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 |
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cond-mat/9504074 | Correlation functions of the 2D sine-Gordon model | A number of two-dimensional(2D) critical phenomena can be described in terms
of the 2D sine-Gordon model. With the bosonization, several 1D quantum systems
are also transformed to the same model. However, the transition of the 2D
sine-Gordon model, Berezinskii-Kosterlitz-Thouless(BKT) transition, is
essentially differe... | 1995-04-19 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Kiyohide Nomura |
cond-mat/9504071 | Vortices in Schwinger-Boson Mean-Field Theory of Two-Dimensional Quantum
Antiferromagnets | In this paper we study the properties of vortices in two dimensional quantum
antiferromagnets with spin magnitude S on a square lattice within the framework
of Schwinger-boson mean field theory. Based on a continuum description, we show
that vortices are stable topological excitations in the disordered state of
quantum... | 1995-04-19 | 2009-10-28 | [
"cond-mat"
] | Tai Kai Ng (Hong Kong University of Science and Technology) |
cond-mat/9504068 | QUANTUM HALL EFFECT OF HARD-CORE BOSONS | Motivated by a mean-field approach, which has been employed for anyon
superfluidity and the fractional quantum Hall effect, the quantum Hall effect
(QHE) of hard-core bosons is investigated. It is shown that QHE is possible
{\em only} in the thermodynamic limit. The filling factors where QHE may be
expected are obtaine... | 1995-04-18 | 2015-06-25 | [
"cond-mat"
] | J. K. Jain and Sumathi Rao |
cond-mat/9504069 | Charge density oscillations in a quasi-two-dimensional electron gas for
integer filling factors | The possibility of charge density oscillations in a {\it finite-thickness}
two-dimensional system is investigated for strong magnetic fields and integer
filling factors. Using an effective action formalism, it is shown that an {\it
oscillatory charge density} (OCD) is generated in a self-consistent way and is
favored e... | 1995-04-18 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | S. Sakhi and P. Vasilopoulos (Concordia University) |
cond-mat/9504067 | Vortex Entanglement and Broken Symmetry | Based on the London approximation, we investigate numerically the stability
of the elementary configurations of entanglement, the twisted-pair and the
twisted-triplet, in the vortex-lattice and -liquid phases. We find that, except
for the dilute limit, the twisted-pair is unstable and hence irrelevant in the
discussion... | 1995-04-18 | 2009-10-28 | [
"cond-mat"
] | Andreas Sch\"onenberger, Vadim Geshkenbein, and Gianni Blatter |
cond-mat/9504070 | The short-time Dynamics of the Critical Potts Model | The universal behaviour of the short-time dynamics of the three state Potts
model in two dimensions at criticality is investigated with Monte Carlo
methods. The initial increase of the order is observed. The new dynamic
exponent $\theta$ as well as exponent $z$ and $\beta/\nu$ are determined. The
measurements are carri... | 1995-04-18 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | L. Schuelke, and B. Zheng |
cond-mat/9504066 | The Nature of Thermopower in Bipolar Semiconductors | The thermoemf in bipolar semiconductors is calculated. It is shown that it is
necessary to take into account the nonequilibrium distribution of electron and
hole concentrations (Fermi quasilevels of the electrons and holes). We find
that electron and hole electric conductivities of contacts of semiconductor
samples wit... | 1995-04-17 | 2009-10-28 | [
"cond-mat"
] | Yu. G. Gurevich and O. Yu. Titov (CINVESTAV--IPN Mexico), G. N.
Logvinov (Teacher Training University, Ukraine), O. I. Lyubimov (Kharkov
State University, Ukraine) |
cond-mat/9504064 | Random $s=1/2$ $XY$ chains and the theory of quasi-one-dimensional
ferroelectrics with hydrogen bonds | The paper presents a new numerical approach for studying the thermodynamical
and dynamical properties of finite spin-$\frac{1}{2}$ $XY$ chains. Special
attention is given to examining the influence of disorder on the average
transverse dynamical susceptibility of Ising chain in random transverse field. | 1995-04-17 | 2007-05-23 | [
"cond-mat"
] | O.Derzhko, T.Krokhmalskii |
cond-mat/9504065 | Cluster-Exact Approximation of Spin Glass Groundstates | We present an algorithm which calculates groundstates of Ising spin glasses
approximately. It works by randomly selecting clusters of spins which exhibit
no frustrations. The spins which were not selected, contribute to the local
fields of the selected spins. For the spin--cluster a groundstate is exactly
calaculated b... | 1995-04-17 | 2015-06-25 | [
"cond-mat"
] | A.K. Hartmann (Universitaet Heidelberg, Germany) |
cond-mat/9504063 | Quantum Boltzmann equation of composite fermions interacting with a
gauge field | We derive the quantum Boltzmann equation (QBE) of composite fermions at/near
the $\nu = 1/2$ state using the non-equilibrium Green's function technique. The
lowest order perturbative correction to the self-energy due to the strong gauge
field fluctuations suggests that there is no well defined
Landau-quasi-particle. Th... | 1995-04-16 | 2009-10-28 | [
"cond-mat"
] | Yong Baek Kim, Patrick A. Lee, and Xiao-Gang Wen |
cond-mat/9504062 | Linear Temperature Variation of the Penetration Depth in YBCO Thin Films | We have measured the penetration depth $\lambda(T)$ on $\rm
YBa_{2}Cu_{3}O_{7}$ thin films from transmission at 120, 330 and 510~GHz,
between 5 and 50~K. Our data yield simultaneously the absolute value and the
temperature dependence of $\lambda(T)$. In high quality films $\lambda(T)$
exhibits the same linear temperatu... | 1995-04-14 | 2009-10-28 | [
"cond-mat"
] | L.A. de Vaulchier, J.P. Vieren, Y. Guldner, N. Bontemps, R. Combescot,
Y. Lemaitre, J.C. Mage |
cond-mat/9504061 | Non-equilibrium phase transitions in one-dimensional kinetic Ising
models | A family of nonequilibrium kinetic Ising models, introduced earlier, evolving
under the competing effect of spin flips at {\it zero temperature} and nearest
neighbour random spin exchanges is further investigated here. By increasing the
range of spin exchanges and/or their strength the nature of the phase
transition 'I... | 1995-04-14 | 2009-10-28 | [
"cond-mat",
"hep-lat"
] | N. Menyhard, G. Odor |
cond-mat/9504059 | Complexity as the driving force for dynamical glassy transitions | Aspects of the dynamical glass transition are considered within a mean field
spin glass model. At the dynamical transition the the system condenses in a
state of lower entropy. The difference, the information entropy or complexity,
