id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
|---|---|---|---|---|---|---|
cond-mat/9409057 | Long-time traces of the initial condition in relaxation phenomena near
criticality | The time evolution of systems relaxing towards thermal equilibrium is
examined near the critical temperature $T_c$, with special attention paid to
the role of the initial value $m_i$ of the order parameter $\phi$. To this end,
the $n$-component model A for a cube of length $L$ is investigated. The common
belief that al... | 1994-09-14 | 2009-10-22 | [
"cond-mat"
] | U. Ritschel and H. W. Diehl |
cond-mat/9409058 | Monte Carlo Simulation of Universal Short-Time Behavior in Critical
Relaxation | The time evolution of the three-dimensional critical Ising model relaxing
from a nonequilibrium initial state is studied by means of Monte Carlo
simulation. We observe the characteristic initial increase of the (spatially)
averaged magnetization predicted by Janssen et al. The exponent theta' that
governs the initial b... | 1994-09-14 | 2009-10-22 | [
"cond-mat"
] | Z.-B. Li, U. Ritschel, and B. Zheng |
cond-mat/9409053 | Improved Mean-Field Scheme for the Hubbard Model | Ground state energies and on-site density-density correlations are calculated
for the 1-D Hubbard model using a linear combination of the Hubbard projection
operators. The mean-field coefficients in the resulting linearized Equations of
Motion (EOM) depend on both one-particle static expectation values as well as
stati... | 1994-09-13 | 2009-10-22 | [
"cond-mat"
] | J. C. Hicks and J. Tinka Gammel |
cond-mat/9409049 | Chiral and Spin Order in the 2D \pm J Xy Spin Glass : Domain Wall
Scaling Analysis | This is an analytic study of the two-dimensional XY spin glass with $\pm J$
disorder. The Hamiltonian has a continuous spin symmetry and a discrete chiral
symmetry, and therefore possesses, potentially, two different order parameters
and correlation lengths. The cost of breaking the symmetries is probed by
comparing th... | 1994-09-13 | 2009-10-22 | [
"cond-mat"
] | M. Ney-Nifle and H.J. Hilhorst |
cond-mat/9409051 | Mesoscopic quantum transport: Resonant tunneling in the presence of
strong Coulomb interaction | Coulomb blockade phenomena and quantum fluctuations are studied in mesoscopic
metallic tunnel junctions with high charging energies. If the resistance of the
barriers is large compared to the quantum resistance, transport can be
described by sequential tunneling. Here we study the influence of quantum
fluctuations. The... | 1994-09-13 | 2009-10-22 | [
"cond-mat"
] | Herbert Schoeller and Gerd Schoen |
cond-mat/9409050 | Block diagonalizing ultrametric matrices | The problem of diagonalizing a class of complicated matrices, to be called
ultrametric matrices, is investigated. These matrices appear at various stages
in the description of disordered systems with many equilibrium phases by the
technique of replica symmetry breaking. The residual symmetry, remaining after
the breaki... | 1994-09-13 | 2009-10-22 | [
"cond-mat"
] | T. Temesvari, C De Dominicis and I. Kondor |
cond-mat/9409052 | Excitation Spectrum and Collective Modes of Composite Fermions | According to the composite fermion theory, the interacting electron system at
filling factor $\nu$ is equivalent to the non-interacting composite fermion
system at $\nu^*=\nu/(1-2m\nu)$, which in turn is related to the
non-interacting electron system at $\nu^*$. We show that several eigenstates of
non-interacting elect... | 1994-09-13 | 2016-08-31 | [
"cond-mat"
] | X.G. Wu and J.K. Jain |
cond-mat/9409044 | Quasi-Particles in Two-Dimensional Hubbard Model: Splitting of Spectral
Weight | It is shown that the energy $(\varepsilon)$ and momentum $(k)$ dependences of
the electron self-energy function $ \Sigma (k, \varepsilon + i0) \equiv
\Sigma^{R}(k, \varepsilon) $ are, $ {\rm Im} \Sigma^{R} (k, \varepsilon) =
-a\varepsilon^{2}|\varepsilon - \xi_{k}|^{- \gamma (k)} $ where $a$ is some
constant, $\xi_{k} ... | 1994-09-12 | 2009-10-22 | [
"cond-mat"
] | Hidetoshi Fukuyama and Masao Ogata |
cond-mat/9409046 | Vortices and sound waves in superfluids | We consider the dynamics of vortex strings and sound waves in superfluids in
the phenomenological Landau-Ginzburg equation. We first derive the vortex
equation where the velocity of a vortex is determined by the average fluid
velocity and the density gradient near the vortex. We then derive the effective
action for vor... | 1994-09-12 | 2007-05-23 | [
"cond-mat"
] | Kimyeong Lee |
cond-mat/9409043 | Algebraic Scaling of the Kondo Temperature in a Luttinger Liquid | I show here how the algebraic scaling of the Kondo temperature in a Luttinger
liquid can be understood simply from the condition for the existence of the
singlet (or triplet) bound state. | 1994-09-12 | 2007-05-23 | [
"cond-mat"
] | Philip Phillips |
cond-mat/9409048 | Solution of the two-impurity Kondo model: critical point, Fermi-liquid
phase, and crossover | An asymptotically exact solution is presented for the two-impurity Kondo
model for a finite region of the parameter space surrounding the critical
point. This region is located in the most interesting intermediate regime where
RKKY interaction is comparable to the Kondo temperature.
