Reflection equations and surface critical phenomenaA brief review is given of recent developments in the study of surface critical phenomena from the viewpoint of exactly solved lattice models. These developments include exact results for the polymer…M. T. Batchelor·Aug 16, 1996SaveLearn
Exact shape of the lowest Landau level in a double--layer system and a superlattice with uncorrelated disorderWe extend Wegner's exact solution for the 2D density of states at the lowest Landau level with a short--range disorder to the cases of a double--layer system and a superlattice. For the…T. V. Shahbazyan, M. E. Raikh·Aug 15, 1996SaveLearn
Universal Correlations of Coulomb Blockade Conductance Peaks and the Rotation Scaling in Quantum DotsWe show that the parametric correlations of the conductance peak amplitudes of a chaotic or weakly disordered quantum dot in the Coulomb blockade regime become universal upon an appropriate scaling…Y. Alhassid, H. Attias·Aug 15, 1996SaveLearn
Moment Approach for the 2D Attractive Hubbard ModelWe constructed the one-particle spectral functions (diagonal and off-diagonal) which reproduce BCS for weak coupling and which take into account the effect of correlations on superconductivity in the…J. J. Rodríguez-Núñez, C. E. Cordeiro, A. Delfino·Aug 14, 1996SaveLearn
Mean-Field and Perturbation Theory of Vortex-like Composite FermionsWe develop a field theory for a partially filled Landau level based on composite fermions with a finite vortex core, whose mean-field states are exactly those described by well-tested trial wave…Yong-Shi Wu, Yue Yu·Aug 14, 1996SaveLearn
Stability of Relativistic Matter via Thomas-Fermi TheoryA Thomas-Fermi-Weizsaecker type theory is constructed, by means of which we are able to give a relatively simple proof of the stability of relativistic matter. Our procedure has the advantage over…E. H. Lieb, M. Loss, H. Siedentop·Aug 14, 1996SaveLearn
Edge Tunneling of Vortices in Superconducting Thin FilmsWe investigate the phenomenon of the decay of a supercurrent due to the zero-temperature quantum tunneling of vortices from the edge in a thin superconducting film in the absence of an external…Roberto Iengo, Giancarlo Jug·Aug 13, 1996SaveLearn
Antiresonance and Localization in Quantum DynamicsThe phenomenon of quantum antiresonance (QAR), i.e., exactly periodic recurrences in quantum dynamics, is studied in a large class of nonintegrable systems, the modulated kicked rotors (MKRs). It is…I. Dana, E. Eisenberg, N. Shnerb·Aug 13, 1996SaveLearn
A microscopic theory of skyrmion excitations in the fractional quantum Hall systemWe present a microscopic theory of skyrmion and antiskyrmion excitations in fractional quantum Hall systems, and calculate in an analytical fashion their excitation energies. From the calculated net…Kang-Hun Ahn, K. J. Chang·Aug 13, 1996SaveLearn
Boltzmann and Statistical MechanicsLecture given at the International Meeting ``Boltzmann's Legacy - 150 Years after his Birth'', organized by the Accademia Nazionale dei Lincei, 25 - 28 May 1994, in Rome, to be published…E. G. D. Cohen·Aug 12, 1996SaveLearn
Coulomb Gaps in One-Dimensional Spin-Polarized Electron SystemsWe investigate the density of states (DOS) near the Fermi energy of one-dimensional spin-polarized electron systems in the quantum regime where the localization length is comparable to or larger than…Gun Sang Jeon, M. Y. Choi, S. -R. Eric Yang·Aug 12, 1996SaveLearn
Statics and dynamics of charge fluctuations in the t-J modelThe equation for the charge vertex γ of the t-J model is derived and solved in leading order of an 1/N expansion, working directly in terms of Hubbard operators. Various quantities which depend…Roland Zeyher, Miodrag L. Kulic·Aug 12, 1996SaveLearn
Self-Consistent Strong-Coupling-Perturbation Theory for the Anderson Model, Based on Wicks TheoremA strong-coupling-perturbation theory around the Atomic Limit of the Anderson model with large U for a localized f-orbital coupled to a conduction-electron band is presented. Although an…Jan Brinckmann·Aug 12, 1996SaveLearn