is calculated by analysis of the metastable (TAP) states. It increases for
lower tempera... | 1995-04-13 | 2007-05-23 | [
"cond-mat"
] | Th. M. Nieuwenhuizen (University of Amsterdam) |
cond-mat/9504058 | Anisotropic multiple scattering in diffuse media | The multiple scattering of scalar waves in diffusive media is investigated by
means of the radiative transfer equation. This approach amounts to a
resummation of the ladder diagrams of the Born series; it does not rely on the
diffusion approximation. Quantitative predictions are obtained, concerning
various observables... | 1995-04-13 | 2007-05-23 | [
"cond-mat"
] | E. Amic, J.M. Luck, and Th.M. Nieuwenhuizen |
cond-mat/9504060 | A Numerical Study of Phase Transitions Inside the Pores of Aerogels | Phase transitions inside the pores of an aerogel are investigated by
modelizing the aerogel structure by diffusion-limited cluster-cluster
aggregation on a cubic lattice in a finite box and considering $q$-states Potts
variables on the empty sites interacting via nearest-neighbours. Using a finite
size scaling analysin... | 1995-04-13 | 2009-10-28 | [
"cond-mat"
] | Katarina Uzelac, Anwar Hasmy and R\'emi Jullien |
cond-mat/9504057 | Coulomb Drag in Normal Metals and Superconductors: Diagrammatic Approach | The diagrammatic linear response formalism for the Coulomb drag in two--layer
systems is developed. This technique can be used to treat both elastic disorder
and intralayer interaction effects. In the absence of intralayer
electron--electron correlations we reproduce earlier results, obtained using
the kinetic equation... | 1995-04-13 | 2009-10-28 | [
"cond-mat"
] | Alex Kamenev and Yuval Oreg |
cond-mat/9504056 | To maximize or not to maximize the free energy of glassy systems, !=? | The static free energy of glassy systems can be expressed in terms of the
Parisi order parameter function. When this function has a discontinuity, the
location of the step is determined by maximizing the free energy. In dynamics a
transition is found at larger temperature, while the location of the step
satisfies a mar... | 1995-04-13 | 2009-10-28 | [
"cond-mat"
] | Th. M. Nieuwenhuizen (Amsterdam) |
cond-mat/9504049 | A puzzle on fluctuations of weights in spin glasses | In certain mean field models for spin glasses there occurs a one step replica
symmetry breaking pattern. As an example of general $1/N$-corrections in such
systems, the fluctuations in the internal energy are calculated. For this
specific quantity the outcome is known from the specific heat. It is shown that
the correc... | 1995-04-12 | 2009-10-28 | [
"cond-mat"
] | Th. M. Nieuwenhuizen (University of Amsterdam) |
cond-mat/9504055 | Small Angle Neutron Scattering of Aerogels: Simulations and Experiments | A numerical simulation of silica aerogels is performed using
diffusion-limited cluster-cluster aggregation of spheres inside a cubic box
(with periodic boundary conditions). The volume fraction $c$ is taken to be
sufficiently large to get a gel structure at the end of the process. In the
case of monodisperse spheres, t... | 1995-04-12 | 2009-10-28 | [
"cond-mat"
] | Anwar Hasmy, Marie Foret, Eric Anglaret, Jacques Pelous, Ren\'e Vacher
and R\'emi Jullien |
cond-mat/9504054 | Percolation in Cluster-Cluster Aggregation Processes | Numerical simulations of Diffusion-Limited and Reaction-Limited
Cluster-Cluster Aggregation processes of identical particles are performed in a
two-dimensional box. It is shown that, for concentrations larger than a
characteristic gel concentration, the morphology of the resulting spanning
cluster at the gel time $t_g$... | 1995-04-12 | 2009-10-28 | [
"cond-mat"
] | Anwar Hasmy and R\'emi Jullien |
cond-mat/9504051 | Tunneling through ultrasmall NIS junctions in terms of Andreev
reflection: a nonlinear response approach | The Andreev current through an ultrasmall NIS junction is calculated in a
systematic way by means of a nonlinear response approach basing on the
elementary Hamiltonian of quasiparticle tunneling. The voltage dependence of
current and differential conductance as well as the Andreev conductance are
derived for low- and h... | 1995-04-12 | 2016-08-17 | [
"cond-mat"
] | A. H\"adicke and W. Krech |
cond-mat/9504050 | Hyperscaling in the Domany-Kinzel Cellular Automaton | An apparent violation of hyperscaling at the endpoint of the critical line in
the Domany-Kinzel stochastic cellular automaton finds an elementary resolution
upon noting that the order parameter is discontinuous at this point. We derive
a hyperscaling relation for such transitions and discuss applications to
related exa... | 1995-04-12 | 2009-10-28 | [
"cond-mat"
] | Ronald Dickman and Alex Yu. Tretyakov |
cond-mat/9504048 | Normalization Sum Rule and Spontaneous Breaking of U(N) Invariance in
Random Matrix Ensembles | It is shown that the two-level correlation function $R(s,s')$ in the
invariant random matrix ensembles (RME) with soft confinement exhibits a "ghost
peak" at $s\approx -s'$. This lifts the sum rule prohibition for the level
number variance to have a Poisson-like term ${\rm var}(n)=\eta n$ that is
typical of RME with br... | 1995-04-12 | 2009-10-28 | [
"cond-mat"
] | C. M. Canali, and V. E. Kravtsov |
cond-mat/9504053 | Small Angle Scattering by Fractal Aggregates: A Numerical Investigation
of the Crossover Between the Fractal Regime and the Porod Regime | Fractal aggregates are built on a computer using off-lattice cluster-cluster
aggregation models. The aggregates are made of spherical particles of different
sizes distributed according to a Gaussian-like distribution characterised by a
mean $a_0$ and a standard deviation $\sigma$. The wave vector dependent
scattered in... | 1995-04-12 | 2015-06-25 | [
"cond-mat"
] | Anwar Hasmy, Ren\'e Vacher and R\'emi Jullien |
cond-mat/9504052 | Peak effect in twinned superconductors | A sharp maximum in the critical current $J_c$ as a function of temperature
just below the melting point of the Abrikosov flux lattice has recently been
observed in both low and high temperature superconductors. This peak effect is
strongest in twinned crystals for fields aligned with the twin planes. We
propose that th... | 1995-04-12 | 2009-10-28 | [
"cond-mat"
] | A.I. Larkin, M.C. Marchetti and V.M. Vinokur |
cond-mat/9504047 | Weak Localization Coexisting with a Magnetic Field in a
Normal-Metal--Superconductor Microbridge | A random-matrix theory is presented which shows that breaking time-reversal
symmetry by itself does {\em not} suppress the weak-localization correction to
the conductance of a disordered metal wire attached to a superconductor.
