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/9411112 | Haldane Exclusion Statistics and the Boltzmann Equation | We generalize the collision term in the one-dimensional Boltzmann-Nordheim
transport equation for quasiparticles that obey the Haldane exclusion
statistics. For the equilibrium situation, this leads to the ``golden rule''
factor for quantum transitions. As an application of this, we calculate the
density response funct... | 1994-11-28 | 2008-02-03 | [
"cond-mat",
"hep-ph"
] | R.K. Bhaduri, R.S. Bhalerao and M.V.N. Murthy |
cond-mat/9411113 | Exact clesed form of the return probability on the Bethe lattice | An exact closed form solution for the return probability of a random walk on
the Bethe lattice is given. The long-time asymptotic form confirms a previously
known expression. It is however shown that this exact result reduces to the
proper expression when the Bethe lattice degenerates on a line, unlike the
asymptotic r... | 1994-11-28 | 2009-10-22 | [
"cond-mat"
] | Achille Giacometti |
cond-mat/9411114 | Real Space Renormalization Group for Langevin Dynamics in Absence of
Translational Invariance | A novel exact dynamical real space renormalization group for a Langevin
equation derivable from a Euclidean Gaussian action is presented. It is
demonstrated rigorously that an algebraic temporal law holds for the Green
function on arbitrary structures of infinite extent. In the case of fractals it
is shown on specific ... | 1994-11-28 | 2009-10-22 | [
"cond-mat"
] | Achille Giacometti, Amos Maritan, Flavio Toigo and Jayanth R.Banavar |
cond-mat/9411116 | Gentle Perturbations of the Free Bose Gas I | It is demonstrated that the thermal structure of the noncritical free Bose
Gas is completely described by certain periodic generalized Gaussian stochastic
process or equivalently by certain periodic generalized Gaussian random field.
Elementary properties of this Gaussian stochastic thermal structure have been
establis... | 1994-11-28 | 2009-10-22 | [
"cond-mat"
] | R. Gielerak and R. Olkiewicz |
cond-mat/9411115 | Gauge Theories, Spin Glasses and Real Glasses | In this talk I will show that usual spin glasses are a peculiar kind of
Abelian gauge theory. I will shortly review the techniques used to study them.
At the end I will consider more general models (e.g. spin glasses based on non
Abelian gauge group) and I will discuss the relevance of these models to real
glasses. Fin... | 1994-11-28 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Giorgio Parisi (Dip. Fisica, Univ. Roma La Sapienza) |
cond-mat/9411122 | Quantum Interference of Coulomb Interaction and Disorder: Phase Shift of
Friedel Oscillations and an Instability of the Fermi Sea | We investigate the influence of interference between Coulomb interaction and
impurity scattering on the static electronic response $\chi (0,q)$ in
disordered metals to leading order in the effective Coulomb interaction. When
the transport relaxation time $\tau _{tr}$ is much shorter than the
quasiparticle life time, we... | 1994-11-28 | 2009-10-22 | [
"cond-mat"
] | Johann Kroha, Andrea Huck, and Thilo Kopp |
cond-mat/9411110 | Dual Monte Carlo and Cluster Algorithms | We discuss the development of cluster algorithms from the viewpoint of
probability theory and not from the usual viewpoint of a particular model. By
using the perspective of probability theory, we detail the nature of a cluster
algorithm, make explicit the assumptions embodied in all clusters of which we
are aware, and... | 1994-11-27 | 2009-10-22 | [
"cond-mat"
] | N.Kawashima and J.E.Gubernatis |
cond-mat/9411111 | Gamma phonons and microscopic structure of orthorhombic KNbO3 from
first-principles calculations | {}From a series of total energy calculations by the full-potential linear
muffin-tin orbital method, the total energy hypersurface as function of atomic
displacements from equilibrium positions has been fitted for different Gamma
phonon modes in orthorhombic KNbO3. Frequencies and eigenvectors of all TO
Gamma phonons h... | 1994-11-27 | 2009-10-22 | [
"cond-mat",
"mtrl-th"
] | A.V.Postnikov and G.Borstel |
cond-mat/9411109 | Accurate Estimates of 3D Ising Critical Exponents Using the
Coherent-Anomaly Method | An analysis of the critical behavior of the three-dimensional Ising model
using the coherent-anomaly method (CAM) is presented. Various sources of errors
in CAM estimates of critical exponents are discussed, and an improved scheme
for the CAM data analysis is tested. Using a set of mean-field type
approximations based ... | 1994-11-26 | 2015-06-25 | [
"cond-mat"
] | M.Kolesik and M. Suzuki |
cond-mat/9411108 | The Anderson Model out of equilibrium: Time dependent perturbations | The influence of high-frequency fields on quantum transport through a quantum
dot is studied in the low-temperature regime. We generalize the non crossing
approximation for the infinite-U Anderson model to the time-dependent case. The
dc spectral density shows asymmetric Kondo side peaks due to photon-assisted
resonant... | 1994-11-26 | 2009-10-22 | [
"cond-mat"
] | Matthias H. Hettler and Herbert Schoeller |
cond-mat/9411104 | Charge Transport in Junctions between D-Wave Superconductors | We develop a microscopic analysis of superconducting and dissipative currents
in junctions between superconductors with d-wave symmetry of the order
parameter. We study the proximity effect in such superconductors and show that
for certain crystal orientations the superconducting order parameter can be
essentially supp... | 1994-11-25 | 2009-10-22 | [
"cond-mat"
] | Yu.S.Barash, A.V.Galaktionov, and A.D. Zaikin |
cond-mat/9411106 | Analysis of self--averaging properties in the transport of particles
through random media | We investigate self-averaging properties in the transport of particles
through random media. We show rigorously that in the subdiffusive anomalous
regime transport coefficients are not self--averaging quantities. These
quantities are exactly calculated in the case of directed random walks. In the
case of general symmet... | 1994-11-25 | 2009-10-22 | [
"cond-mat"
] | J.M. Lopez, M.A. Rodriguez and L. Pesquera |
cond-mat/9411107 | Nonequilibrium Phase Transitions in a Driven Sandpile Model | We construct a driven sandpile slope model and study it by numerical
simulations in one dimension. The model is specified by a threshold slope
$\sigma_c\/$, a parameter $\alpha\/$, governing the local current-slope
relation (beyond threshold), and $j_{\rm in}$, the mean input current of sand.
