys. Rev. Lett.
103 , 200403 (2009) |
arxiv abstract | doi:10.1103/PhysRevLett.103.200403
Feshbach resonance in optical lattices and the quantum Ising model
M. J. Bhaseen, A. O. Silver, M. Hohenadler, and B. D. Simons
Phys. Rev. Lett.
103 , 265302 (2009) |
arxiv abstract | doi:10.1103/PhysRevLett.103.265302
Itinerant ferromagnetism in an atomic Fermi gas: influence of population imbalance
G. J. Conduit and B. D Simons
Phys. Rev. A 79
053606 (2009) |
arxiv abstract | doi:10.1103/PhysRevA.79.053606
Polaritons and pairing phenomena in Bose--Hubbard mixtures
M. J. Bhaseen, M. Hohenadler, A. O. Silver and B. D. Simons
Phys. Rev. Lett.
102 , 135301 (2009) |
arxiv abstract | doi:10.1103/PhysRevLett.102.135301
Probing ultra-cold Fermi atoms with a single ion
Y. Sherkunov, B. Muzykantskii, N. d'Ambrumenil and B. D Simons
Phys. Rev. A 79
023604 (2009) |
arxiv abstract | doi:10.1103/PhysRevA.79.023604
Superfluidity at the BEC-BCS crossover in two-dimensional Fermi gases with population and mass imbalance
G. J. Conduit, P. H. Conlon and B. D Simons
Phys. Rev. A 77,
053617 (2008) |
arxiv abstract | doi:10.1103/PhysRevA.77.053617
Polarized Fermi condensates with unequal masses: Tuning the tricritical point
M. M. Parish, F. M. Marchetti, A. Lamacraft and B. D. Simons
Phys. Rev. Lett.
98, 160402 (2007) |
arxiv abstract | doi:10.1103/PhysRevLett.98.160402
Finite temperature phase diagram of a polarised Fermi condensate
M. M. Parish, F. M. Marchetti, A. Lamacraft and B. D. Simons
Nature Physics 3, 124 (2007) |
arxiv abstract | doi:10.1038/nphys520
Fermion-mediated BCS-BEC crossover in ultracold 40K gases: mean-field
theory and collective modes
J. M. Acton, M. Parish and B. D. Simons
Phys. Rev. A 71,
063606 (2005) | doi:10.1103/PhysRevA.71.063606
Dynamics of the BCS-BEC crossover in a degenerate Fermi gas
M. H. Szymanska, B. D. Simons and K. Burnett
Phys. Rev. Lett.
94, 170402 (2005) |
arxiv abstract | doi:10.1103/PhysRevLett.94.170402
Fermion-mediated BCS-BEC Crossover in Ultracold Potassium-40 Gases
M. M. Parish, B. Mihaila, B. D. Simons and P. B. Littlewood
Phys. Rev. Lett. 94, 240402 (2005) |
arxiv abstract | doi:10.1103/PhysRevLett.94.240402
Graphite intercalation compounds under pressure: A first-principles density functional theory study
G. Csanyi, C. J. Pickard, B. D. Simons and R. J. Needs
Phys. Rev. B 75, 085432 (2007) |
arxiv abstract | doi:10.1103/PhysRevB.75.085432
Transformation of spin information into large electrical signals using carbon nanotubes
L. E. Hueso, J. M. Pruneda, V. Ferrari, G. Burnell, J. P. Valdes-Herrera, B. D. Simons, P. B. Littlewood, E. Artacho, A. Fert and N. D. Mathur
Nature 445, 410 (2007) |
arxiv abstract | doi:10.1038/nature05507
Electronic Structure of the Superconducting Graphite Intercalates
G. Csanyi, P. B. Littlewood, A. H. Nevidomskyy, C. J. Pickard and B. D. Simons
Nature Physics 1, 48 (2005) |
arxiv abstract | doi:10.1038/nphys119
Quantized Adiabatic Charge Transport in Carbon Nanotubes
V. I. Talyanskii, D. Novikov, B. D. Simons and L. S. Levitov
Phys. Rev. Lett. 87, 276802 (2001 | arxiv abstract | doi:10.1103/PhysRevLett.87.276802
Fluctuation and commensurability effect of exciton density wave
S. Yang, L. V. Butov, B. D. Simons, K. L. Campman, and A. C. Gossard
Phys. Rev. B 91, 245302 (2015) |
arxiv
abstract | doi:10.1103/PhysRevB.91.245302
Exciton front propagation in photoexcited GaAs quantum wells
S. Yang, L. V. Butov, L. S. Levitov, B. D. Simons and A. C. Gossard
Phys. Rev. B 81, 115320 (2010) |
arxiv abstract | doi:10.1103/PhysRevB.81.115320
Novel quantum condensates in excitonic matter