Suppression of weak localization requires applying a magnetic field as well as
raising the v... | 1995-04-12 | 2007-05-23 | [
"cond-mat"
] | P.W. Brouwer and C.W.J. Beenakker (Instituut-Lorentz, Leiden, The
Netherlands) |
cond-mat/9504046 | Insensitivity to Time-Reversal Symmetry Breaking of Universal
Conductance Fluctuations with Andreev Reflection | Numerical simulations of conduction through a disordered microbridge between
a normal metal and a superconductor have revealed an anomalous insensitivity of
the conductance fluctuations to a magnetic field. A theory for the anomaly is
presented: Both an exact analytical calculation (using random-matrix theory)
and a qu... | 1995-04-12 | 2007-05-23 | [
"cond-mat"
] | P.W. Brouwer and C.W.J. Beenakker (Instituut-Lorentz, Leiden, The
Netherlands) |
cond-mat/9504037 | On the Critical Temperature of Non-Periodic Ising Models on Hexagonal
Lattices | The critical temperature of layered Ising models on triangular and honeycomb
lattices are calculated in simple, explicit form for arbitrary distribution of
the couplings. | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | Ferenc Igloi and Peter Lajko (Research Institute for Solid State
Physics, H-1525 Budapest, Hungary) |
cond-mat/9504040 | Low-temperature transport of correlated electrons | Transport properties of a single-channel Luttinger liquid impinging on a
barrier have been studied for $g=1/2 - \epsilon$, where $g$ is the
dimensionless interaction constant and $|\epsilon| \ll 1$. The relevant
diagrams contributing to the conductance are identified and evaluated in all
orders. Our approach represents... | 1995-04-11 | 2007-05-23 | [
"cond-mat"
] | R. Egger (Freiburg, Germany), M. Sassetti (Genova, Italy) and U. Weiss
(Stuttgart, Germany) |
cond-mat/9504044 | The Sol-Gel Process Simulated by Cluster-Cluster Aggregation | The pair-correlation function $g(r,t)$ and its Fourier transform, the
structure factor $S(q,t)$, are computed during the gelation process of
identical spherical particles using the diffusion-limited cluster-cluster
aggregation model in a box. This numerical analysis shows that the time
evolution of the characteristic c... | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | Anwar Hasmy and R\'emi Jullien |
cond-mat/9504038 | Cyclotron effective mass of 2D electron layer at GaAs/AlGaAs
heterojunction subject to in-plane magnetic fields | We have found that Fermi contours of a two-dimensional electron gas at
$\rmGaAs/Al_xGa_{1-x}As$ interface deviate from a standard circular shape under
the combined influence of an approximately triangular confining potential and
the strong in-plane magnetic field. The distortion of a Fermi contour manifests
itself thro... | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | L. Smrcka, P. Vasek, J. Kolacek, T. Jungwirth, and M. Cukr (Institute
of Physics, Academy of Science of the Czech Republic) |
cond-mat/9504045 | Importance of the topological defects for two dimensional phase
transitions and their relevance for the renormalization group | For various two dimensional non linear $\sigma$ models, we present a direct
comparison between the $\beta$ functions computed with the $2+\epsilon$
renormalization group and the $\beta$ functions measured by Monte Carlo
simulations. The theoretical and measured $\beta$ functions match each other
nicely for models with ... | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | Gil Zumbach (Harvard University) |
cond-mat/9504036 | Quantum field theory of metallic spin glasses | We introduce an effective field theory for the vicinity of a zero temperature
quantum transition between a metallic spin glass (``spin density glass'') and a
metallic quantum paramagnet. Following a mean field analysis, we perform a
perturbative renormalization-group study and find that the critical properties
are domi... | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | Subir Sachdev, N. Read, and R. Oppermann |
cond-mat/9504041 | Fluctuating Bond Aggregation: a Model for Chemical Gel Formation | The Diffusion-Limited Cluster-Cluster Aggregation (DLCA) model is modified by
including cluster deformations using the {\it bond fluctuation} algorithm. From
3$d$ computer simulations, it is shown that, below a given threshold value
$c_g$ of the volumic fraction $c$, the realization of all intra-aggregate
bonding possi... | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | R. Jullien and A. Hasmy |
cond-mat/9504042 | Scaling Theory and Numerical Simulations of Aerogel Sintering | A simple scaling theory for the sintering of fractal aerogels is presented.
The densification at small scales is described by an increase of the lower
cut-off length $a$ accompanied by a decrease of the upper cut-off length $\xi$,
in order to conserve the total mass of the system. Scaling laws are derived
which predict... | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | R\'emi Jullien, Nathalie Olivi-Tran, Anwar Hasmy, Thierry Woignier,
Jean Phalippou, Daniel Bourret and Robert Semp\'er\'e |
cond-mat/9504039 | Raman scattering from fractals. Simulation on large structures by the
method of moments | We have employed the method of spectral moments to study the density of
vibrational states and the Raman coupling coefficient of large 2- and 3-
dimensional percolators at threshold and at higher concentration. We first
discuss the over-and under-flow problems of the procedure which arise when
-like in the present case... | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | G.Viliani, R.Dell'Anna, O.Pilla, M.Montagna (Universita' di Trento),
G.Ruoco, G.Signorelli, V.Mazzacurati (Universita' dell'Aquila) |
cond-mat/9504043 | Gas Transport in Porous Media: Simulations and Experiments on Partially
Densified Aerogels | The experimental density dependence of gas (argon and nitrogen) permeability
of partially densified silica aerogels in the Knudsen regime is quantitatively
accounted for by a computer model. The model simulates both the structure of
the sintered material and the random ballistic motion of a point particle
inside its vo... | 1995-04-11 | 2009-10-28 | [
"cond-mat"
] | Anwar Hasmy, Isabelle Beurroies, Daniel Bourret and R\'emi Jullien |
cond-mat/9504025 | Analytic results for $N$ particles with $1/r^2$ interaction in two
dimensions and an external magnetic field | The $2N$-dimensional quantum problem of $N$ particles (e.g. electrons) with
interaction $\beta/r^2$ in a two-dimensional parabolic potential $\omega_0$
(e.g. quantum dot) and magnetic field $B$, reduces exactly to solving a
$(2N-4)$-dimensional problem which is independent of $B$ and $\omega_0$. An
exact, infinite set ... | 1995-04-10 | 2009-10-28 | [
"cond-mat"
] | Neil F. Johnson (Condensed Matter Theory, Oxford U., England) and Luis
Quiroga (Condensed Matter Theory, U. de los Andes, Colombia) |
cond-mat/9504034 | Critical Fluctuations and Disorder at the Vortex Liquid to Crystal
Transition in Type-II Superconductors | We present a functional renormalization group (FRG) analysis of a
Landau-Ginzburg model of type-II superconductors (generalized to $n/2$ complex
fields) in a magnetic field, both for a pure system, and in the presence of
quenched random impurities. Our analysis is based on a previous FRG treatment
of the pure case [E.B... | 1995-04-10 | 2009-10-28 | [
"cond-mat"
] | M.A.Moore and T.J.Newman |
cond-mat/9504035 | Level spacing statistics of bidimensional Fermi liquids: II. Landau
fixed point and quantum chaos | We investigate the presence of quantum chaos in the spectrum of the
bidimensional Fermi liquid by means of analytical and numerical methods. This
model is integrable in a certain limit by bosonization of the Fermi surface. We
study the effect on the level statisticsof the momentum cutoff $\Lambda$
present in the bidime... | 1995-04-10 | 2009-10-28 | [
"cond-mat"
] | R. M\'elin |
cond-mat/9504033 | Entangled Electronic States in Multiple Quantum-Dot Systems | We present an analytically solvable model of $P$ colinear, two-dimensional
quantum dots, each containing two electrons. Inter-dot coupling via the
electron-electron interaction gives rise to sets of entangled ground states.