Gauge invariance of the beta-function in nonrelativistic quantum electrodynamicsRecently there has been much interest in gauge theories applied to condensed matter physics. I show that for a system of nonrelativistic electrons coupled to a U(1) gauge field in the presence of a…Olav F. Syljuasen·Aug 10, 1996SaveLearn
The von Karman equations, the stress function, and elastic ridges in high dimensionsThe elastic energy functional of a thin elastic rod or sheet is generalized to the case of an M-dimensional manifold in N-dimensional space. We derive potentials for the stress field and curvatures…Eric M. Kramer·Aug 9, 1996SaveLearn
Chiral Metal as a Ferromagnetic Super Spin ChainThe electrons on the surface of a disordered multi-layer integer quantum Hall system constitute an unusual chiral metal with ballistic motion transverse to the field, and diffusive motion parallel to…Leon Balents, Matthew P. A. Fisher, Martin R. Zirnbauer·Aug 9, 1996SaveLearn
Coexistence of, and Competition between, Superconductivity and Charge-Stripe Order in La(1.6-x)Nd(0.4)Sr(x)CuO(4)Previously we have presented evidence for stripe order of holes and spins in La(1.6-x)Nd(0.4)Sr(x)CuO(4) with x=0.12. Here we show, via neutron diffraction measurements of magnetic scattering, that…J. M. Tranquada, J. D. Axe, N. Ichikawa et al.·Aug 9, 1996SaveLearn
A simple expression for the cold compression curveThe aim of this contribution is to present expressions for the bulk modulus of a material and its pressure derivative,obtained by using the semiclassical theory of dense matter proposed by P.Savic…V. Celebonovic·Aug 9, 1996SaveLearn
Neutron Scattering Studies of Heavy Fermion SystemsWe review the results of recent studies of the elastic and inelastic neutron scattering from a variety of heavy fermion compounds. This class of materials exhibits a rich variety of ground states:…T. E. Mason, G. Aeppli·Aug 8, 1996SaveLearn
Is the Hofstadter energy spectrum observable in far-infrared absorption?The far-infrared absorption of a periodically modulated two-dimensional electron gas in a perpendicular constant magnetic field is calculated self-consistently within the Hartree approximation. For…Vidar Gudmundsson, Rolf R. Gerhardts·Aug 8, 1996SaveLearn
Supersolid phase in fully frustrated Josephson junction arraysWe study the phase diagram and the excitation spectra of an array of small Josephson junctions at f=1/2 and arbitrary charge frustration. We find that the supersolid region in the phase diagram is…Luigi Amico, Giuseppe Falci, Rosario Fazio et al.·Aug 8, 1996SaveLearn
A critical assessment of the Self-Interaction Corrected Local Density Functional method and its algorithmic implementationWe calculate the electronic structure of several atoms and small molecules by direct minimization of the Self-Interaction Corrected Local Density Approximation (SIC-LDA) functional. To do this we…S. Goedecker, C. J. Umrigar·Aug 8, 1996SaveLearn
Spectral flow in the supersymmetric t-J model with a 1/r2 interactionThe spectral flow in the supersymmetric t-J model with 1/r2 interaction is studied by analyzing the exact spectrum with twisted boundary conditions. The spectral flows for the charge and…T. Fukui, N. Kawakami·Aug 8, 1996SaveLearn
Magnetoresistance and magnetic breakdown in the quasi-two-dimensional conductors (BEDT-TTF)2MHg(SCN)4[M=K,Rb,Tl]The magnetic field dependence of the resistance of (BEDT-TTF)2MHg(SCN)4[M=K,Rb,Tl] in the density-wave phase is explained in terms of a simple model involving magnetic breakdown and a…Ross H. McKenzie, G. J. Athas, J. S. Brooks et al.·Aug 8, 1996SaveLearn
Single-Electron Charging and Coulomb Interaction in InAs Self-Assembled Quantum Dot ArraysSequential single-electron charging is observed in InAs Self-Assembled Quantum Dots using capacitance spectroscopy. In this system, the Coulomb energy is smaller than the inter-level energy spacings…G. Medeiros-Ribeiro, F. G. Pikus, P. M. Petroff et al.·Aug 7, 1996SaveLearn