A nonequilibrium phase dia... | 1994-11-24 | 2009-10-22 | [
"cond-mat"
] | Sujan K. Dhar, Rahul Pandit, and Sriram Ramaswamy |
cond-mat/9411101 | Magnetic-Field Dependence of the Localization Length in Anderson
Insulators | Using the conventional scaling approach as well as the renormalization group
analysis in $d=2+\epsilon$ dimensions, we calculate the localization length
$\xi(B)$ in the presence of a magnetic field $B$. For the quasi 1D case the
results are consistent with a universal increase of $\xi(B)$ by a numerical
factor when the... | 1994-11-24 | 2009-10-22 | [
"cond-mat"
] | Igor V. Lerner and Yoseph Imry |
cond-mat/9411102 | Mesoscopic Fluctuations in Models of Classical and Quantum Diffusion | It is shown that the characteristics of the mesoscopic fluctuations in the
conventional quantum-diffusion model and the model of the non-coherent
(`classical') diffusion in media with long-range correlated disorder are quite
similar in the weak-disorder limit. The relative values of the variance and of
the high-order m... | 1994-11-24 | 2007-05-23 | [
"cond-mat"
] | Igor V. Lerner |
cond-mat/9411103 | Two Extended Versions of the Continuous 2D-Heisenberg Model | We analyze two extended versions [the Ishimori model (IM) and a related
system, which will be called modified Ishimori model (mIM)] of the continuous
Heisenberg model in (2+1)-dimensions within the complex Hirota scheme. The IM,
proposed in 1984, is an integrable (2+1)-dimensional topological spin field
model which has... | 1994-11-24 | 2009-10-22 | [
"cond-mat",
"nlin.SI",
"solv-int"
] | E. Alfinito, G. Profilo and G. Soliani |
cond-mat/9411097 | Transition density of diffusion on Sierpinski gasket and extension of
Flory's formula | Some problems related to the transition density u(t,x) of the diffusion on
the Sierpinski gasket are considerd, based on recent rigorous results and
detailed numerical calculations. The main contents are an extension of Flory's
formula for the end-to-end distance exponent of self-avoiding walks on the
fractal spaces, a... | 1994-11-24 | 2009-10-22 | [
"cond-mat",
"hep-lat",
"hep-th"
] | Tetsuya Hattori and Hideo Nakajima |
cond-mat/9411099 | A Self-Consistent Microscopic Theory of Surface Superconductivity | The electronic structure of the superconducting surface sheath in a type-II
superconductor in magnetic fields $H_{c2}<H<H_{c3}$ is calculated
self-consistently using the Bogoliubov-de Gennes equations. We find that the
pair potential $\Delta(x)$ exhibits pronounced Friedel oscillations near the
surface, in marked contr... | 1994-11-23 | 2009-10-22 | [
"cond-mat"
] | Robert J. Troy and Alan T. Dorsey |
cond-mat/9411098 | Equilibrium statistical mechanics of frustrated spin glasses; a survey
of mathematical results | After a rapid introduction to the physical motivations and a succinct
presentation of heuristic results, this survey summarises the main mathematical
results known on the Edwards-Anderson and the Sherrington-Kirkpatrick models of
spin glasses. Although not complete proofs but rather sketches of the relevant
steps and i... | 1994-11-23 | 2007-05-23 | [
"cond-mat",
"hep-lat"
] | Dimitri Petritis |
cond-mat/9411100 | Sliding motion of a two-dimensional Wigner crystal in a strong magnetic
field | We study the sliding state of a two-dimensional Wigner crystal in a strong
magnetic field and a random impurity potential. Using a high-velocity
perturbation theory, we compute the nonlinear conductivity, various correlation
functions, and the interference effects arising in combined AC + DC electric
effects, including... | 1994-11-23 | 2009-10-22 | [
"cond-mat"
] | Xuejun Zhu, P. B. Littlewood, and A. J. Millis |
cond-mat/9411096 | Ground states of integrable quantum liquids | Based on a recently introduced operator algebra for the description of a
class of integrable quantum liquids we define the ground states for all
canonical ensembles of these systems. We consider the particular case of the
Hubbard chain in a magnetic field and chemical potential. The ground states of
all canonical ensem... | 1994-11-22 | 2009-10-22 | [
"cond-mat"
] | J.M.P.Carmelo and N.M.R.Peres |
cond-mat/9411095 | Magnetic Phase Diagram of the Ferromagnetically Stacked Triangular Ising
Antiferromagnet | Histogram Monte-Carlo simulation results are presented for the magnetic-field
-- temperature phase diagram of the Ising model on a stacked triangular lattice
with antiferromagnetic intraplane and ferromagnetic interplane interactions.
Finite-size scaling results for this frustrated system at three points along
the para... | 1994-11-22 | 2015-06-25 | [
"cond-mat"
] | M.L. Plumer, (D\'epartement de Physique, Sherbrooke, Qu\'ebec), A.
Mailhot (INRS-EAU, Ste.-Foy, Qu\'ebec) |
cond-mat/9411090 | Time dependent density functional theory in quantum liquids | The formalism of density functional theory (DFT) can be easily extended to
the time dependent case (TDDFT). However, while in the static case the theory
is well established and is expected to be, at least in principle, an exact
approach for the determination of energy and density profiles of inhomogeneous
systems, the ... | 1994-11-22 | 2007-05-23 | [
"cond-mat"
] | Sandro Stringari |
cond-mat/9411092 | Haldane exclusion statistics and the charge fractionalisation in chiral
bags | It is proposed that the phenomenon of charge fractionalisation of the
spatially confined particle in a topological chiral bag may be interpreted as a
manifestation of the exclusion statistics proposed by Haldane. The fractional
exclusion statistics parameter is just the fractional baryon charge $Q$ of the
particle in t... | 1994-11-22 | 2007-05-23 | [
"cond-mat"
] | R.K.Bhaduri, M.V.N.Murthy and R.Shankar (The Institute of Mathematical
Sciences, Madras) |
cond-mat/9411093 | Phase Ordering of 2D XY Systems Below T_{KT} | We consider quenches in non-conserved two-dimensional XY systems between any
two temperatures below the Kosterlitz-Thouless transition. The evolving systems
are defect free at coarse-grained scales, and can be exactly treated.