These ground states have crystal-like inter-plane correlations and arise
discontinously with inc... | 1995-04-10 | 2009-10-28 | [
"cond-mat"
] | Simon C. Benjamin and Neil F. Johnson (Condensed Matter Theory Group,
Oxford U., England) |
cond-mat/9504032 | Phase diagram of the Hubbard model at small doping and low temperature | Warning: We have recently discovered a technical error in the paper
cond-mat/9504032 and entitled here above, that invalidates part but not all of
our conclusions. A corrected version will be soon put in. | 1995-04-09 | 2008-02-03 | [
"cond-mat"
] | D.Foerster and H.Kachkachi |
cond-mat/9504031 | Magnetization Relaxation via Quantum and Classical Vortex Motion in a
Bose Glass Superconductor | I show that in Bose Glass superconductor with high $j_c$ and at low $T$ the
magnetization relaxation (S), dominated by quantum tunneling, is $\propto{\sqrt
j_c}$, which crosses over to the conventional classical rate $\propto T/j_c$ at
higher $T$ and lower $j_c$, with the crossover $T^*\sim j_c^{3/2}$. I argue
that due... | 1995-04-08 | 2016-08-31 | [
"cond-mat"
] | Leo Radzihovsky |
cond-mat/9504026 | Density functional calculations for 4He droplets | A novel density functional, which accounts correctly for the equation of
state, the static response function and the phonon-roton dispersion in bulk
liquid helium, is used to predict static and dynamic properties of helium
droplets. The static density profile is found to exhibit significant
oscillations, which are acco... | 1995-04-07 | 2009-10-28 | [
"cond-mat"
] | M. Casas, F. Dalfovo, A. Lastri, Ll. Serra, and S. Stringari |
cond-mat/9504030 | Change of the Chern number at band crossings | Let $H(\epsilon, x)$ be a finite dimensional hermitian matrix depending on
the variable $x$ taking its values on a 2D manifold and changing with
$\epsilon$. If at $\epsilon=0$ two bands are touching, we give a formula for
the change of Chern number of these bands as $\epsilon$ passes through zero. | 1995-04-07 | 2007-05-23 | [
"cond-mat"
] | J. Bellissard (Universit\'e Paul Sabatier, Physique Quantique) |
cond-mat/9504027 | Equivalence of Fokker-Planck approach and non-linear $\sigma$-model for
disordered wires in the unitary symmetry class | The exact solution of the Dorokhov-Mello-Pereyra-Kumar-equation for quasi
one-dimensional disordered conductors in the unitary symmetry class is employed
to calculate all $m$-point correlation functions by a generalization of the
method of orthogonal polynomials. We obtain closed expressions for the first
two conductan... | 1995-04-07 | 2009-10-28 | [
"cond-mat"
] | Klaus Frahm |
cond-mat/9504028 | Kondo effect versus Jahn-Teller effect: A new class of quantum impurity
problems | Impurity ions with orbitally degenerate ground electronic configuration
embedded in metals are subjects to both the Kondo effect and the Jahn-Teller
instability. While increasing the Jahn-Teller coupling, one passes, from the
region of parameters where the perturbation theory is applicable, through a
complicated interm... | 1995-04-07 | 2008-02-03 | [
"cond-mat"
] | Alexander O. Gogolin |
cond-mat/9504029 | Criticality of Lamellar Surfaces by Conformational Degrees of freedom | A new model for lamellar surfaces formed by anisotropic molecules is
proposed. The molecules have internal degrees of freedom, associated with their
flexible section of length $N$ at zero temperature. We obtain a 2D non-standard
six vertex model, which is exactly soluble and exhibits a finite order
transition. The orde... | 1995-04-07 | 2009-10-28 | [
"cond-mat"
] | B.Bassetti, G.Mazzoletti and P.Jona |
cond-mat/9504023 | Critical behavior of a fluid in a disordered porous matrix: An
Ornstein-Zernike approach | Using a liquid-state approach based on Ornstein-Zernike equations, we study
the behavior of a fluid inside a porous disordered matrix near the liquid-gas
critical point.The results obtained within various standard approximation
schemes such as lowest-order $\gamma$-ordering and the mean-spherical
approximation suggest ... | 1995-04-06 | 2009-10-28 | [
"cond-mat"
] | E. Pitard, M.L. Rosinberg, G. Stell and G. Tarjus |
cond-mat/9504022 | Sandpile Model on Sierpinski Gasket Fractal | We investigate the sandpile model on the two--dimensional Sierpinski gasket
fractal. We find that the model displays novel critical behavior, and we
analyze the distribution functions of avalanche sizes, lifetimes and topplings
and calculate the associated critical exponents $\tau = 1.51 \pm 0.04$, $\alpha
= 1.63 \pm 0... | 1995-04-06 | 2016-08-15 | [
"cond-mat"
] | Brigita Kutjnak-Urbanc, Stefano Zapperi, Sava Milo\v{s}evi\'c and H.