After several exact simplification... | 1994-09-12 | 2009-10-22 | [
"cond-mat"
] | Junwu Gan |
cond-mat/9409045 | Proportion of Unaffected Sites in a Reaction-Diffusion Process | We consider the probability $P(t)$ that a given site remains unvisited by any
of a set of random walkers in $d$ dimensions undergoing the reaction $A+A\to0$
when they meet. We find that asymptotically $P(t)\sim t^{-\theta}$ with a
universal exponent $\theta=\ffrac12-O(\epsilon)$ for $d=2-\epsilon$, while, for
$d>2$, $\... | 1994-09-12 | 2009-10-22 | [
"cond-mat"
] | John Cardy |
cond-mat/9409047 | Quantum Properties of an Andreev Phase Gradiometer | A new class of nano-structure devices is suggested, based on interference
from the order parameter phase gradient of a single superconductor (S) in
contact with a single normal metallic lead (N). By solving the Bogoliubov - de
Gennes equation in two dimensions, it is demonstrated that the electrical
conductance of a no... | 1994-09-12 | 2019-08-15 | [
"cond-mat"
] | P Cook, V C Hui and C J Lambert |
cond-mat/9409042 | The Nature and Validity of the RKKY limit of exchange coupling in
magnetic trilayers | The effects on the exchange coupling in magnetic trilayers due to the
presence of a spin-independent potential well are investigated. It is shown
that within the RKKY theory no bias nor extra periods of oscillation associated
with the depth of the well are found, contrary to what has been claimed in
recent works. The r... | 1994-09-10 | 2009-10-22 | [
"cond-mat"
] | M. S. Ferreira, R. B. Muniz, J. d'Albuquerque e Castro and D. M.
Edwards |
cond-mat/9409040 | On the Nature of the Gaussian Approximations in Phase Ordering Kinetics
s | The structure of the gaussian auxiliary field approximation in the theory of
phase ordering kinetics is analysed with the aim of placing the method within
the context of a systematic theory. While we are unable to do this for systems
with a scalar order parameter, where the approximation remains uncontrolled, a
systema... | 1994-09-09 | 2016-08-31 | [
"cond-mat"
] | De Siena and M. Zannetti |
cond-mat/9409037 | Scaling Regimes, Crossovers, and Lattice Corrections in 2D Heisenberg
Antiferromagnets | We study scaling behavior in 2D, S=1/2 and S=1 Heisenberg antiferromagnets
using the data on full q-dependences of the equal time structure factor and the
static susceptibility, calculated through high temperature expansions. We also
carry out comparisons with a model of two coupled S=1/2 planes with the
interlayer cou... | 1994-09-09 | 2009-10-22 | [
"cond-mat"
] | N. Elstner, R. L. Glenister, R. R. P. Singh and A. Sokol |
cond-mat/9409038 | Enhancement of Persistent Currents by the Coulomb Interaction | The persistent current in three-dimensional mesoscopic rings is investigated
numerically. The model is tight-binding one with random site-energies and
interaction between electrons. The Hartree-Fock approximation is adopted for
the interaction between electrons, and models with up to $3\times 4\times 40$
sites are inve... | 1994-09-09 | 2007-05-23 | [
"cond-mat"
] | D. Yoshioka and H. Kato |
cond-mat/9409039 | An Exactly Solvable Model of Fermions with Disorder | Non-perturbative results are obtained for multipoint correlation functions of
the model of (2 + 1)-dimensional relativistic fermions in a random static
non-Abelian gauge potential. The results indicate that the replica symmetry
remains unbroken. We calculate the diffuson propagator and show that
DC-conductivity for thi... | 1994-09-09 | 2009-10-22 | [
"cond-mat"
] | A. M. Tsvelik |
cond-mat/9409041 | The Inhibition of Mixing in Chaotic Quantum Dynamics | We study the quantum chaotic dynamics of an initially well-localized wave
packet in a cosine potential perturbed by an external time-dependent force. For
our choice of initial condition and with $\hbar$ small but finite, we find that
the wave packet behaves classically (meaning that the quantum behavior is
indistinguis... | 1994-09-09 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | B. S. Helmkamp and D. A. Browne |
cond-mat/9409031 | Exact Solution of the Sutherland Model with arbitrary symmetry | An elementary theory is presented for solving the Sutherland model with
arbitrary internal symmetry such as SU($\nu$) or a supersymmetry SU($\nu,
\mu$). The ground state wave function and all the energy levels are derived.
One starts with solving a variant of the model with distinguishable particles,
and then (anti)sym... | 1994-09-08 | 2009-10-22 | [
"cond-mat"
] | Yusuke Kato and Yoshio Kuramoto |
cond-mat/9409034 | Theory of Second Order Optical Processes from A Luttinger Liquid | We develop a theory for the total optical secondary emission from a 1D
interacting electron system modelled as a Tomonaga-Luttinger liquid. We
separate the emission into two parts which may originate in {\em hot
luminescence} (HL) and {\em Raman Scattering} (RS) respectively when we neglect
the {\em interference} effec... | 1994-09-08 | 2009-10-22 | [
"cond-mat"
] | Jun Zang, Joseph L Birman and Zhao-Bin Su |
cond-mat/9409032 | Numerical Studies of the Two Dimensional XY Model with Symmetry Breaking
Fields | We present results of numerical studies of the two dimensional XY model with
four and eight fold symmetry breaking fields. This model has recently been
shown to describe hydrogen induced reconstruction on the W(100) surface. Based
on mean-field and renormalization group arguments,we first show how the
interplay between... | 1994-09-08 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | T. Ala-Nissila, E. Granato, K. Kankaala, J. M. Kosterlitz, and S.-C.