Correlations scale with a characteristic length $L(t) \propto t^{1/2}$ at late
times. The aut... | 1994-11-22 | 2009-10-22 | [
"cond-mat"
] | A. D. Rutenberg and A. J. Bray |
cond-mat/9411088 | Proximity and Josephson effects in superconductor - two dimensional
electron gas planar junctions | The DC Josephson effect is theoretically studied in a planar junction in
which a two dimensional electron gas (2DEG) infinite in lateral directions is
in contact with two superconducting electrodes placed on top of the 2DEG. An
energy gap in the excitation spectrum is created in the 2DEG due to the
proximity effect. It... | 1994-11-22 | 2009-10-22 | [
"cond-mat"
] | A. F. Volkov, P. H. C. Magn\'ee, B. J. van Wees, T. M. Klapwijk |
cond-mat/9411094 | Collective Modes of Soliton-Lattice States in Double-Quantum-Well
Systems | In strong perpendicular magnetic fields double-quantum-well systems can
sometimes occur in unusual broken symmetry states which have interwell phase
coherence in the absence of interwell hopping. When hopping is present in such
systems and the magnetic field is tilted away from the normal to the quantum
well planes, a ... | 1994-11-22 | 2016-08-31 | [
"cond-mat"
] | R. Cote, L. Brey, H. Fertig, A. H. MacDonald |
cond-mat/9411089 | Density Functional in Liquid Helium: Recent Applications to Droplets and
Surfaces | We present a new density functional, which is the result of a natural
evolution and improvement of previous density functional theories for liquid
helium. We focus on the key ingredients of the theory, showing how they
determine important predictions concerning inhomogeneous systems. These
predictions turn out to be qu... | 1994-11-22 | 2007-05-23 | [
"cond-mat"
] | Franco Dalfovo, Andrea Lastri, and Sandro Stringari |
cond-mat/9411091 | Stochastic Resonance in Ising Systems | We study by Monte Carlo techniques the evolution of finite two-dimensional
Ising systems in oscillating magnetic fields. The phenomenon of stochastic
resonance is observed. The characteristic peak obtained for the correlation
function between the external field and magnetization, versus the temperature
of the system, i... | 1994-11-22 | 2009-10-22 | [
"cond-mat"
] | Zoltan Neda |
cond-mat/9411084 | Free Thermal Convection Driven by Nonlocal Effects | We report and explain a convective phenomenon observed in molecular dynamics
simulations that cannot be classified either as a hydrodynamics instability nor
as a macroscopically forced convection. Two complementary arguments show that
the velocity field by a thermalizing wall is proportional to the ratio between
the he... | 1994-11-21 | 2009-10-22 | [
"cond-mat",
"chem-ph"
] | Jorge Ibsen, Rodrigo Soto, Patricio Cordero |
cond-mat/9411083 | Dynamic Scaling of Ion-Sputtered Surfaces | We derive a stochastic nonlinear equation to describe the evolution and
scaling properties of surfaces eroded by ion bombardment. The coefficients
appearing in the equation can be calculated explicitly in terms of the physical
parameters characterizing the sputtering process. We find that transitions may
take place bet... | 1994-11-21 | 2009-10-22 | [
"cond-mat",
"adap-org",
"mtrl-th",
"nlin.AO"
] | Rodolfo Cuerno and Albert-Laszlo Barabasi |
cond-mat/9411087 | Multiplet Effects in the Quasiparticle Band Structure of the $f^1-f^2$
Anderson Model | In this paper, we examine the mean field electronic structure of the
$f^1-f^2$ Anderson lattice model in a slave boson approximation, which should
be useful in understanding the physics of correlated metals with more than one
f electron per site such as uranium-based heavy fermion superconductors. We
find that the mult... | 1994-11-21 | 2009-10-22 | [
"cond-mat"
] | B.R. Trees, A.J. Fedro, M.R. Norman |
cond-mat/9411085 | Temperley-Lieb Words as Valence-Bond Ground States | Based on the Temperley--Lieb algebra we define a class of one-dimensional
Hamiltonians with nearest and next-nearest neighbour interactions. Using the
regular representation we give ground states of this model as words of the
algebra. Two point correlation functions can be computed employing the
Temperley--Lieb relatio... | 1994-11-21 | 2010-04-08 | [
"cond-mat",
"hep-th"
] | Peter F Arndt, Thomas Heinzel and C M Yung |
cond-mat/9411082 | Gauge symmetry breaking, collective modes, and boson superconductivity
in the t-J model | A theory of the t-J model in the presence of an external electromagnetic
field is presented. The 1/N expansion for this model in the slave-fermion
representation is developed, and it is shown that all the general properties of
the theory are satisfied in every order of the 1/N expansion separately. A
convenient procedu... | 1994-11-20 | 2009-10-22 | [
"cond-mat"
] | Maxim Raykin |
cond-mat/9411076 | Observation of the Smectic C -- Smectic I Critical Point | We report the first observation of the smectic C--smectic I (C--I) critical
point by Xray diffraction studies on a binary system. This is in confirmity
with the theoretical idea of Nelson and Halperin that coupling to the molecular
tilt should induce hexatic order even in the C phase and as such both C and I
(a tilted ... | 1994-11-18 | 2009-10-22 | [
"cond-mat"
] | S. Krishna Prasad, D.S. Shankar Rao, S.Chandrasekhar, M.E.Neubert and
J.W.Goodby |
cond-mat/9411078 | Fractional Spin for Quantum Hall Effect Quasiparticles | We investigate the issue of whether quasiparticles in the fractional quantum