Eugene Stanley |
cond-mat/9504024 | The $\bf T=0$ $\bf 2k_F$ density wave phase transition in a two
dimensional Fermi liquid is first order | We study $T=0$ spin density wave transitions in two dimensional Fermi liquids
in which the ordering wavevector $\bf Q$ is such that the tangents to the Fermi
line at the points connected by $\bf Q$ are parallel (e.g. $Q=2p_F$ in a system
with a circular Fermi line) and the Fermi line is not flat. We show that the
trans... | 1995-04-06 | 2007-05-23 | [
"cond-mat"
] | B. L. Altshuler, L. B. Ioffe, A. J. Millis |
cond-mat/9504019 | Pseudospin SU(2) Symmetry Breaking, Charge Density Wave and
Superconductivity in the Hubbard Model | In this paper, we discuss physical consequences of pseudospin SU(2) symmetry
breaking in the negative-U Hubbard model at half-filling. If pseudospin
symmetry is spontaneously broken while its unique subgroup U(1) remains
invariant, it will lead to the charge density wave (CDW) ground state.
Furthermore, if the U(1) sym... | 1995-04-05 | 2009-10-28 | [
"cond-mat"
] | S.Q. Shen and X.C. Xie (Oklahoma State University) |
cond-mat/9504014 | Complex random matrix models with possible applications to spin-
impurity scattering in quantum Hall fluids | We study the one-point and two-point Green's functions in a complex random
matrix model to sub-leading orders in the large N limit. We take this complex
matrix models as a model for the two-state scattering problem, as applied to
spin dependent scattering of impurities in quantum Hall fluids. The density of
state shows... | 1995-04-05 | 2009-10-28 | [
"cond-mat"
] | S. Hikami and A. Zee |
cond-mat/9504017 | Drude weight and dc-conductivity of correlated electrons | The Drude weight $D$ and the dc-conductivity $\sigma_{dc} (T)$ of strongly
correlated electrons are investigated theoretically. Analytic results are
derived for the homogeneous phase of the Hubbard model in $d = \infty$
dimensions, and for spinless fermions in this limit with $1/d$-corrections
systematically included t... | 1995-04-05 | 2009-10-28 | [
"cond-mat"
] | G. Uhrig and D. Vollhardt |
cond-mat/9504020 | Phase Transitions in the Symmetric Kondo Lattice Model in Two and Three
Dimensions | We present an application of high-order series expansion in the coupling
constants for the ground state properties of correlated lattice fermion
systems. Expansions have been generated up to order $(t/J)^{14}$ for $d=1$ and
$(t/J)^8$ for $d=2,\ 3$ for certain properties of the symmetric Kondo lattice
model. Analyzing t... | 1995-04-05 | 2009-10-28 | [
"cond-mat"
] | Zhu-Pei Shi, Rajiv R.P. Singh, Martin P. Gelfand and Ziqiang Wang |
cond-mat/9504016 | Interaction-induced delocalization of two particles in a random
potential: Scaling properties | The localization length $\xi_2$ for coherent propagation of two interacting
particles in a random potential is studied using a novel and efficient
numerical method. We find that the enhancement of $\xi_2$ over the one-particle
localization length $\xi_1$ satisfies the scaling relation
$\xi_2/\xi_1=f(u/\Delta_\xi)$, whe... | 1995-04-05 | 2009-10-28 | [
"cond-mat"
] | Felix von Oppen, Tilo Wettig, and Jochen M\"uller |
cond-mat/9504018 | Evidence for a superfluid density in t--J ladders | Applying three independent techniques, we give numerical evidence for a
finite superfluid density in isotropic hole-doped t--J ladders: We show the
existence of anomalous flux quantization, emphasising the contrasting behaviour
to that found in the `Luttinger liquid' regime stabilised at low electron
densities; We cons... | 1995-04-05 | 2019-08-16 | [
"cond-mat"
] | C.A. Hayward, D. Poilblanc, R.M. Noack, D.J. Scalapino, and W. Hanke
(Lab. de Physique Quantique, Universit\'e Paul Sabatier) |
cond-mat/9504015 | Josephson Junction Ladders: Ground State and Relaxation Phenomena | This paper considers a Josephson Junction array with the geometry of a ladder
and anisotropy in the Josephson couplings. The ground state problem for the
ladder corresponds to the one for the one-dimensional chiral XY model in a
two-fold anisotropy field, which allows of a rigorous characterization of the
ground state ... | 1995-04-05 | 2016-08-15 | [
"cond-mat"
] | Juan J. Mazo, Fernando Falo and Luis M. Flor\'ia |
cond-mat/9504011 | Interacting one dimensional electron gas with open boundaries | We discuss the properties of interacting electrons on a finite chain with
open boundary conditions. We extend the Haldane Luttinger liquid description to
these systems and study how the presence of the boundaries modifies various
correlation functions. In view of possible experimental applications to quantum
wires, we ... | 1995-04-04 | 2009-10-28 | [
"cond-mat"
] | M. Fabrizio and Alexander O. Gogolin |
cond-mat/9504008 | Magnetic Properties of High Temperature Superconductors: a Spin Liquid
Approach. Talk given at Stanford Spectroscopy Meeting, 1995. | We argue that strongly correlated two dimensional electrons form a spin
liquid in some regimes of density and temperature and give the theory of the
magnetic properties of this spin liquid using the representation in terms of
femions interacting with a gauge field. This state is characterized by
anomalous power law spi... | 1995-04-04 | 2007-05-23 | [
"cond-mat"
] | L. B. Ioffe and A. J. Millis |
cond-mat/9504009 | Quasiparticle spectrum in a nearly antiferromagnetic Fermi liquid:
shadow and flat bands | We consider a two-dimensional Fermi liquid in the vicinity of a
spin-density-wave transition to a phase with commensurate antiferromagnetic
long-range order. We assume that near the transition, the Fermi surface is
large and crosses the magnetic Brillouin zone boundary. We show that under
these conditions, the self-ene... | 1995-04-04 | 2009-10-28 | [
"cond-mat"
] | Andrey V. Chubukov |
cond-mat/9504013 | Ground state properties and dynamics of the bilayer t-J model | We present an exact diagonalization study of bilayer clusters of t-J model.