P. B. Littlewood, J. M. J. Keeling, B. D. Simons, P. R. Eastham, F. M. Marchetti and M. H. Szymanska
Lectures on the physics of strongly correlated systems XIII, AIP Conference proceedings 1162, 15 (2009) | doi:10.1063/1.3225478
Pattern formation in exciton system near quantum degeneracy
L. S. Levitov, B. D. Simons and L. V. Butov
Solid State Comm. 134, 51 (2005) |
arxiv abstract | doi:10.1016/j.ssc.2004.11.050
Condensation and Lasing of Microcavity Polaritons: Comparison between two Models
F. M. Marchetti, M. H. Szymanska, P. R. Eastham, B. D. Simons and P. B. Littlewood
Solid State Comm. 134, 111 (2005) |
arxiv abstract | doi:10.1016/j.ssc.2004.07.077
Pattern formation as a signature of quantum degeneracy in a cold exciton system
L. S. Levitov, B. D. Simons and L. V. Butov
Phys. Rev. Lett. 94, 013818 (2005) |
arxiv abstract | doi:10.1103/PhysRevLett.94.176404
Models of coherent exciton condensation
P. B. Littlewood, P. R. Eastham, J. M. J. Keeling, F. M. Marchetti, B. D. Simons and M. H. Szymanska
J. Phys.: Condens. Matter 16 , S3597-S3620 (2004) |
arxiv abstract | doi:10.1088/0953-8984/16/35/003
Charge transport and phase transition in exciton rings
L. V. Butov, L. S. Levitov, A. V. Mintsev, B. D. Simons, A. C. Gossard and D. S. Chemla
Phys. Rev. Lett. 92, 117404 (2004) |
arxiv abstract | doi:10.1103/PhysRevLett.92.117404
Condensation of cavity polaritons in a disordered environment
F. M. Marchetti, B. D. Simons and P. B. Littlewood
Phys. Rev. A 68, 013818 (2003) |
arxiv abstract | doi:10.1103/PhysRevA.68.013818
Polariton condensation and lasing in optical microcavities - the decoherence driven crossover
M. H. Szymanska, P. B. Littlewood and B. D. Simons
Phys. Rev. A 68, 013818 (2003) |
arxiv abstract | doi:10.1103/PhysRevA.68.013818
Magnetic analog of the Fulde-Ferrell-Larkin-Ovchinnikov phase in Sr3Ru2O7
A. M. Berridge, S. A. Grigera, B. D. Simons and A. G. Green
Phys. Rev. B 81, 054429 (2010) |
arxiv abstract | doi:10.1103/PhysRevB.81.054429
Theory of quantum paraelectrics and the metaelectric transition
G. J. Conduit and B. D. Simons
Phys. Rev. B 81, 024102 (2010) |
arxiv abstract | doi:10.1103/PhysRevB.81.024102
Inhomogeneous phase formation on the border of itinerant ferromagnetism
G. J. Conduit, A. G. Green and B. D. Simons
Phys. Rev. Lett. 103, 207201 (2009) |
arxiv abstract | doi:10.1103/PhysRevLett.103.207201
Commentary: Viewpoint: There and back again: from magnets to superconductors
Coexistence of SDW, d-wave singlet and staggered pi-triplet superconductivity
A. Aperis, G. Varelogiannis, P. B. Littlewood and B. D. Simons
J. Phys. Condens. Matter 120, 434235 (2008) |
arxiv abstract | doi:10.1088/0953-8984/20/43/434235
Inhomogeneous magnetic phases: a LOFF-like phase in Sr3Ru2O7
A. Berridge, A. G. Green, S. A. Grigera and B. D. Simons
Phys. Rev. Lett. 102, 136404 (2009) |
arxiv abstract | doi:10.1103/PhysRevLett.102.136404
Potential realization: Field tunable spin density wave phases in Sr3Ru2O7
Phase bifurcation and quantum fluctuations in Sr3Ru2O7
A. G. Green, S. A. Grigera, R. A. Borzi, A. P. Mackenzie, R. S. Perry and B. D. Simons
Phys. Rev. Lett. 95, 086402 (2005) |
arxiv abstract | doi:10.1103/PhysRevLett.95.086402
Effects of Disorder on Coexistence and Competition between Superconducting and Insulating States
M. V. Mostovoy, F. M. Marchetti, B. D. Simons and P. B. Littlewood
Phys. Rev. B 71, 224502 (2005) |
arxiv abstract | doi:10.1103/PhysRevB.71.224502
Holes in antiferromagnets: motion and effect on local magnetic structure
J. M. F. Gunn, M. J. Godfrey and B. D. Simons