Ying |
cond-mat/9409036 | Developments in the Theory of the Quantum Hall Effect, Proceedings of
the 1994 Vancouver Semiconductor Conference | The past few years have produced major advances in our understanding of the
quantum Hall effects---quantized and unquantized. Theories based on a
mathematical transformation, where the electrons are replaced by a set of
fermions interacting with a Chern-Simons gauge field, have been useful for
explaining and predicting... | 1994-09-08 | 2007-05-23 | [
"cond-mat"
] | Bertrand I. Halperin |
cond-mat/9409033 | Electron Localization in a 2D System with Random Magnetic Flux | Using a finite-size scaling method, we calculate the localization properties
of a disordered two-dimensional electron system in the presence of a random
magnetic field. Below a critical energy $E_c$ all states are localized and the
localization length $\xi$ diverges when the Fermi energy approaches the
critical energy,... | 1994-09-08 | 2009-10-22 | [
"cond-mat"
] | D.Z. Liu, X.C. Xie, S. Das Sarma and S.C. Zhang |
cond-mat/9409035 | Composite Fermions in Quantum Dots | We demonstrate the formation of composite fermions in two-dimensional quantum
dots under high magnetic fields. The composite fermion interpretation provides
a simple way to understand several qualitative and quantitative features of the
numerical results obtained earlier in exact diagonalization studies. In
particular,... | 1994-09-08 | 2009-10-22 | [
"cond-mat"
] | J.K. Jain and T. Kawamura |
cond-mat/9409025 | Generalized Laughlin Wave Functions Including the Effect of Coulomb
Interaction | We present improved wave functions for the ground state, Laughlin quasihole
and quasiparticle excitations of the fractional quantum Hall effect. These
depend explicitly on the effective strength of Coulomb interaction and
reproduce Laughlin's original result in the limit of no Coulomb interaction. | 1994-09-07 | 2009-10-22 | [
"cond-mat"
] | O.J. Kwon(KongJu Ed.U), B.-H. Lee, and S.-J. Sin (Hanyang U.) |
cond-mat/9409026 | Diamagnetic Response due to Localization in Chains of Connected
Mesoscopic Rings | A dynamic response to a magnetic field of a chain of connected mesoscopic
rings is considered. We show that the low frequency behavior corresponds to
localization of the elctrons along the chain and to diamagnetic dynamic
currents inside rings. The magnetization density due to these currents does not
vanish even in the... | 1994-09-07 | 2009-10-22 | [
"cond-mat"
] | S. Kettemann and K. B. Efetov |
cond-mat/9409028 | Impurity scattering and transport of fractional Quantum Hall edge state | We study the effects of impurity scattering on the low energy edge state
dynamic s for a broad class of quantum Hall fluids at filling factor $\nu
=n/(np+1)$, for integer $n$ and even integer $p$. When $p$ is positive all $n$
of the edge modes are expected to move in the same direction, whereas for
negative $p$ one mod... | 1994-09-07 | 2009-10-22 | [
"cond-mat"
] | C.L. Kane and M.P.A. Fisher |
cond-mat/9409024 | Supersymmetry in quantum chaos and mesoscopic physics | A brief review of the supersymmetry method and its application to mesoscopic
physics and quantum chaos is given. Alghough a non-linear supermatrix $% \sigma
$-model in this approach was derived from models with random potential, it is
emphasized that the zero-dimensional version of the $\sigma $-model is
equivalent to ... | 1994-09-07 | 2015-06-25 | [
"cond-mat"
] | Konstantin Efetov |
cond-mat/9409027 | Capacitance and Transport through an Isolated Impurity Center in 1D
Luttinger Liquid | We establish the equivalence between the problem of a solitary potential
scatterer in a Luttinger liquid of spinless repulsive fermions and an
anisotropic Kondo model where the value of the impurity spin id determined by
the scaling dimension of the scattering potential. The Bethe ansatz is used to
derive non-perturbat... | 1994-09-07 | 2008-02-03 | [
"cond-mat"
] | A. M. Tsvelik |
cond-mat/9409030 | Gauge invariance and wave packet simulations in the presence of dipole
fields | A method for performing wave packet simulations in dipole fields is
presented. Starting from a Hamiltonian with non commuting terms, a gauge
transformation leads to a new Hamiltonian which allows to calculate explicitly
the evolution operator. In this new gauge, the dipole field is fully included
in the {\it vector} po... | 1994-09-07 | 2009-10-22 | [
"cond-mat"
] | Thierry Martin |
cond-mat/9409029 | Switching Nano-Device based on Rabi Oscillations | We consider a potential landscape composed of a well region separated from a
"free" region by a barrier, such that one bound state and one quasi level exist
in the well. A particle initially in the ground state can be activated to the
quasi level by application of a micro wave field, and subsequently tunnel in
the free... | 1994-09-07 | 2009-10-22 | [
"cond-mat"
] | Thierry Martin and Gennady Berman |
cond-mat/9409023 | Burgers Turbulence and Interface Growth III. Similarity Functional
Solution of Hopf Equation. the Case of Random Gaussian Forcing | For the problem of Burgers turbulence with random gaussian forcing a
similarity functional solution of Hopf equation is presented and compared with
scaling arguments and replica Bethe-anzatz treatments. The corresponding field
theory is almost non-anomalous. In one dimension the local fluctuations develop
self-similar ... | 1994-09-06 | 2007-05-23 | [
"cond-mat"
] | Sergei E. Esipov |
cond-mat/9409019 | Rezayi and Read Reply | Reply to comment by Jain, Cond-mat 9409012 published in the Physical Review
Letters, Number 73, 1052 (1994). | 1994-09-06 | 2009-10-22 | [
"cond-mat"
] | E. Rezayi and N. Read |
cond-mat/9409022 | Recurrences in Driven Quantum Systems | We consider an initially bound quantum particle subject to an external
time-dependent field. When the external field is large, the particle shows a
tendency to repeatedly return to its initial state, irrespective of whether the
frequency of the field is sufficient for escape from the well. These
recurrences, which are ... | 1994-09-06 | 2009-10-22 | [
"cond-mat"
] | V. Poduri, D. A. Browne and U. Patil |
cond-mat/9409021 | Dynamics of Particle Deposition on a Disordered Substrate: I. Near-
Equilibrium Behavior | A growth model which describes the deposition of particles (or the growth of
a rigid crystal) on a disordered substrate is investigated. The dynamic
renormalization group is applied to the stochastic growth equation using the
Martin, Sigga, and Rose formalism. The periodic potential and the quenched
disorder, upon aver... | 1994-09-06 | 2009-10-22 | [
"cond-mat"
] | Yan-Chr Tsai and Yonathan Shapir |
cond-mat/9409020 | Fractional quantum Hall effect in higher Landau levels | We investigate, using finite size numerical calculations, the spin-polarized
fractional quantum Hall effect (FQHE) in the first excited Landau level (LL).