Our results indicate a crossover between two markedly different regimes which
occurs when the ratio J_perp/J between inter-layer and intra-layer exchange
constants increases: for small J_perp/J the data suggest the development of 3D
antiferroma... | 1995-04-04 | 2009-10-28 | [
"cond-mat"
] | R. Eder, Y. Ohta, and S. Maekawa (Nagoya & Groningen) |
cond-mat/9504012 | Fokker-Planck approach to quantum lattice Hamiltonians | Fokker-Planck equations have been applied in the past to field theory topics
such as the stochastic quantization and the stabilization of bottomless action
theories. In this paper we give another application of the FP-techniques in a
way appropriate to the study of the ground state, the excited states and the
critical ... | 1995-04-04 | 2016-08-15 | [
"cond-mat",
"hep-th"
] | Fernando Jim\'enez and Germ\'an Sierra |
cond-mat/9504010 | Weak Field Phase Diagram for an Integer Quantum Hall Liquid | We study the localization properties in the transition from a two-dimensional
electron gas at zero magnetic field into an integer quantum Hall (QH) liquid.
By carrying out a direct calculation of the localization length for a finite
size sample using a transfer matrix technique, we systematically investigate
the field ... | 1995-04-04 | 2009-10-28 | [
"cond-mat"
] | D.Z. Liu, X.C. Xie, and Q. Niu |
cond-mat/9504006 | Pedestrian Approach to the Two-Channel Kondo Model | We reformulate the two-channel Kondo model to explicitly remove the
unscattered charge degrees of freedom. This procedure permits us to move the
non-Fermi liquid fixed point to infinite coupling where we can apply a
perturbative strong-coupling expansion. The fixed point Hamiltonian involves a
three-body Majorana zero ... | 1995-04-03 | 2010-02-18 | [
"cond-mat"
] | P. Coleman, L. Ioffe and A. M. Tsvelik |
cond-mat/9504005 | Hall resistance in the hopping regime, a "Hall Insulator"? | The Hall conductivity and resistivity of strongly localized electrons at low
temperatures and at small magnetic fields are obtained. It is found that the
results depend on whether the conductivity or the resistivity tensors are
averaged to obtain the macroscopic Hall resistivity. In the second case the
Hall resistivity... | 1995-04-03 | 2009-10-28 | [
"cond-mat"
] | O. Entin-Wohlman, A.G. Aronov, Y. Levinson, and Y. Imry |
cond-mat/9504002 | Quantum spin chains with quantum group symmetry | We consider actions of quantum groups on lattice spin systems. We show that
if an action of a quantum group respects the local structure of a lattice
system, it has to be an ordinary group. Even allowing weakly delocalized
(quasi-local) tails of the action, we find that there are no actions of a
properly quantum group ... | 1995-04-03 | 2009-10-28 | [
"cond-mat"
] | M. Fannes, B. Nachtergaele, and R.F. Werner |
cond-mat/9504007 | Kinetics of A+B--->0 with Driven Diffusive Motion | We study the kinetics of two-species annihilation, A+B--->0, when all
particles undergo strictly biased motion in the same direction and with an
excluded volume repulsion between same species particles. It was recently shown
that the density in this system decays as t^{-1/3}, compared to t^{-1/4}
density decay in A+B--... | 1995-04-03 | 2009-10-28 | [
"cond-mat"
] | I. Ispolatov, P. L. Krapivsky, and S. Redner (Boston Univ.) |
cond-mat/9504003 | An almost sure large deviation principle for the Hopfield model | We prove a large deviation principle for the finite dimensional marginals of
the Gibbs distribution of the macroscopic `overlap'-parameters in the Hopfield
model in the case where the number of random patterns, $M$, as a function of
the system size $N$ satisfies $\limsup M(N)/N=0$. In this case the rate
function (or fr... | 1995-04-03 | 2007-05-23 | [
"cond-mat"
] | Anton Bovier, V\'eronique Gayrard |
cond-mat/9504004 | Vortices in superconducting films are anyons | We point out that nontrivial quantumstatistics of vortices in planar
superfluid systems has its origin in the Schrodinger equation rather then the
Chern-Simons term. Vortices in superfluid helium films are not anyons because
helium films are compressible. Quantum Hall effect layers admit vortices with
nontrivial statis... | 1995-04-03 | 2008-02-03 | [
"cond-mat",
"hep-th"
] | Jacek Dziarmaga |
cond-mat/9504001 | Ergodicity of quantum cellular automata | We define a class of dynamical maps on the quasi-local algebra of a quantum
spin system, which are quantum analogues of probabilistic cellular automata. We
develop criteria for such a system to be ergodic, i.e., to possess a unique
invariant state. Intuitively, ergodicity obtains if the local transition
operators exhib... | 1995-04-03 | 2009-10-28 | [
"cond-mat"
] | S. Richter and R.F. Werner |
cond-mat/9503175 | Many Body Correlation Corrections to Superconducting Pairing in Two
Dimensions. | We demonstrate that in the strong coupling limit (the superconducting gap
$\Delta$ is as large as the chemical potential $\mu$), which is relevant to the
high-$T_c$ superconductivity, the correlation corrections to the gap and
critical temperature are about 10\% of the corresponding mean field
approximation values. For... | 1995-04-03 | 2009-10-28 | [
"cond-mat"
] | M.Yu. Kuchiev and O. P. Sushkov |
cond-mat/9503174 | Thermodynamic Length, Time, Speed and Optimum Path to Minimize Entropy
Production | In addition to the Riemannian metricization of the thermodynamic state space,
local relaxation times offer a natural time scale, too. Generalizing existing
proposals, we relate {\it thermodynamic} time scale to the standard kinetic
coefficients of irreversible thermodynamics. Criteria for minimum entropy
production in ... | 1995-04-01 | 2008-02-03 | [
"cond-mat"
] | L. Diosi, K. Kulacsy, B. Lukacs, and A. R\'acz |
cond-mat/9503172 | Exact non-equilibrium transport through point contacts in quantum wires
and fractional quantum Hall devices | We have recently calculated exact non-equilibrium quantum transport
properties through a point contact in a Luttinger liquid. Using a particular
quasiparticle basis of the Hilbert space dictated by integrability, we here
compute explicitly the exact $I(V)$ characteristic and conductance out of
equilibrium as a function... | 1995-04-01 | 2009-10-28 | [
"cond-mat"
] | P. Fendley, A.W.W. Ludwig and H. Saleur |
cond-mat/9503167 | Recipes for metastable states in Spin Glasses | In this paper we develop a method introduced by one of us to study metastable
states in spin glasses. We consider a `potential function' defined as the free
energy of a system at a given temperature $T$ constrained to have a fixed