Int. J. Magnetism 104-107, 465-468 (1992) | doi:10.1016/0304-8853(92)90879-S
Exact eigenstates of the infinite-range t-J model
B. D. Simons
Phys. Rev. B 44, 5137 (1991) | doi:10.1103/PhysRevB.44.5137
Spin dynamics and the delocalisation of hole quasi-particles
J. M. F. Gunn and B. D. Simons
Phys. Rev. B 42, 4370 (1990) | doi:10.1103/PhysRevB.42.4370
The `internal' structure of hole quasi-particles in antiferromagnets
B. D. Simons and J. M. F. Gunn
Phys. Rev. B 41, 7019 (1990) | doi:10.1103/PhysRevB.41.7019
Spin polarons in the t-J model
J. M. F. Gunn and B. D. Simons
Proceedings of the NATO Workshop on Dynamics of Magnetic Fluctuations in High Temperature Superconductors , ed. G. Reiter et. al., Plenum Press, New York p319 (1990) | doi:10.1007/978-1-4684-7490-9_32
"Internal" structure of hole quasi-particles in antiferromagnets
J. M. F. Gunn and B. D. Simons
Physica C 162-164, 1481 (1989) | doi:10.1016/0921-4534(89)90782-X
String polarons
J. M. F. Gunn and B. D. Simons
Physica C 162-164, 1479 (1989) | doi:10.1016/0921-4534(89)90781-8
Pairing of electrons coupled to antiferromagnetic spin waves
B. D. Simons and J. M. F. Gunn
Physica C 153-155, 1273 (1988) | doi:10.1016/0921-4534(88)90277-8
Critical States in Disordered Superconducting Films
A. Lamacraft, F. M. Marchetti, J. S. Meyer, R. S. Moir, and B. D. Simons
J. Phys. A: Math. Gen. Lett. 37 L447 (2004) |
arxiv abstract
Localization from sigma-model geodesics
A. Lamacraft, B. D. Simons, and M. R. Zirnbauer
Phys. Rev. B 70, 013818 (2004) |
arxiv abstract
Phase Coherence Phenomena in Disordered Superconductors
A. Lamacraft and B. D. Simons
Proceedings of the Windsor Summer School on "Strongly Correlated Fermions and Bosons in Low-Dimensional Disordered Systems", eds. I. V. Lerner et al., Klumer (2002) |
(Gzipped Postscript)
Tail States in Disordered Superconductors with Magnetic Impurities: the Unitarity Limit
F. M. Marchetti and B. D. Simons
J. Phys. A: Math. Gen. 35, 4201 (2002) |
arxiv abstract
Phase coherence phenomena in superconducting films
J. S. Meyer and B. D. Simons
Phys. Rev. B 65, 144518 (2002) |
arxiv abstract
Optimal Fluctuations and Tail States of non-Hermitian Operators
F. M. Marchetti and B. D. Simons
J. Phys. A: Math. Gen. 34, 10805 (2001) |
arxiv abstract
Gap Fluctuations in Inhomogeneous Superconductors
J. S. Meyer and B. D. Simons
Phys. Rev. B 64, 134516 (2001) |
arxiv abstract
Superconductors with Magnetic Impurities: Instantons and Sub-gap States
A. Lamacraft and B. D. Simons
Phys. Rev. B 64, 014514 (2001) |
arxiv abstract
Tail States in a Superconductor with Magnetic Impurities
A. Lamacraft and B. D. Simons
Phys. Rev. Lett. 85, 4783 (2000) |
arxiv abstract
Theories of low-energy quasi-particle states in disordered d-wave superconductors
A. Altland, B. D. Simons and M. R. Zirnbauer
Physics Reports 359, 283 (2002) |
arxiv abstract
Theories of mesoscopic physics
B. D. Simons and A. Altland
Lecture course published in the proceedings of the CRM Summer
School entitled "Theoretical Physics at the End of the XXth Century", Banff (CRM Series in Mathematical Physics, Springer, 2000) |
(Gzipped Postscript)
Optimal Fluctuations and Tail States in non-Hermitian Operators
A. Izyumov and B. D. Simons
Phys. Rev. Lett. 83, 4373 (1999) |
arxiv abstract
Effective field theory of the random flux model
A. Altland and B. D. Simons
Nucl. Phys. B 562, 445 (1999) |
arxiv abstract
Classical and quantum dynamics in a random magnetic field
A. V. Izyumov and B. D. Simons
J. Phys. A: Math. Gen. 32 5563 (1999) |
arxiv abstract
Field theory of the random flux model