We find evidence for the existence of an incompressible state at $\nu =
\frac{7}{3} = 2+\frac{1}{3}$, but not at $\nu = 2+\frac{2}{5}$. Surprisingly,
the 7/3 state i... | 1994-09-06 | 2009-10-22 | [
"cond-mat"
] | Lotfi Belkhir and J. K. Jain |
cond-mat/9409014 | A simple approach to the correlation of rotovibrational states in
four-atomic molecules | The problem of correlation between quantum states of four-atomic molecules in
different geometrical configurations is reviewed in detail. A general, still
simple rule is obtained which allows one to correlate states of a linear
four-atomic molecule with those of any kind of non-linear four-atomic molecule. | 1994-09-06 | 2009-10-22 | [
"cond-mat"
] | N.Manini and S.Oss |
cond-mat/9409016 | Bosonization on the lattice: the emergence of the higher harmonics | A general and transparent procedure to bosonize fermions placed on a lattice
is presented. Harmonics higher than $k_F$ are shown to appear in the
one-paticle Green function, due to the compact character of real electron
bands. Quantitative estimations of the role of these higher harmonics are made
possible by the boson... | 1994-09-06 | 2016-08-16 | [
"cond-mat",
"hep-th"
] | Jaime Ferrer, J. Gonz\'alez and M.-A. Mart\'in-Delgado |
cond-mat/9409013 | Novel Phases and Finite-Size Scaling in Two-Species Asymmetric Diffusive
Processes | We study a stochastic lattice gas of particles undergoing asymmetric
diffusion in two dimensions. Transitions between a low-density uniform phase
and high-density non-uniform phases characterized by localized or extended
structure are found. We develop a mean-field theory which relates
coarse-grained parameters to micr... | 1994-09-06 | 2009-10-22 | [
"cond-mat",
"adap-org",
"nlin.AO"
] | Kwan-tai Leung |
cond-mat/9409018 | Ginzburg-Landau Expansion and Physical Properties of Odd-Gap
Superconductors | Ginzburg-Landau expansion is derived for superconductors with the
gap-function odd over $k-k_{F}$. It is shown that in this odd-gap case
Ginzburg-Landau coefficients possess an additional dependence on the pairing
coupling constant which leads to the appropriate dependence of the physical
properties. Non-magnetic impur... | 1994-09-06 | 2007-05-23 | [
"cond-mat"
] | E.Z.Kuchinskii, A.I.Posazhennikova, M.V.Sadovskii |
cond-mat/9409015 | Geographic speciation in the Derrida-Higgs model of species formation | We consider the Derrida-Higgs (DH) statistical model of species formation in
the case where the population is geographically distributed in discrete
locations, and mating only takes place within one location. Keeping the rate of
migration between neighbouring locations at a fixed value, we change the
mutation rate, cha... | 1994-09-06 | 2009-10-22 | [
"cond-mat",
"q-bio.PE"
] | F Manzo and L Peliti |
cond-mat/9409017 | Gap Formation Probability of the $\alpha-$ Ensemble | In this paper we employ the continuum approximation of Dyson to determine the
asymptotic gap formation probability in the spectrum of $N\times N$ Hermitean
random matrices. The associated orthogonal polynomials has weight function,
$w(x)=e^{-u(x)},$ where $u(x)=x^{\alpha},\;\alpha>0,\;0<x<\infty.$ It is shown
that the ... | 1994-09-06 | 2015-06-25 | [
"cond-mat"
] | Yang Chen and Kasper Juel Eriksen |
cond-mat/9409010 | Exactly solvable Kondo lattice model | In this work, we exactly solve a Kondo lattice model in the thermodynamic
limit. The system consists of an electronic conduction band described by
unconstrained hopping matrix elements between the lattice sites. The conducting
electrons interact with a localized impurity spin at each lattice cell. We have
found the exa... | 1994-09-05 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | D. F. Wang and C. Gruber |
cond-mat/9409012 | Compressible $\nu=\frac{1}{2}$ state in a finite size study? | This is a comment published in Phys. Rev. Lett. vol. 73, page 1051 (1994). | 1994-09-05 | 2009-10-22 | [
"cond-mat"
] | J.K. Jain |
cond-mat/9409009 | Domain Patterns in Incommensurate Systems with the Uniaxial Real Order
Parameter | The basic Landau model for the incommensurate-commensurate transition to the
uniform or dimerized uniaxial ordering is critically reexamined. The previous
analyses identified only sinusoidal and homogeneous solutions as
thermodynamically stable and proposed a simple phase diagram with the first
order phase transition b... | 1994-09-05 | 2009-10-22 | [
"cond-mat"
] | V. Dananic and A. Bjelis, Zagreb, Croatia |
cond-mat/9409011 | Polymer Collapse on Fluctuating Random Surfaces | The conformations of interacting linear polymers on a dynamical planar random
lattice are studied using a random two-matrix model. An exact expression for
the partition function of self-avoiding chains subject to attractive contact
interactions of relative strength $1/c$, $0<c<1$, is found as a function of
chain length... | 1994-09-05 | 2008-02-03 | [
"cond-mat",
"hep-th"
] | Simon Dalley |
cond-mat/9409005 | Magnetic screening properties of an incompressible chiral fluid | We study the possible penetration of a static magnetic field in an idealized
sample of many layers supporting a two dimensional charged chiral quantum
fluid, to see whether there is a kind of Meissner effect. This is a non
standard problem since the quantum fluid is incompressible having a gap in its
spectrum. We find ... | 1994-09-02 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Pietro Donatis, Roberto Iengo (Sissa Trieste) |
cond-mat/9409008 | Stability and effective masses of composite-fermions in the first and
second Landau Level | We propose a measure of the stability of composite fermions (CF's) at
even-denominator Landau-level filling fractions. Assuming Landau-level mixing
effects are not strong, we show that the CF liquid at $\nu=2+1/2$ in the $n=1$
Landau level cannot exist and relate this to the absence of a hierarchy of
incompressible sta... | 1994-09-02 | 2009-10-22 | [
"cond-mat"
] | R. Morf and N. d'Ambrumenil |
cond-mat/9409007 | Vortex Lattice Melting in 2D Superconducting Networks and Films | We carry out MC studies of 2D superconducting networks, in an applied
magnetic field, for square and honeycomb geometries. We consider both dilute