overlap with a reference configuration of equilibrium at temperature $T'$. We
apply the m... | 1995-03-31 | 2009-10-28 | [
"cond-mat"
] | S.Franz and G.Parisi |
cond-mat/9503166 | The structural glass transition and the entropy of the metastable states | The metastable states of a glass are counted by adding a weak pinning field
which explicitly breaks the ergodicity. Their entropy, that is the logarithm of
their number, is extensive in a range of temperatures $T_G < T < T_C$ only,
where $T_G$ and $T_C$ correspond to the ideal calorimetric and kinetic glass
transition ... | 1995-03-31 | 2009-10-28 | [
"cond-mat"
] | R. Monasson |
cond-mat/9503165 | Proof of the Strong Scott Conjecture for Atomic and Molecular Cores | The strong Scott conjecture about the electron density at a distance 1/Z from
an atomic nucleus of charge $Z$ and its generalization for molecules are
proved. The density, suitably scaled, converges to an explicit limiting density
as $Z \to \infty$. Both a weak convergence and a pointwise convergence on
spheres holds. | 1995-03-31 | 2007-05-23 | [
"cond-mat"
] | Alexei Iantchenko, Elliott H. Lieb, Heinz Siedentop |
cond-mat/9503168 | Lifshitz-Slyozov Scaling For Late-Stage Coarsening With An
Order-Parameter-Dependent Mobility | The coarsening dynamics of the Cahn-Hilliard equation with order-parameter
dependent mobility, $\lambda(\phi) \propto (1-\phi^2)^\alpha$, is addressed at
zero temperature in the Lifshitz-Slyozov limit where the minority phase
occupies a vanishingly small volume fraction. Despite the absence of bulk
diffusion for $\alph... | 1995-03-31 | 2009-10-28 | [
"cond-mat"
] | A. J. Bray and C. L. Emmott |
cond-mat/9503169 | Bethe ansatz solution for crossover scaling functions of the asymmetric
XXZ chain and the Karder--Parisi--Zhang-type growth model | A perturbative method is developed to calculate the finite size corrections
of the low lying energies of the asymmetric XXZ hamiltonian near the stochastic
line. The crossover from isotropic to anisotropic, Kardar-Parisi-Zhang (KPZ)
scaling of the mass gaps is determined in terms of universal crossover scaling
function... | 1995-03-31 | 2008-02-03 | [
"cond-mat"
] | Doochul Kim (University of Washington and Seoul National University) |
cond-mat/9503171 | Theory of Second and Higher Order Stochastic Processes | This paper presents a general approach to linear stochastic processes driven
by various random noises. Mathematically, such processes are described by
linear stochastic differential equations of arbitrary order (the simplest
non-trivial example is $\ddot x = R(t)$, where $R(t)$ is not a Gaussian white
noise). The stoch... | 1995-03-31 | 2009-10-28 | [
"cond-mat"
] | Alon Drory |
cond-mat/9503170 | The Computational Complexity of Generating Random Fractals | In this paper we examine a number of models that generate random fractals.
The models are studied using the tools of computational complexity theory from
the perspective of parallel computation. Diffusion limited aggregation and
several widely used algorithms for equilibrating the Ising model are shown to
be highly seq... | 1995-03-31 | 2009-10-28 | [
"cond-mat",
"adap-org",
"nlin.AO"
] | J. Machta and R. Greenlaw |
cond-mat/9503158 | Charge and spin density wave ordering transitions in strongly correlated
metals | We study the quantum transition from a strongly correlated metal, with heavy
fermionic quasiparticles, to a metal with commensurate charge or spin density
wave order. To this end, we introduce and numerically analyze a large
dimensionality model of Ising spins in a transverse field, coupled to two
species of fermions; ... | 1995-03-30 | 2009-10-28 | [
"cond-mat"
] | Subir Sachdev (Yale University) and Antoine Georges (ENS, Paris) |
cond-mat/9503159 | Temperature dependence of surface reconstructions of Au on Pd(110) | Surface reconstructions of Au film on Pd(110) substrate are studied using a
local Einstein approximation to quasiharmonic theory with the Sutton-Chen
interatomic potential. Temperature dependent surface free energies for
different coverages and surface structures are calculated. Experimentally
observed transformations ... | 1995-03-30 | 2009-10-28 | [
"cond-mat",
"mtrl-th"
] | J. A. Nieminen |
cond-mat/9503157 | Are critical finite-size scaling functions calculable from knowledge of
an appropriate critical exponent? | Critical finite-size scaling functions for the order parameter distribution
of the two and three dimensional Ising model are investigated. Within a
recently introduced classification theory of phase transitions, the universal
part of the critical finite-size scaling functions has been derived by
employing a scaling lim... | 1995-03-30 | 2009-10-28 | [
"cond-mat"
] | R. Hilfer and N.B. Wilding |
cond-mat/9503164 | INTERLAYER COUPLING AND THE METAL-INSULATOR TRANSITION IN Pr-SUBSTITUTED
Bi(2)Sr(2)CaCu(2)O(8+y) | Substitution of rare-earth ions for Ca in Bi2Sr2CaCu2O8+y is known to cause a
metal-insulator transition. Using resonant photoemission we study how this
chemical substitution affects the electronic structure of the material. For the
partial Cu-density of states at E_F and in the region of the valence band we
observe no... | 1995-03-30 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | C. Quitmann, B. Beschoten, R. J. Kelley, G. Guentherodt, M. Onellion |
cond-mat/9503162 | Confinement in the Three-dimensional Anisotropic $t$-$J$ Model | The normal-state resistivity of the cuprate superconductors is metallic in
the $ab$ plane but is characteristic of an insulator along the $c$ direction,
leading to the possibility of the remarkable phenomenon of confinement. By
continuity, such a behavior is not expected to occur in a Fermi liquid. We
consider the anis... | 1995-03-30 | 2009-10-28 | [
"cond-mat"
] | Sanjoy K. Sarker |
cond-mat/9503163 | Coarsening in the q-State Potts Model and the Ising Model with Globally
Conserved Magnetization | We study the nonequilibrium dynamics of the $q$-state Potts model following a
quench from the high temperature disordered phase to zero temperature. The time
dependent two-point correlation functions of the order parameter field satisfy
dynamic scaling with a length scale $L(t)\sim t^{1/2}$. In particular, the
autocorr... | 1995-03-30 | 2009-10-28 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Clement Sire (CNRS Toulouse, France), and Satya N. Majumdar (Yale U.) |
cond-mat/9503173 | Protein Folding and Spin Glass | We explicitly show the connection between the protein folding problem and
spin glass transition. This is then used to identify appropriate quantities