Hall effect possess a fractional intrinsic spin. The presence of such a spin
$S$ is suggested by the spin-statistics relation $S=\theta/2\pi$, with $\theta$
being the statistical angle, and, on a sphere, is required for consistent
quantization... | 1994-11-18 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | T. Einarsson, S. L. Sondhi, S. M. Girvin, and D. P. Arovas |
cond-mat/9411081 | Monte Carlo with Absorbing Markov Chains: Fast Local Algorithms for Slow
Dynamics | A class of Monte Carlo algorithms which incorporate absorbing Markov chains
is presented. In a particular limit, the lowest-order of these algorithms
reduces to the $n$-fold way algorithm. These algorithms are applied to study
the escape from the metastable state in the two-dimensional square-lattice
nearest-neighbor I... | 1994-11-18 | 2009-10-22 | [
"cond-mat",
"adap-org",
"comp-gas",
"hep-lat",
"nlin.AO",
"nlin.CG"
] | M. A. Novotny |
cond-mat/9411080 | Understanding delocalization in the Continuous Random Dimer model | We propose an explanation of the bands of extended states appearing in random
one dimensional models with correlated disorder, focusing on the Continuous
Random Dimer model [A.\ S\'{a}nchez, E.\ Maci\'a, and F.\ Dom\'\i nguez-Adame,
Phys.\ Rev.\ B {\bf 49}, 147 (1994)]. We show exactly that the transmission
coefficient... | 1994-11-18 | 2009-10-22 | [
"cond-mat"
] | A. Sanchez, F. Dominguez-Adame, G. Berman, and F. Izrailev |
cond-mat/9411079 | NMR relaxation in half-integer antiferromagnetic spin chains | Nuclear relaxation in half-integer spin chains at low temperatures (T << J,
the antiferromagnetic exchange constant) is dominated by dissipation from a gas
of thermally-excited, overdamped, spinons. The universal low temperature
dependence of the relaxation rates $1/T_1$ and $1/T_{2G}$ is computed. | 1994-11-18 | 2009-10-22 | [
"cond-mat"
] | Subir Sachdev (Yale University) |
cond-mat/9411075 | Degeneracy of Multi-Component Quantum Hall States Satisfying Periodic
Boundary Conditions | In systems subject to periodic boundary conditions, Haldane has shown that
states at arbitrary filling fraction possess a degeneracy with respect to
center of mass translations. An analysis is carried out for multi-component
electron systems and extra degeneracies are shown to exist. Their application
to numerical stud... | 1994-11-17 | 2009-10-22 | [
"cond-mat"
] | I. A. McDonald |
cond-mat/9411067 | Hydrodynamic electron flow in high-mobility wires | Hydrodynamic electron flow is experimentally observed in the differential
resistance of electrostatically defined wires in the two-dimensional electron
gas in (Al,Ga)As heterostructures. In these experiments current heating is used
to induce a controlled increase in the number of electron-electron collisions
in the wir... | 1994-11-17 | 2009-10-22 | [
"cond-mat"
] | M. J. M. de Jong and L. W. Molenkamp |
cond-mat/9411072 | Detection of nuclear recoils in prototype dark matter detectors, made
from Al, Sn and Zn Superheated Superconducting Granules | This work is part of an ongoing project to develop a Superheated
Superconducting Granule (SSG) detector for cold dark matter and neutrinos. The
response of SSG devices to nuclear recoils has been explored irradiating SSG
detectors with a 70MeV neutron beam. The aim of the experiment was to test the
sensitivity of Sn, A... | 1994-11-17 | 2011-01-17 | [
"cond-mat",
"hep-ex"
] | M. Abplanalp, C. Berger, G. Czapek, U. Diggelmann, M. Furlan, A.
Gabutti, S. Janos, U. Moser, R. Pozzi, K. Pretzl, K. Schmiemann, D.
Perret-Gallix, B. van den Brandt, J.A. Konter, S. Mango |
cond-mat/9411068 | The interplay between electron-electron interactions and impurities in
one-dimensional rings | The persistent current and charge stiffness of a one-dimensional Luttinger
liquid on a ring threaded by a magnetic flux are calculated by Monte Carlo
simulation. By changing the random impurity potential strength and the
electron-electron interaction, we see a crossover behavior between weak and
strong impurity limits.... | 1994-11-17 | 2009-10-22 | [
"cond-mat"
] | Hiroyuki Mori |
cond-mat/9411070 | Andreev Spectroscopy of Josephson Coupling | It is shown that the low energy spectrum of mesoscopic superconductors
coupled by Josephson interaction can be probed by two-electron tunneling from a
normal electrode. The Andreev reflection in the NS junction of a
normal-superconductor-superconductor double junction (NSS transistor) provides
a unique spectroscopic to... | 1994-11-17 | 2009-10-22 | [
"cond-mat"
] | F.W.J. Hekking, L. I. Glazman, and Gerd Schoen |
cond-mat/9411074 | New Types of Off-Diagonal Long Range Order in Spin-Chains | We discuss new possibilities for Off-Diagonal Long Range Order (ODLRO) in
spin chains involving operators which add or delete sites from the chain. For
the Heisenberg and Inverse Square Exchange models we give strong numerical
evidence for the hidden ODLRO conjectured by Anderson \cite{pwa_conj}. We find
a similar ODLR... | 1994-11-17 | 2009-10-22 | [
"cond-mat"
] | J.C. Talstra, S.P. Strong and P.W. Anderson |
cond-mat/9411066 | Crossover and scaling in a nearly antiferromagnetic Fermi liquid in two
dimensions | We consider two-dimensional Fermi liquids in the vicinity of a quantum
transition to a phase with commensurate, antiferromagnetic long-range order.