systems (f=1/q) and systems near full frustration (f=1/2-1/q). For the dilute
case (which models a film as q->infinity), we find two transitions: at
T_c(f)~1/q there is a de... | 1994-09-02 | 2009-10-22 | [
"cond-mat"
] | M. Franz and S. Teitel |
cond-mat/9409006 | Two particle correlations and orthogonality catastrophe in interacting
Fermi systems | The wave function of two fermions, repulsively interacting in the presence of
a Fermi sea, is evaluated in detail. We consider large but finite systems in
order to obtain an unabiguous picture of the two-particle correlations. As
recently pointed out by Anderson, in two or lower dimensions the particles may
be correlat... | 1994-09-02 | 2015-06-25 | [
"cond-mat"
] | W. Metzner and C. Castellani |
cond-mat/9409001 | Topological Defects, Orientational Order, and Depinning of the Electron
Solid in a Random Potential | We report on the results of molecular dynamics simulation (MD) studies of the
classical two-dimensional electron crystal in the presence disorder. Our study
is motivated by recent experiments on this system in modulation doped
semiconductor systems in very strong magnetic fields, where the magnetic length
is much small... | 1994-09-01 | 2009-10-22 | [
"cond-mat"
] | Min-Chul Cha and H.A. Fertig |
cond-mat/9409004 | Currents in the Compressible and Incompressible Regions of the 2DEG | We derive a general expression for the low-temperature current distribution
in a two-dimensional electron gas, subjected to a perpendicular magnetic field
and in a confining potential that varies slowly on the scale of the magnetic
length l. The analysis is based on a self-consistent one-electron description,
such as t... | 1994-09-01 | 2009-10-22 | [
"cond-mat"
] | Michael R. Geller and Giovanni Vignale |
cond-mat/9409002 | Driven Depinning in Anisotropic Media | We show that the critical behavior of a driven interface, depinned from
quenched random impurities, depends on the isotropy of the medium. In
anisotropic media the interface is pinned by a bounding (conducting) surface
characteristic of a model of mixed diodes and resistors. Different universality
classes describe depi... | 1994-09-01 | 2009-10-22 | [
"cond-mat"
] | L.-H. Tang, M. Kardar, and D. Dhar |
cond-mat/9409003 | Instabilities of Charged Polyampholytes | We consider polymers formed from a (quenched) random sequence of charged
monomers of opposite signs. Such polymers, known as polyampholytes (PAs), are
compact when completely neutral and expanded when highly charged. We examine
the transition between the two regimes by Monte Carlo simulations, and by
analogies to charg... | 1994-09-01 | 2009-10-22 | [
"cond-mat"
] | Yacov Kantor and Mehran Kardar |
cond-mat/9408100 | Liberating Exotic Slaves | The introduction of confined, ``slave'' fields is frequently useful as a
formal device in models of condensed matter physics; it becomes a conceptual
necessity for describing possible phases of matter where the slaves are
liberated. Here I discuss some aspects of the fractional quantum Hall effect
from this point of vi... | 1994-08-31 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Frank Wilczek |
cond-mat/9408097 | Lattice Green Function (at 0) for the 4d Hypercubic Lattice | The generating function for recurrent Polya walks on the four dimensional
hypercubic lattice is expressed as a Kampe-de-Feriet function. Various
properties of the associated walks are enumerated. | 1994-08-31 | 2009-10-22 | [
"cond-mat"
] | M.L. Glasser and A.J. Guttmann |
cond-mat/9408096 | Observable Zero Sound in Strongly Correlated Metals | The slow zero-sound mode expected near the Mott transition in strongly
interacting two-dimensional Fermi systems that are neutral is shown to persist
as the physical sound mode in the case that the fermion carries electronic
charge and is embedded in a positive ionic background. The latter sound
velocity softens comple... | 1994-08-31 | 2009-10-22 | [
"cond-mat"
] | J.P. Rodriguez |
cond-mat/9408098 | Magnetic von-Neumann lattice for two-dimensional electrons in the
magnetic field | One-particle eigenstates and eigenvalues of two-dimensional electrons in the
strong magnetic field with short range impurity and impurities, cosine
potential, boundary potential, and periodic array of short range potentials are
obtained by magnetic von-Neumann lattice in which Landau level wave functions
have minimum s... | 1994-08-31 | 2009-10-22 | [
"cond-mat"
] | K.Ishikawa, N.Maeda and K.Tadaki |
cond-mat/9408101 | Integrble Models in Condensed Matter Physics | This is an expanded version of the lectures given at the Trieste Summer
School 1992 on Low-dimensional Quantum Field Theories for Condensed Matter
Physicists. | 1994-08-31 | 2016-11-03 | [
"cond-mat"
] | Natan Andrei |
cond-mat/9408102 | Rigorous upper bound for the persistent current in systems with toroidal
geometry | It is shown that the absolute value of the persistent current in a system
with toroidal geometry is rigorously less than or equal to $e \hbar N /4 \pi m
r_0^2$, where $N$ is the number of electrons, and $r_0^{-2} = \langle
r_i^{-2}\rangle$ is the equilibrium average of the inverse of the square of the
distance of an el... | 1994-08-31 | 2009-10-22 | [
"cond-mat"
] | Giovanni Vignale |
cond-mat/9408099 | Hyperuniversality of Fully Anisotropic Three-Dimensional Ising Model | For the fully anisotropic simple-cubic Ising lattice, the critical
finite-size scaling amplitudes of both the spin-spin and energy-energy inverse
correlation lengths and the singular part of the reduced free-energy density
are calculated by the transfer-matrix method and a finite-size scaling for
cyclic L x L x oo clus... | 1994-08-31 | 2009-10-22 | [
"cond-mat"
] | M. A. Yurishchev |
cond-mat/9408093 | The effects of the carrier interaction and electric fields on subband
structures of selectively--doped semiconductor quantum wells | We investigate the ground--state electronic properties of the symmetrically--
doped semiconductor quantum well in the presence of a homogeneous electric
field. In this paper we examined the effect of the electric field and carrier
interaction on the subband structure as a function of the field strength and
carrier conc... | 1994-08-30 | 2008-02-03 | [
"cond-mat"
] | Sung--Kyun Park and Kyung--Soo Yi |