that are required to describe the transition. A possible way of observing the
spin glass transition is proposed. | 1995-03-30 | 2015-06-25 | [
"cond-mat",
"q-bio"
] | S. Suresh Rao and Somendra M. Bhattacharjee |
cond-mat/9503160 | Anyons beyond the plane | We consider particles in three-dimensional space, which have a certain
probability to find themselves in a thin layer (``plane''), where they are
assumed to be well described by a planar Hamiltonian and are subject to
Aharonov-Bohm-type interaction. We demonstrate that their planar motion is then
anyonlike, with the ``... | 1995-03-30 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Edouard Gorbar, Stefan Mashkevich, Sergei Sharapov |
cond-mat/9503161 | Decaying Turbulence and the Dynamics of Diffusing Vortices with
Conservation Laws | In this letter, I solve a model for the dynamics of vortices in a decaying
two-dimensional turbulent fluid. The model describes their effective diffusion,
and the merging of pairs of vortices of same vorticity sign, when they get too
close. The merging process is characterized by the conservation of energy and
of the q... | 1995-03-30 | 2008-02-03 | [
"cond-mat",
"ao-sci",
"chao-dyn",
"nlin.CD"
] | Clement Sire (CNRS Toulouse France) |
cond-mat/9503149 | An Electrostatic Model of Split-Gate Quantum Wires | We present a theoretical model of split-gate quantum wires that are
fabricated from GaAs-AlGaAs heterostructures. The model is built on the
physical properties of donors and of semiconductor surfaces, and considerations
of equilibrium in such systems. Based on the features of this model, we have
studied different ioniz... | 1995-03-29 | 2009-10-28 | [
"cond-mat"
] | Yinlong Sun and George Kirczenow (Simon Fraser University, Canada),
Andrew. S. Sachrajda and Yan Feng (Institute of Microstructural Sciences,
NRC, Canada) |
cond-mat/9503155 | Anisotropic Spin Hamiltonians due to Spin-Orbit and Coulomb Exchange
Interactions | This paper contains the details of Phys. Rev. Lett. 73, 2919 (1994) and, to a
lesser extent, Phys. Rev. Lett. 72, 3710 (1994). We treat a Hubbard model which
includes all the 3d states of the Cu ions and the 2p states of the O ions. We
also include spin-orbit interactions, hopping between ground and excited
crystal fie... | 1995-03-29 | 2009-10-28 | [
"cond-mat"
] | T. Yildirim, A. B. Harris, Amnon Aharony, and O. Entin-Wohlman |
cond-mat/9503154 | Momentum dependence of the spin and charge excitations in the two
dimensional Hubbard model | The low energy spin and charge excitations in the 2D Hubbard model near half
filling are analyzed. The RPA spectra derived from inhomoheneous mean field
textures are analyzed. Spin excitations show a commensurate peak at half
filling, incommensurate peaks near half filling, and a broad background typical
of a dilute Fe... | 1995-03-29 | 2009-10-28 | [
"cond-mat"
] | M. P. L\'opez-Sancho, F. Guinea, J. A. Verg\'es and E. Louis |
cond-mat/9503153 | Coupling between planes and chains in YBa2Cu3O7 : a possible solution
for the order parameter controversy | We propose to explain the contradictory experimental evidence about the
symmetry of the order parameter in $YBa_{2}Cu_{3}O_{7} $ by taking into account
the coupling between planes and chains. This leads to an anticrossing of the
plane and chain band. We include an attractive pairing interaction within the
planes and a ... | 1995-03-29 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | R. Combescot and X. Leyronas |
cond-mat/9503156 | New Phases of High Temperature Superconductors in High Magnetic Field | Fluctuation behavior of high temperature superconductors in high magnetic
field is studied within the Ginzburg-Landau theory. Landau level degeneracy of
Cooper pairs enhances fluctuations which destroy the familiar Abrikosov vortex
lattice for D=2,3. Instead, a charge-density wave of Cooper pairs (SCDW) is the
new low-... | 1995-03-29 | 2007-05-23 | [
"cond-mat"
] | Zlatko Tesanovic |
cond-mat/9503152 | Effect of superconducting correlation on the localization of
quasiparticles in low dimensions | Localization lengths of superconducting quasiparticles $\lambda_s$ are
evaluated and compared with the corresponding normal state values $\lambda_n$
in one and two dimensional lattices. The effect of superconducting correlation
on the localization of quasiparticles is generally stronger in an off-site
pairing state tha... | 1995-03-29 | 2009-10-28 | [
"cond-mat"
] | Tao Xiang (Research Centre in Superconductivity, University of
Cambridge, UK) |
cond-mat/9503151 | Exact numerical diagonalization of one-dimensional interacting electrons
nonadiabatically coupled to phonons | We study the role of non-adiabatic Holstein electron-phonon coupling on the
neutral-ionic phase transition of charge transfer crystals which can be tuned
from continuous to discontinuous, using exact numerical diagonalization. The
variation of electronic properties through the transition is smoothed by
nonadiabaticity.... | 1995-03-29 | 2009-10-28 | [
"cond-mat"
] | G.P.Borghi, A.Girlando, A.Painelli (Parma), J.Voit (Bayreuth) |
cond-mat/9503150 | Fermi liquids and non--Fermi liquids | Contents
I. Introduction
II. Fermi Liquids
III. Renormalization group for interacting fermions
IV. Luttinger liquids
V. Transport in a Luttinger liquid
VI. The Bethe ansatz: a pedestrian introduction
VII. Conclusion and outlook | 1995-03-28 | 2008-02-03 | [
"cond-mat"
] | H. J. Schulz |
cond-mat/9503147 | Theory of a Continuous H$_{c2}$ Normal-to-Superconducting Transition | I study the $H_{c2}$ transition within the Ginzburg-Landau model, with
$m$-component order parameter $\psi_i$. I find a renormalized fixed point free
energy, exact in $m\rightarrow\infty$ limit, suggestive of a $2$nd-order
transition in contrast to a general belief of a $1$st-order transition. The
thermal fluctuations ... | 1995-03-28 | 2009-10-28 | [
"cond-mat"
] | Leo Radzihovsky |
cond-mat/9503146 | Orientational Ordering of Polymers on a Fluctuating Flexible Surface | Arguments are presented to the effect that embedding semi-flexible (wormlike)
ideal polymers into a fluctuating, flexible surface leads to an effective
attractive orientational interaction between polymer segments that precipitates
an orientational ordering transition of the polymer chains on the surface even
in the ca... | 1995-03-28 | 2009-10-28 | [
"cond-mat"
] | R.Podgornik (Laboratory of Structural Biology, Division of Computer
Research and Technology, National Institutes of Health, Bethesda, MD) |
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