Depending upon the Fermi surface topology, mean-field spin-density-wave theory
predicts two different types of such transitions, with mean-field dynamic
critical exponents ... | 1994-11-17 | 2009-10-22 | [
"cond-mat"
] | Subir Sachdev, Andrey V. Chubukov, and Alexander Sokol |
cond-mat/9411069 | Statics and Dynamics of an Interface in a Temperature Gradient | The response and nonconserved dynamics of a two-phase interface in the
presence of a temperature gradient oriented normally to the interface are
considered. Two types of boundary conditions on the order parameter are
considered, and the structure of the effective free energy and the Langevin
equation for the collective... | 1994-11-17 | 2009-10-22 | [
"cond-mat"
] | D. Boyanovsky, D. Jasnow, J. Llambias and F. Takakura |
cond-mat/9411073 | Thomas-Fermi Method For Particles Obeying Generalized Exclusion
Statistics | We use the Thomas-Fermi method to examine the thermodynamics of particles
obeying Haldane exclusion statistics. Specifically, we study
Calogero-Sutherland particles placed in a given external potential in one
dimension. For the case of a simple harmonic potential (constant density of
states), we obtain the exact one-pa... | 1994-11-17 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Diptiman Sen and R. K. Bhaduri |
cond-mat/9411065 | Integrals of motion of the Haldane Shastry Model | In this letter we develop a method to construct all the integrals of motion
of the $SU(p)$ Haldane-Shastry model of spins, equally spaced around a circle,
interacting through a $1/r^2$ exchange interaction. These integrals of motion
respect the Yangian symmetry algebra of the Hamiltonian. | 1994-11-17 | 2009-10-22 | [
"cond-mat"
] | J.C. Talstra and F.D.M. Haldane |
cond-mat/9411071 | Symmetries and Mean-Field Phases of the Extended Hubbard Model | The two-dimensional extended Hubbard model that includes a nearest- neighbor
Heisenberg interaction is studied using a mean-field theory where
quasiparticles are defined by an U(8) group of canonical transformations. The
theory is a generalization of the ordinary BCS theory, and Balian and
Werthamer's theory of He-3 th... | 1994-11-17 | 2009-10-22 | [
"cond-mat",
"supr-con"
] | A.B. Eriksson, T. Einarsson and S. Ostlund |
cond-mat/9411058 | Phi^4 Kinks: Statistical Mechanics | Some recent investigations of the thermal equilibrium properties of kinks in
a $1+1$-dimensional, classical $\Phi^4$ field theory are reviewed. The
distribution function, kink density, correlation function, and certain
thermodynamic quantities were studied both theoretically and via large scale
simulations. A simple do... | 1994-11-16 | 2007-05-23 | [
"cond-mat"
] | Salman Habib |
cond-mat/9411062 | New tests of random numbers for simulations in physical systems | The aim of this Thesis is to present five new tests for random numbers, which
are widely used {\em e.g.} in computer simulations in physics applications. The
first two tests, the cluster test and the autocorrelation test, are based on
analogies to the two-dimensional Ising model. The next two, the random walk
test and ... | 1994-11-16 | 2008-02-03 | [
"cond-mat",
"comp-gas",
"hep-lat",
"nlin.CG"
] | I. Vattulainen |
cond-mat/9411063 | Does the attractive Hubbard model support larger persistent currents
than the repulsive one ? | We consider a one-dimensional Hubbard model in the presence of disorder. We
compute the charge stiffness for a mesoscopic ring, as a function of the size
$L$, which is a measure of the permanent currents. We find that for finite
disorder the permanent currents of the system with repulsive interactions are
larger than t... | 1994-11-16 | 2009-10-22 | [
"cond-mat"
] | T. Giamarchi and B.S. Shastry |
cond-mat/9411064 | Superconductivity in an exactly solvable Hubbard model with bond-charge
interaction | The Hubbard model with an additional bond-charge interaction $X$ is solved
exactly in one dimension for the case $t=X$ where $t$ is the hopping amplitude.
In this case the number of doubly occupied sites is conserved. In the sector
with no double occupations the model reduces to the $U=\infty$ Hubbard model.
In arbitra... | 1994-11-16 | 2009-10-22 | [
"cond-mat",
"hep-th",
"nlin.SI",
"solv-int",
"supr-con"
] | Andreas Schadschneider |
cond-mat/9411057 | Influence of gauge-field fluctuations on composite fermions near the
half-filled state | Taking into account the transverse gauge field fluctuations, which interact
with composite fermions, we examine the finite temperature compressibility of
the fermions as a function of an effective magnetic field $\Delta B = B - 2 n_e
hc/e$ ($n_e$ is the density of electrons) near the half-filled state. It is
shown that... | 1994-11-16 | 2009-10-22 | [
"cond-mat"
] | Yong Baek Kim, Patrick A. Lee, Xiao-Gang Wen, and P. C. E. Stamp |
cond-mat/9411059 | Functional Integrals for Correlated Fermions | Functional integral methods provide a way to define mean--field theories and
to systematically improve them. For the Hubbard model and similar
strong--correlation problems, methods based in particular on the
Hubbard--Stratonovich transformation have however been plagued by difficulties
to formulate the problem in a spi... | 1994-11-16 | 2009-10-22 | [
"cond-mat"
] | H.J. Schulz |
cond-mat/9411061 | Orthorhombic distortions may reconcile all the experimental data on YBCO | A lot of controversy appeared recently in measurements of different
properties of High-$T_c$-superconductor YBCO. A part of data supports d-wave
hypothesis whereas other one contradicts it. We suggest to reconcile visibly
controversial experimental data by an assumption that orthorombicity is not
small for electronic p... | 1994-11-16 | 2007-05-23 | [
"cond-mat"
] | V.L.Pokrovsky |
cond-mat/9411060 | Correlation energy of fractional-quantum-Hall-effect systems of
composite fermions | We find the RPA correlation energy and collective modes of the systems of
composite fermions corresponding to the fillings of $1/3$, $1/5$, $2/5$ in the
fractional quantum Hall effect. It is verified that transmutations to composite
fermions do not change the ground-state energy. | 1994-11-16 | 2015-06-25 | [
"cond-mat"
] | P.Sitko and L.Jacak |
cond-mat/9411054 | Self-organized criticality and synchronization in a lattice model of
integrate-and-fire oscillators | We introduce two coupled map lattice models with nonconservative interactions
and a continuous nonlinear driving. Depending on both the degree of
conservation and the convexity of the driving we find different behaviors,
ranging from self-organized criticality, in the sense that the distribution of
events (avalanches) ... | 1994-11-15 | 2009-10-22 | [
"cond-mat",
"adap-org",
"nlin.AO"
] | A. Corral, C.J. Perez, A. Diaz-Guilera, A. Arenas |
cond-mat/9411056 | How Phase-Breaking Affects Quantum Transport Through Chaotic Cavities | We investigate the effects of phase-breaking events on electronic transport