cond-mat/9408095 | Theory of electron-hole asymmetry in doped {\em CuO$_2$} planes | The magnetic phase diagrams, and other physical characteristics, of the hole-
doped {\em La$_{2-x}$Sr$_x$CuO$_4$} and electron-doped {\em Nd$_{2-x}$Ce$_x$
CuO$_4$} high-temperature superconductors are profoundly different. Starting
with the $t-t^{\prime}-J$ model, the spin distortions and the spatial distri-
bution of ... | 1994-08-30 | 2009-10-22 | [
"cond-mat"
] | R.J. R.J. Gooding, K.J.E. Vos, and P.W. Leung |
cond-mat/9408094 | Transport properties of a quantum wire in the presence of impurities and
long-range Coulomb forces | One-dimensional electron systems interacting with long-range Coulomb forces
(quantum wires) show a Wigner crystal structure. We investigate in this paper
the transport properties of such a Wigner crystal in the presence of
impurities. Contrary to what happens when only short-range interactions are
included, the system ... | 1994-08-30 | 2009-10-22 | [
"cond-mat"
] | H. Maurey and T. Giamarchi |
cond-mat/9408092 | Exactly Solvable Models of Strongly Correlated Electrons | This is a reprint volume devoted to exact solutions of models of strongly
correlated electrons in one spatial dimension by means of the Bethe Ansatz. | 1994-08-29 | 2007-05-23 | [
"cond-mat"
] | V.E. Korepin and F.H.L. Essler |
cond-mat/9408091 | Extremal Segments in Random Sequences | We investigate the probability for the largest segment in with total
displacement $Q$ in an $N$-step random walk to have length $L$. Using
analytical, exact enumeration, and Monte Carlo methods, we reveal the complex
structure of the probability distribution in the large $N$ limit. In
particular, the size of the longes... | 1994-08-29 | 2009-10-22 | [
"cond-mat"
] | Yacov Kantor and Deniz Ertas |
cond-mat/9408090 | Exact ground state correlations in the supersymmetric $1/r^2$ exchange
$t-J$ model | Some ground state static correlation functions for the $1/r^2$ exchange $t-J$
model of Kuramoto and Yokoyama are calculated exactly. The correlations
calcualted are the pair distribution functions between two down spins, a down
spin and a hole, and two holes, and the one body density matrix (equal time
retarded Green's... | 1994-08-28 | 2009-10-22 | [
"cond-mat"
] | P.J. Forrester |
cond-mat/9408089 | Laughlin State on Stretched and Squeezed Cylinders and Edge Excitations
in Quantum Hall Effect | We study the Laughlin wave function on the cylinder. We find it only
describes an incompressible fluid when the two lengths of the cylinder are
comparable. As the radius is made smaller at fixed area, we observe a
continuous transition to the charge density wave Tao-Thouless state. We also
present some exact properties... | 1994-08-27 | 2009-10-22 | [
"cond-mat"
] | E.H. Rezayi, and F.D.M. Haldane |
cond-mat/9408087 | Phase Diagram for a Luttinger Liquid coupled to Phonons in one dimension | The Green function and the ordering correlation functions of a system of
electrons coupled to acoustic phonons are calculated explicitly. The
sensitivity of the correlation function exponents to the Wentzel-Bardeen
singularity is discussed. A phase diagram is established for the Hubbard model
coupled to phonons, using ... | 1994-08-26 | 2015-06-25 | [
"cond-mat"
] | Thierry Martin and Daniel Loss |
cond-mat/9408086 | Wentzel-Bardeen singularity and phase diagram for interacting electrons
coupled to acoustic phonons in one dimension | Using a Luttinger liquid description, the correlation function exponents of
various response functions are calculated. Their striking sensitivity to the
non perturbative Wentzel-Bardeen singularity is discussed. For the Hubbard
model coupled to phonons, the equivalent of a phase diagram is established. By
increasing th... | 1994-08-26 | 2009-10-22 | [
"cond-mat"
] | Daniel Loss and Thierry Martin |
cond-mat/9408088 | Wentzel-Bardeen singularity in coupled Luttinger liquids: transport
properties | The recent progress on 1 D interacting electrons systems and their
applications to study the transport properties of quasi one dimensional wires
is reviewed. We focus on strongly correlated electrons coupled to low energy
acoustic phonons in one dimension. The Wentzel--Bardeen singularity suppresses
antiferromagnetic f... | 1994-08-26 | 2015-06-25 | [
"cond-mat"
] | Thierry Martin |
cond-mat/9408083 | Exact Results for Hamiltonian Walks from the Solution of the Fully
Packed Loop Model on the Honeycomb Lattice | We derive the nested Bethe Ansatz solution of the fully packed O($n$) loop
model on the honeycomb lattice. From this solution we derive the bulk free
energy per site along with the central charge and geometric scaling dimensions
describing the critical behaviour. In the $n=0$ limit we obtain the exact
compact exponents... | 1994-08-25 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | M.T. Batchelor, J. Suzuki and C.M. Yung |
cond-mat/9408085 | Time-Dependent Current Partition in Mesoscopic Conductors | The currents at the terminals of a mesoscopic conductor are evaluated in the
presence of slowly oscillating potentials applied to the contacts of the
sample. The need to find a charge and current conserving solution to this
dynamic current partition problem is emphasized. We present results for the
electro-chemical adm... | 1994-08-25 | 2009-10-22 | [
"cond-mat"
] | M. Buttiker (IBM T. J. Watson Res. Ctr., Yorktown Heights, N.Y.) |
cond-mat/9408084 | The Chiral Potts Model and Its Associated Link Invariant | A new link invariant is derived using the exactly solvable chiral Potts model
and a generalized Gaussian summation identity. Starting from a general
formulation of link invariants using edge-interaction spin models, we establish
the uniqueness of the invariant for self-dual models. We next apply the
formulation to the ... | 1994-08-25 | 2009-10-22 | [
"cond-mat"
] | F. Y. Wu, P. Pant (Department of Physics, Northeastern University) and
C.King (Department of Mathematics, Northeastern University) |
cond-mat/9408080 | Density waves and $1/f$ density fluctuations in granular flow | We simulate the granular flow in a narrow pipe with a lattice-gas automaton
model. We find that the density in the system is characterized by two features.