A. Altland and B. D. Simons
J. Phys. A: Math. Gen. Lett. 32 L353 (1999) |
arxiv abstract
The competition between the zero-bias anomaly and proximity effect in disordered systems
Y. Oreg, P. Brouwer, B. D. Simons, and A. Altland
Phys. Rev. Lett. 82, 1269 (1999) |
arxiv abstract
Field theory of mesoscopic fluctuations in superconducting/normal-metal systems
A. Altland, B. D. Simons and D. Taras-Semchuk
Advances in Phys. 49 , 321 (2000) |
arxiv abstract
Quantum mechanics with random imaginary scalar potential
A. Izyumov and B. D. Simons
Europhys. Lett. 45 , 290 (1999) |
arxiv abstract
Delocalization in coupled one-dimensional chains
P. W. Brouwer, C. Mudry, B. D. Simons, and A. Altland
Phys. Rev. Lett. 81, 862 (1998) |
arxiv abstract
Random Dirac fermions and non-Hermitian quantum mechanics
C. Mudry, B. D. Simons, and A. Altland
Phys. Rev. Lett. 80, 4257 (1998) |
arxiv abstract
Field theory of mesoscopic fluctuations in superconducting/normal-metal systems
A. Altland, D. Taras-Semchuk and B. D. Simons
Pis'ma Zh. Eksp. Teor. Fiz. 67, 21 (1997) [JETP Lett. 67,22 (1998)] |
arxiv abstract
Universality of Parametric Spectral Correlations: Local vs. Extended Perturbing Potentials
F. M. Marchetti, I. E. Smolyarenko, and B. D. Simons
Phys. Rev. E 68, 036217 (2003) |
arxiv abstract
Parametric Spectral Statistics in Unitary Random Matrix Ensembles: From Distribution Functions to Intra-Level Correlations
I. E. Smolyarenko and B. D. Simons
J. Phys. A: Math. Gen. 36, 3551 (2003) |
arxiv abstract
Parametric statistics of individual energy levels in random Hamiltonians
I. E. Smolyarenko and B. D. Simons
Phys. Rev. E 67, 025202(R) (2003) |
arxiv abstract
Parametric spectral correlations in disordered and chaotic structures
I. E. Smolyarenko, F. M. Marchetti, and B. D. Simons
Phys. Rev. Lett. 88, 256808 (2002) |
arxiv abstract
Field Theory of Euclidean Matrix Ensembles
C. R. Offer and B. D. Simons
J. Phys. A: Math. Gen. 33, 7567 (2000) |
(Gzipped Postscript)
Calculation of relaxation rates from microscopic equations of motion
R. Haydock, C. M. Nex, and B. D. Simons
Phys. Rev. E 59, 5292 (1999)
Irreversible classical dynamics and quantum chaos
B. D. Simons
Physica A 263, 148 (1999)
Universal adiabatic curvature distribution in disordered and chaotic structures
A. Steuwer and B. D. Simons
Phys. Rev. B 57, 9186 (1998)
Quantum chaos: lessons from disordered metals
A. Altland, C. R. Offer and B. D. Simons
Lecture course in proceedings of the 1997 Summer School "Disordered Systems and Quantum Chaos" held at the Issac Newton Institute in Cambridge, Nato ASI, ed. I. V. Lerner (Gzipped Postscript)
Quantum chaos: a field theory approach
O. Agam, A. V. Andreev and B. D. Simons
Chaos, Fractals and Noise 8, 1099 (1997)
Time-reversal symmetry breaking and the field theory of quantum chaos
B. D. Simons, O. Agam and A. V. Andreev
J. Math. Phys. 38, 1982 (1997)
Semiclassical field theory approach to quantum chaos
A. V. Andreev, B. D. Simons, O. Agam, and B. L. Altshuler
Nucl. Phys. B 482, 536 (1996) |
arxiv abstract
Energy level correlations in disordered metals: beyond universality
A. V. Andreev, B. D. Simons and B. L. Althsuler
J. Math. Phys. 37, 4968 (1996)
Quantum chaos, irreversible dynamics and random matrix theory
A. V. Andreev, O. Agam, B. D. Simons, and B. L. Altshuler
Phys. Rev. Lett. 76, 3947 (1996); (comment) 79, 1779 (1997) |
arxiv abstract
Spectral correlation and response functions in quantum dots
N. Taniguchi, B. D. Simons and B. L. Altshuler
Phys. Rev. B (Rapid Comm.) 53, 7618 (1996) | arxiv abstract
Universality in quantum chaos