through ballistic chaotic cavities. We simulate phase-breaking by a fictitious
lead connecting the cavity to a phase-randomizing reservoir and introduce a
statistical description for the total scattering matrix, including the
additional lead. F... | 1994-11-15 | 2009-10-22 | [
"cond-mat"
] | Harold U. Baranger and Pier A. Mello |
cond-mat/9411055 | Monte Carlo Simulations of Off-Lattice Polymers | We point out that a newly introduced recursive algorithm for lattice polymers
has a much wider range of applicability. In particular, we apply it to the
simulation of off-lattice polymers with Lennard-Jones potentials between
non-bonded monomers and either delta or harmonic potentials between bonded
monomers. Our algor... | 1994-11-15 | 2009-10-22 | [
"cond-mat"
] | Peter Grassberger and Rainer Hegger |
cond-mat/9411105 | Finite Size Correction In A Disordered System - A New Divergence | We show that the amplitude of the finite size correction term for the $n$th
moment of the partition function, for randomly interacting directed polymers,
diverges (on the high temperature side) as $(n_c - n)^{-r}$, as a critical
moment $n_c$ is approached. The exponent $r$ is independent of temperature but
does depend ... | 1994-11-15 | 2009-10-22 | [
"cond-mat"
] | Somendra M. Bhattacharjee and Sutapa Mukherji |
cond-mat/9411051 | $XXZ$ model as effective Hamiltonian for generalized Hubbard models with
broken $\eta$-symmetry | We consider the limit of strong Coulomb attraction for generalized Hubbard
models with $\eta$-symmetry. In this limit these models are equivalent to the
ferromagnetic spin-1/2 Heisenberg quantum spin chain. In order to study the
behaviour of the superconducting phase in the electronic model under
perturbations which br... | 1994-11-14 | 2009-10-22 | [
"cond-mat",
"hep-th",
"nlin.SI",
"solv-int"
] | G. Albertini, V.E. Korepin, and A. Schadschneider |
cond-mat/9411053 | Spin-Glass: An Unfinished Story | In this work a short overview of the development of spin glass theories,
mainly long and short range Ising models, are presented. | 1994-11-14 | 2007-05-23 | [
"cond-mat"
] | J.R.L. de Almeida and S.Coutinho |
cond-mat/9411052 | The Non-Commutative Geometry of the Quantum Hall Effect | We give an overview of the Integer Quantum Hall Effect. We propose a
mathematical framework using Non-Commutative Geometry as defined by A. Connes.
Within this framework, it is proved that the Hall conductivity is quantized and
that plateaux occur when the Fermi energy varies in a region of localized
states. | 1994-11-14 | 2009-10-22 | [
"cond-mat"
] | J. Bellissard, A. van Elst, H. Schulz-Baldes |
cond-mat/9411049 | Renormalization Group Approach to the Coulomb Pseudopotential for C_{60} | A numerical renormalization group technique recently developed by one of us
is used to analyse the Coulomb pseudopotential (${\mu^*}$) in ${{\rm C}_{60}}$
for a variety of bare potentials. We find a large reduction in ${\mu^*}$ due to
intraball screening alone, leading to an interesting non-monotonic dependence
of ${\m... | 1994-11-13 | 2009-10-22 | [
"cond-mat"
] | Nikos Berdenis and Ganpathy Murthy |
cond-mat/9411047 | Effective Lagrangians for BCS Superconductors at T=0 | We show that the low frequency, long wavelength dynamics of the phase of the
pair field for a BCS-type s-wave superconductor at T=0 is equivalent to that of
a time-dependent non-linear Schr\"odinger Lagrangian (TDNLSL), when terms
required by Galilean invariance are included. If the modulus of the pair field
is also al... | 1994-11-12 | 2009-10-22 | [
"cond-mat"
] | I.R. Aitchison, P. Ao, D.J. Thouless, and X.-M. Zhu |
cond-mat/9411048 | Glassy Roughness of a Crystalline Surface Upon a Disordered Substrate | The discrete Gaussian model for the surface of a crystal deposited on a
disordered substrate is studied by Monte Carlo simulations. A continuous
transition is found from a phase with a thermally-induced roughness to a glassy
one in which the roughness is driven by the disorder. The behavior of the
height-height correla... | 1994-11-12 | 2009-10-22 | [
"cond-mat"
] | D. Cule and Y. Shapir |
cond-mat/9411046 | Critical behaviour of the Random--Bond Ashkin--Teller Model, a
Monte-Carlo study | The critical behaviour of a bond-disordered Ashkin-Teller model on a square
lattice is investigated by intensive Monte-Carlo simulations. A duality
transformation is used to locate a critical plane of the disordered model. This
critical plane corresponds to the line of critical points of the pure model,
along which cri... | 1994-11-11 | 2009-10-22 | [
"cond-mat"
] | S. Wiseman, and E. Domany |
cond-mat/9411050 | Many-body and Covalence Effects in the Polarization of Ferroelectric
Perovskites | The ferroelectric polarization of perovskite oxides is much larger than
implied by displacement of static ionic charges. We use an explicitly
correlated scheme to investigate the phenomenon; charge transport is evaluated
as a geometric quantum phase. Both covalence and electron-electron interaction
enhance polarization... | 1994-11-11 | 2012-07-07 | [
"cond-mat",
"mtrl-th"
] | R. Resta and S. Sorella (SISSA, Trieste, Italy) |
cond-mat/9411044 | Long-Range Correlation of Electron Pairs in the Hubbard Model at Finite
Temperatures in Three Dimensions | We show that in the translation invariant case and in the antiferromagnetic
phase, the reduced density matrix $\rho _2$ has no off-diagonal long-range
order of on-site electron pairs for the single-band Hubbard model on a cubic
lattice away from half filling at finite temperatures both for the positive
coupling and for... | 1994-11-11 | 2009-10-22 | [
"cond-mat"
] | Gang Su and Bao-Heng Zhao |
cond-mat/9411045 | Growth Kinetics for a System with Conserved Order Parameter: Off
Critical Quenches | The theory of growth kinetics developed previously is extended to the
asymmetric case of off-critical quenches for systems with a conserved scalar
order parameter. In this instance the new parameter $M$, the average global
value of the order parameter, enters the theory. For $M=0$ one has critical
quenches, while for s... | 1994-11-11 | 2009-10-22 | [
"cond-mat"
] | G.F. Mazenko and R. A. Wickham |
cond-mat/9411043 | Specific Heat of a Three Dimensional Metal Near a T=0 Magnetic
Transition with Dynamic Exponent z=2,3,4 | We derive expressions for the universal contribution to the specific heat of
a three-dimensional metal near a zero-temperature phase transition with dynamic
exponent $z=2,3$, or 4. The results allow a quantitative comparison of theory
to data. We illustrate the application of our results by analyzing data for
Ce$_{1-x}... | 1994-11-10 | 2009-10-22 | [
"cond-mat"
] | U. Zuelicke and A. J. Millis |
cond-mat/9411042 | Two-Dimensional t-J Model at Low Electron Density | The phase diagram of the two-dimensional t-J model is determined accurately
at low electron density by a combination of analytic and numerical techniques.