One is that spontaneous density waves propagate through the system with
well-defined shapes and velocities. The other is that density waves are so
distributed to ma... | 1994-08-24 | 2009-10-22 | [
"cond-mat",
"comp-gas",
"nlin.CG"
] | Gongwen Peng and Hans J. Herrmann |
cond-mat/9408075 | Mesoscopic Fluctuations of Eigenfunctions and "Level Velocity"
Distribution in Disordered Metals | We calculate the distribution of eigenfunction amplitudes and the variance of
the ``inverse participation ratio'' (IPR) in disordered metallic samples. A
relation is established between the distribution function of IPR and that of
``level velocities'' -- parametric derivatives of energy levels with respect to
a random ... | 1994-08-24 | 2009-10-22 | [
"cond-mat"
] | Yan V.Fyodorov and Alexander D.Mirlin |
cond-mat/9408082 | Charge transfer fluctuation, $d-$wave superconductivity, and the
$B_{1g}$ Raman phonon in the Cuprates: A detailed analysis | The Raman spectrum of the $B_{1g}$ phonon in the superconducting cuprate
materials is investigated theoretically in detail in both the normal and
superconducting phases, and is contrasted with that of the $A_{1g}$ phonon. A
mechanism involving the charge transfer fluctuation between the two oxygen ions
in the CuO$_2$ p... | 1994-08-24 | 2009-10-22 | [
"cond-mat"
] | T. P. Devereaux, A. Virosztek and A. Zawadowski |
cond-mat/9408073 | Ballistic Transport Through Chaotic Cavities: Can Parametric
Correlations and the Weak Localization Peak be Described by a Brownian Motion
Model? | A Brownian motion model is devised on the manifold of S-matrices, and applied
to the calculation of conductance-conductance correlations and of the weak
localization peak. The model predicts that (i) the correlation function in $B$
has the same shape and width as the weak localization peak; (ii) the functions
behave as... | 1994-08-24 | 2009-04-30 | [
"cond-mat"
] | Jochen Rau |
cond-mat/9408074 | The High-Field Superconducting Transition induced by Correlated Disorder | The "glassy" superconducting transition at high magnetic fields can be
induced by columnar disorder. A model is proposed in which the thermodynamics
of Bose condensation of Cooper pairs into the lowest Landau-level eigenstate of
the random potential can be solved exactly. The solution reflects a peculiar
character of t... | 1994-08-24 | 2009-10-22 | [
"cond-mat"
] | Zlatko Tesanovic and Igor F. Herbut |
cond-mat/9408081 | Noise in a Quantum Point Contact due to a Fluctuating Impurity
Configuration | We propose a theoretical model for the low-frequency noise observed in a
quantum point contact (QPC) electrostatically defined in the 2D electron gas at
a GaAs-AlGaAs interface. In such contacts electron scattering by soft impurity-
or boundary potentials coherently splits an incoming wave function between
different tr... | 1994-08-24 | 2009-10-22 | [
"cond-mat"
] | J. P. Hessling, Yu. Galperin, M. Jonson, R. I. Shekhter, A.M. Zagoskin |
cond-mat/9408079 | Glassy Transition and Aging in a Model without Disorder | We study the off-equilibrium relaxational dynamics of the Amit-Roginsky
$\phi^3$ field theory, for which the mode coupling approximation is exact. We
show that complex phenomena such as aging and ergodicity breaking are present
at low temperature, similarly to what is found in long range spin glasses. This
is a general... | 1994-08-24 | 2009-10-22 | [
"cond-mat"
] | Silvio Franz and John Hertz |
cond-mat/9408078 | Three-dimensional electronic instabilities in polymerized solid A1C60 | The low-temperature structure of A1C60 (A=K, Rb) is an ordered array of
polymerized C60 chains, with magnetic properties that suggest a non-metallic
ground state. We study the paramagnetic state of this phase using
first-principles electronic-structure methods, and examine the magnetic
fluctuations around this state us... | 1994-08-24 | 2009-10-22 | [
"cond-mat"
] | S.C. Erwin, G.V. Krishna, and E.J. Mele |
cond-mat/9408068 | Exact Conductance through Point Contacts in the $\nu =1/3$ Fractional
Quantum Hall Effect | The conductance for tunneling through a point contact between two $\nu =1/3$
quantum Hall edges is described by a universal scaling function, which has
recently been measured experimentally. We compute this universal function
exactly, by using the thermodynamic Bethe ansatz and a Boltzmann equation. | 1994-08-23 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | P. Fendley, A.W.W. Ludwig and H. Saleur |
cond-mat/9408072 | Level Statistics in a Metallic Sample: Corrections to the Wigner-Dyson
Distribution | Deviation of the level correlation function in a mesoscopic metallic sample
from the Wigner--Dyson distribution is calculated by using a combination of the
renormalization group and non-perturbative treatment. For given spatial
dimension the found correction is determined by the sample conductance. | 1994-08-23 | 2007-05-23 | [
"cond-mat"
] | Vladimir E. Kravtsov and Alexander D. Mirlin |
cond-mat/9408071 | Supersymmetric classical mechanics | We study the classical properties of a supersymmetric system which is often
used as a model for supersymmetric quantum mechanics. It is found that the
classical dynamics of the bosonic as well as the fermionic degrees of freedom
is fully described by a so--called quasi--classical solution. We also comment
on the import... | 1994-08-23 | 2009-10-22 | [
"cond-mat",
"chem-ph",
"hep-th"
] | Georg Junker and Stephan Matthiesen |
cond-mat/9408070 | Acceleration Schemes for Ab-Initio Molecular Dynamics and Electronic
Structure Calculations | We study the convergence and the stability of fictitious dynamical methods
for electrons. First, we show that a particular damped second-order dynamics
has a much faster rate of convergence to the ground-state than first-order
steepest descent algorithms while retaining their numerical cost per time step.