B. D. Simons
Nucl. Phys. B (Proc. Suppl.) 45A , 3 (1996), proceedings of the
conference on "Recent Developments in Statistical Mechanics and Quantum
Field Theory" at the ICTP, Trieste, eds. G. Mussardo, S. Randjbar-Daemi and
H. Saleur
Chaos in quantum dots
B. L. Altshuler, N. Taniguchi and B. D. Simons
Surf. Sci. 362 , 687 (1996)
Correlators of spectral determinants in quantum chaos
A. V. Andreev and B. D. Simons
Phys. Rev. Lett. 75, 2304 (1995)
Sensitivity of quantum chaotic wavefunction intensities to changes in external perturbations
E. R. Mucciolo, B. D. Simons, A. V. Andreev, and V. N. Prigodin
Phys. Rev. Lett. 75, 1360 (1995) |
arxiv abstract
Supersymmetry applied to the spectrum edge of random matrix ensembles
A. V. Andreev, B. D. Simons and N. Taniguchi
Nucl. Phys. B 432, 487 (1995)
Universalities: from Anderson localization to quantum chaos
B. D. Simons and B. L. Altshuler
A course of 10 lectures in the proceedings of the 1994 Summer Session LXI on "Mesoscopic Quantum Physics" at Les
Houches, Nato ASI, eds. E. Akkermans, G. Montambaux, J. -L. Pichard and J. Zinn-Justin (Gzipped Postscript)
Crossover driven by time-reversal symmetry breaking in quantum chaos
N. Taniguchi, A. Hashimoto, B. D. Simons, and B. L. Altshuler
Europhys. Lett. 27, 335 (1994) | arxiv abstract
Exact ground state of an open S=1/2 long-ranged Heisenberg antiferromegnetic spin chain
B. D. Simons and B. L. Altshuler
Phys. Rev. B 50, 1102 (1994)
Exact dynamical correlations of the 1/r^2 model
E. R. Mucciolo, B. S. Shastry, B. D. Simons, and B. L. Altshuler
Phys. Rev. B 49, 15197 (1994) | arxiv abstract
Matrix models, one-dimensional fermions, and quantum chaos
B. D. Simons, P. A. Lee and B. L. Altshuler
Phys. Rev. Lett. 72, 64 (1994)
Quantum chaos: energy levels as fermions
B. D. Simons, P. A. Lee and B. L. Altshuler
Proceedings of the workshop on "Coulomb and Interference Effects in Small Electronic Structures", XXIXth Rencontre de Moriond, Villars, Switzerland, 1994
Exact results for quantum chaotic systems and one-dimensional fermions from matrix models
B. D. Simons, P. A. Lee and B. L. Altshuler
Nucl. Phys. B 409, 487 (1993)
New class of universal correlations in the spectra of hydrogen in a magnetic field
B. D. Simons, A. Hashimoto, M. Courtney, D. Kleppner and B. L. Altshuler
Phys. Rev. Lett. 71, 2899 (1993)
Exact pair correlation of the
one-dimensional quantum gas with inverse square repulsion derived from
the symplectic Dyson ensemble
B. D. Simons, P. A. Lee and B. L. Altshuler
Phys. Rev. B 48, 11450 (1993)
Universality in the many-particle spectra of strongly correlated systems
M. Faas, B. D. Simons, X. Zotos and B. L. Altshuler
Phys. Rev. B 48, 5439 (1993)
Universal correlations in disordered and chaotic systems
B. D. Simons and B. L. Altshuler
Phys. Rev. B 48, 5422 (1993)
Exact description of spectral correlations by a one-dimensional Hamiltonian with inverse square interaction
B. D. Simons, P. A. Lee and B. L. Altshuler
Phys. Rev. Lett. 70, 4122 (1993)
Universal velocity correlations in disordered and chaotic systems
B. D. Simons and B. L. Altshuler
Phys. Rev. Lett. 70, 4063 (1993)
Universality in quantum chaotic spectra
B. D. Simons, A. Szafer and B. L. Altshuler
Pis'ma Zh. Eksp. Teor. Fiz. 57, 268 (1993) [JETP Lett. 57, 276 (1993)]
Universality in the spectra of quantum chaotic systems
B. D. Simons and B. L. Altshuler
Proceedings of the Indo-US workshop on "Ordering Disorder: Prospect and Retrospect in Condensed Matter Physics", Hyderabad, India 1992-93 Ed. V. Srivastava, A. K. Bhatnager, D. G. Naugle (AIP Press, New York)