The ground state exhibits three phases in the limit of zero electron density:
an unpaired state at small J/t, a gas of s-wave pairs for 2 < J/t < 3.4367, and
a phase... | 1994-11-10 | 2009-10-22 | [
"cond-mat",
"supr-con"
] | C. Stephen Hellberg and Efstratios Manousakis |
cond-mat/9411040 | Zeros of the partition function for a continuum system at first order
transitions | We extend the circle theorem on the zeros of the partition function to a
continuum system. We also calculate the exact zeros of the partition function
for a finite system where the probability distribution for the order parameter
is given by two asymmetric Gaussian peaks. For the temperature driven first
order transiti... | 1994-11-10 | 2007-05-23 | [
"cond-mat",
"hep-lat"
] | Koo-Chul Lee |
cond-mat/9411041 | On chiral Hubbard model and the chiral Kondo lattice model | The integrability of the one dimensional chiral Hubbard model is discussed in
the limit of strong interaction, U=+\infty. The system is shown to be
integrable in sense of existence of an infinite number of constants of motion.
The system is related to a chiral Kondo lattice model at strong interaction
J=+\infty | 1994-11-10 | 2008-02-03 | [
"cond-mat",
"hep-th"
] | D. F. Wang and C. Gruber |
cond-mat/9411036 | One-Dimensional Statistical Mechanics for Identical Particles : The
Calogero and Anyon Cases | The thermodynamic of particles with intermediate statistics interpolating
between Bose and Fermi statistics is adressed in the simple case where there is
one quantum number per particle. Such systems are essentially one-dimensional.
As an illustration, one considers the anyon model restricted to the lowest
Landau level... | 1994-11-09 | 2015-06-25 | [
"cond-mat"
] | Alain Dasni\`eres de Veigy and St\'ephane Ouvry (Division de Physique
Th\'eorique, Unit\'e de Recherche des Universit\a'es Paris 11 et Paris 6
associ\'ee au CNRS, Orsay) |
cond-mat/9411038 | Dynamics of Surface Roughening with Quenched Disorder | We study the dynamical exponent $z$ for the directed percolation depinning
(DPD) class of models for surface roughening in the presence of quenched
disorder. We argue that $z$ for $(d+1)$ dimensions is equal to the exponent
$d_{\rm min}$ characterizing the shortest path between two sites in an
isotropic percolation clu... | 1994-11-09 | 2009-10-22 | [
"cond-mat"
] | S. Havlin, L.A.N. Amaral, S.V. Buldyrev, S.T. Harrington, and H.E.
Stanley (Center for Polymer Studies and Dept. of Physics, Boston University,
Boston, MA, USA) |
cond-mat/9411039 | Iterated Moire Maps and Braiding of Chiral Polymer Crystals | In the hexagonal columnar phase of chiral polymers a bias towards cholesteric
twist competes with braiding along an average direction. When the chirality is
strong, screw dislocations proliferate, leading to either a tilt grain boundary
phase or a new "moire state" with twisted bond order. Polymer trajectories in
the p... | 1994-11-09 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Randall D. Kamien and David R. Nelson |
cond-mat/9411035 | Integrable models of interacting quantum spins with competing
interactions | We present a class of exactly solvable quantum spin models which consist of
two Heisenberg-subsystems coupled via a long-range Lieb-Mattis interaction. The
total system is exactly solvable whenever the individual subsystems are
solvable and allows to study the effects of frustration. We consider (i) the
antiferromagnet... | 1994-11-09 | 2009-10-22 | [
"cond-mat"
] | Johannes Richter, Sven E. Kr\"uger, Andreas Voigt and Claudius Gros |
cond-mat/9411037 | Exact Exponent $\lambda$ of the Autocorrelation Function for a Soluble
Model of Coarsening | The exponent $\lambda$ that describes the decay of the autocorrelation
function $A(t)$ in a phase ordering system, $A(t) \sim L^{-(d-\lambda)}$, where
$d$ is the dimension and $L$ the characteristic length scale at time $t$, is
calculated exactly for the time-dependent Ginzburg-Landau equation in $d=1$. We
find $\lambd... | 1994-11-09 | 2009-10-22 | [
"cond-mat"
] | A. J. Bray and B. Derrida |
cond-mat/9411034 | Anderson-Hubbard Model in $d = \infty$ | We present a detailed, quantitative study of the competition between
interaction- and disorder-induced effects in electronic systems. For this the
Anderson-Hubbard model with diagonal disorder is investigated analytically and
by Quantum Monte Carlo techniques in the limit of infinite spatial dimensions
at half filling.... | 1994-11-08 | 2007-05-23 | [
"cond-mat"
] | M. Ulmke, V. Janis, and D. Vollhardt |
cond-mat/9411033 | On Long-Range Order in Low-Dimensional Lattice-Gas Models of Nematic
Liquid Crystals | The problem of the orientational ordering transition for lattice-gas models
of liquid crystals is discussed in the low-dimensional case $d=1,2$. For
isotropic short-range interactions, orientational long-range order at finite
temperature is excluded for any packing of molecules on the lattice $Z^d$; on
the other hand, ... | 1994-11-08 | 2009-10-22 | [
"cond-mat"
] | N. Angelescu, S. Romano, V.A. Zagrebnov |
cond-mat/9411031 | Infrared and Raman Evidence for Dimers and Polymers in Rb1C60 | The infrared- and Raman-active vibrational modes of C60 were measured in the
various structural states of Rb1C60. According to earlier studies, Rb1C60 has
an $fcc$ structure at temperatures above ~100C, a linear chain polymer
orthorhombic structure when slowly cooled, and an as yet undetermined structure
when very rapi... | 1994-11-07 | 2009-10-22 | [
"cond-mat",
"chem-ph"
] | Michael C. Martin, Daniel Koller, A. Rosenberg, C. Kendziora, and L.