Our damped dy... | 1994-08-23 | 2009-10-22 | [
"cond-mat"
] | Francesco Tassone, Francesco Mauri and Roberto Car |
cond-mat/9408069 | Superconductive Phonon Anomalies in High-$T_c$ Cuprates | We consider the effects on phonon dynamics of spin-lattice coupling within
the slave-boson mean-field treatment of the extended $t$-$J$ model. With no
additional assumptions the theory is found to give a semi-quantitative account
of the frequency and linewidth anomalies observed by Raman and neutron
scattering for the ... | 1994-08-23 | 2009-10-22 | [
"cond-mat"
] | B. Normand, H. Kohno and H. Fukuyama |
cond-mat/9408066 | Effective Medium Tight-Binding Theory | In this thesis a new model for calculating the total energy of atomic and
solid systems is presented. The model is used to study the properties of the
Si(100) surface and dislocation dynamics in the diamond structure. For the
Si(100) surface the main result is the finding of an incomplete melted state at
$1550^0 K$. Th... | 1994-08-22 | 2007-05-23 | [
"cond-mat"
] | Kurt Stokbro |
cond-mat/9408067 | Bound on the Group Velocity of an Electron in a 1D Periodic Potential | By using a recently derived upper bound on the allowed equilibrium current in
a ring, it is proved that the magnitude of the group velocity of a Bloch
electron in a one-dimensional periodic potential is always less than or equal
to the group velocity of the same Bloch state in an empty lattice. Our
inequality also impl... | 1994-08-22 | 2009-10-22 | [
"cond-mat"
] | Michael R. Geller and Giovanni Vignale |
cond-mat/9408065 | Anisotropic two-dimensional Heisenberg model by Schwinger-boson
Gutzwiller projected method | Two-dimensional Heisenberg model with anisotropic couplings in the $x$ and
$y$ directions ($J_x \neq J_y$) is considered. The model is first solved in the
Schwinger-boson mean-field approximation. Then the solution is Gutzwiller
projected to satisfy the local constraint that there is only one boson at each
site. The en... | 1994-08-22 | 2009-10-22 | [
"cond-mat"
] | T.Miyazaki, D.Yoshioka, M.Ogata |
cond-mat/9408064 | Tunneling and Quantum Noise in 1-D Luttinger Liquids | We study non-equilibrium noise in the transmission current through barriers
in 1-D Luttinger liquids and in the tunneling current between edges of
fractional quantum Hall liquids. The distribution of tunneling events through
narrow barriers can be described by a Coulomb gas lying in the time axis along
a Keldysh (or no... | 1994-08-21 | 2009-10-22 | [
"cond-mat"
] | C. de C. Chamon, D. E. Freed and X. G. Wen |
cond-mat/9408057 | Spin dynamics of the doped t-J model | We present a new method for studying the low energy excitations in finite
cluster systems and apply it to clarify the nature of the low energy spin
excitations in the moderately doped t-J model.
We find that the character of the low energy spin excitations changes within
the Brillouin zone, with the dominant excitati... | 1994-08-19 | 2007-05-23 | [
"cond-mat"
] | R. Eder and Y. Ohta (Department of Applied Physics, Nagoya University,
Nagoya 464-01, Japan) |
cond-mat/9408056 | Exactly solvable model of a quantum spin glass | A mean field spherical model with random couplings between pairs, quartets,
and possibly higher multiplets of spins is considered. It has the same critical
behavior as the Sherrington-Kirkpatrick model. It thus exhibits replica
symmetry breaking. The order parameter function is solved exactly in the whole
low temperatu... | 1994-08-19 | 2009-10-22 | [
"cond-mat"
] | Th. M. Nieuwenhuizen |
cond-mat/9408063 | Ballistic transport: A view from the quantum theory of motion | Ballistic transport of electrons through a quantum wire with a constriction
is studied in terms of Bohm's interpretation of quantum mechanics, in which the
concept of a particle orbit is permitted. The classical bouncing ball
trajectories, which justify the name ``ballistic transport'', are established
in the large wav... | 1994-08-19 | 2015-06-25 | [
"cond-mat"
] | Hua Wu and D. W. L. Sprung (Department of Physics and Astronomy,
McMaster University Hamilton, Ontario, Canada) |
cond-mat/9408053 | Spin Softening in Models with Competing Interactions: A New High
Anisotropy Expansion to All Orders | An expansion in inverse spin anisotropy, which enables us to study the
behaviour of discrete spin models as the spins soften, is developed. In
particular we focus on models, such as the chiral clock model and the $p$-state
clock model with competing first and second neighbour interactions, where there
are special multi... | 1994-08-19 | 2009-10-22 | [
"cond-mat"
] | F. Seno and J.M. Yeomans |
cond-mat/9408055 | Quantum description of spherical spins | The spherical model for spins describes ferromagnetic phase transitions well,
but it fails at low temperatures. A quantum version of the spherical model is
proposed. It does not induce qualitative changes near the phase transition.
However, it produces a physical low temperature behavior. The entropy is
non-negative. M... | 1994-08-19 | 2009-10-22 | [
"cond-mat"
] | Th. M. Nieuwenhuizen |
cond-mat/9408054 | Quasi-classical path integral approach to supersymmetric quantum
mechanics | {}From Feynman's path integral, we derive quasi-classical quantization rules
in supersymmetric quantum mechanics (SUSY-QM). First, we derive a SUSY
counterpart of Gutzwiller's formula, from which we obtain the quantization rule
of Comtet, Bandrauk and Campbell when SUSY is good. When SUSY is broken, we
arrive at a new ... | 1994-08-19 | 2009-10-22 | [
"cond-mat",
"chem-ph",
"hep-th"
] | Akira Inomata and Georg Junker |
cond-mat/9408061 | Conductivity of interacting spinless fermion systems via the high
dimensional approach | Spinless fermions with repulsion are treated non-perturbatively by
classifying the diagrams of the generating functional $\Phi$ in powers of the
inverse lattice dimension $1/d$. The equations derived from the first two
orders are evaluated on the one- and on the two-particle level. The order
parameter of the AB-charge ... | 1994-08-19 | 2009-10-22 | [
"cond-mat"
] | G.S. Uhrig |
cond-mat/9408062 | A Plane of Weakly Coupled Heisenberg Chains: Theoretical Arguments and
Numerical Calculations | The $S=1/2$, nearest-neighbor, quantum Heisenberg antiferromagnet on the
square lattice with spatially anisotropic couplings is reconsidered, with
particular attention to the following question: at T=0, does N\'eel
orderdevelop at infinitesimal interchain coupling, or is there a nonzero
critical coupling? A heuristic r... | 1994-08-19 | 2011-01-06 | [
"cond-mat"
] | Ian Affleck, Martin P. Gelfand, and Rajiv R. P. Singh |
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