Mihaly (SUNY at Stony Brook and Naval Research Laboratory) |
cond-mat/9411032 | Vibrational Study of 13C-enriched C60 Crystals | The infrared (IR) spectrum of solid C60 exhibits many weak vibrational modes.
Symmetry breaking due to 13C isotopes provides a possible route for optically
activating IR-silent vibrational modes. Experimental spectra and a
semi-empirical theory on natural abundance and 13C-enriched single crystals of
C60 are presented.... | 1994-11-07 | 2009-10-22 | [
"cond-mat"
] | Michael C. Martin, J. Fabian, J. Godard, P. Bernier, J.M. Lambert, and
L. Mihaly (State Univ of New York at Stony Brook, Universite Paris-Sud Orsay,
and Universite des Sciences et Techniques du Languedoc, Montpellier) |
cond-mat/9411030 | Local critical behaviour at aperiodic surface extended perturbation in
the Ising quantum chain | The surface critical behaviour of the semi--infinite one--dimensional quantum
Ising model in a transverse field is studied in the presence of an aperiodic
surface extended modulation. The perturbed couplings are distributed according
to a generalized Fredholm sequence, leading to a marginal perturbation and
varying sur... | 1994-11-07 | 2016-08-14 | [
"cond-mat",
"hep-th"
] | Dragi Karevski, G\'abor Pal\'agyi and Lo\"ic Turban |
cond-mat/9411029 | Universal Fluctuation of the Hall Conductance in the Random Magnetic
Field | We show that the RMS fluctuation of the antisymmetric part of the Hall
conductance of a planar mesoscopic metal in a random magnetic field with zero
average is universal, of the order of $e^2/h$, independent of the amplitude of
the random magnetic field and the diffusion coefficient even in the weak field
limit. This q... | 1994-11-06 | 2009-10-22 | [
"cond-mat"
] | K. Chaltikian, L. Pryadko and S. C. Zhang |
cond-mat/9411027 | Exciton effects in soliton and bipolaron lattice states of doped
electron-phonon Peierls systems | Exciton effects on soliton and bipolaron lattice states are investigated
using an electron-lattice Peierls model with long-range Coulomb interactions.
The Hartree-Fock (HF) approximation and the single-excitation configuration-
interaction (single-CI) method are used to obtain optical absorption spectra.
We discuss the... | 1994-11-05 | 2007-05-23 | [
"cond-mat",
"chem-ph",
"mtrl-th"
] | Kikuo Harigaya, Yukihiro Shimoi, and Shuji Abe |
cond-mat/9411025 | Off-Diagonal Long-Range Order: Meissner Effect and Flux Quantization | There has been a proof by Sewell that the hypothesis of off-diagonal
long-range order in the reduced density matrix $\rho _2$ implies the Meissner
effect. We present in this note an elementary and straightforward proof that
not only the Meissner effect but also the property of magnetic flux
quantization follows from th... | 1994-11-05 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | H.T. Nieh, Gang Su and Bao-Heng Zhao |
cond-mat/9411028 | Quantum Waveguide Transport in Serial Stub and Loop Structures | We have studied the quantum transmission properties of serial stub and loop
structures. Throughout we have considered free electron networks and the
scattering arises solely due to the geometric nature of the problem. The band
formation in these geometric structures is analyzed and compared with the
conventional period... | 1994-11-05 | 2007-05-23 | [
"cond-mat"
] | P. Singha Deo and A. M. Jayannavar |
cond-mat/9411021 | On the Critical Behavior of the Uniform Susceptibility of a Fermi Liquid
Near an Antiferromagnetic Transition with Dynamic Exponent $ z = 2$ | We compute the leading behavior of the uniform magnetic susceptibility,
$\chi$, of a Fermi liquid near an antiferromagnetic transition with dynamic
exponent $z=2$. Our calculation clarifies the role of triangular ``anomaly''
graphs in the theory and justifies the effective action used in previous work
\cite{Hertz}. We ... | 1994-11-04 | 2009-10-22 | [
"cond-mat"
] | L. B. Ioffe and A. J. Millis |
cond-mat/9411026 | Improved Treatment of Frequency Sums in Propagator-Renormalized
Perturbation Theories | We present a massively parallel algorithm for calculating the self-energy in
self-consistent finite temperature perturbation theory for lattice models. The
algorithm uses analytic functions with appropriate asymptotic high frequency
behavior and fast Fourier transforms to accurately calculate the self-energy at
low-fre... | 1994-11-04 | 2007-05-23 | [
"cond-mat"
] | J.J. Deisz (1), D.W. Hess (2), and J.W. Serene (1) ((1) Department of
Physics, Georgetown University (2) Complex Systems Theory Branch, Naval
Research Laboratory) |
cond-mat/9411024 | Two-dimensional electron transport in the presence of magnetic flux
vortices | We have considered the conductivity properties of a two dimensional electron
gas (2DEG) in two different kinds of inhomogeneous magnetic fields, i.e. a
disordered distribution of magnetic flux vortices, and a periodic array of
magnetic flux vortices. The work falls in two parts. In the first part we show
how the phase ... | 1994-11-04 | 2009-10-22 | [
"cond-mat"
] | Mads Nielsen and Per Hedegaard |
cond-mat/9411023 | Solution of the Boltzmann equation in a random magnetic field | A general framework for solving the Boltzmann equation for a 2-dimensional
electron gas (2DEG) in random magnetic fields is presented, when the random
fields are included in the driving force. The formalism is applied to some
recent experiments, and a possible extension to composite fermions at $\nu=1/2$
is discussed. | 1994-11-04 | 2009-10-22 | [
"cond-mat"
] | Per Hedegard and Anders Smith |
cond-mat/9411018 | Shadow Bands in the Cuprates | A consequence of strong antiferromagnetic correlations in models of high-Tc
cuprates is the appearance in photoemission (PES) calculations of considerable
more weight above the Fermi momentum ${\rm {\bf p}_F }$ than expected for
non-interacting electrons. This effect, first discussed by Kampf and Schrieffer
(Phys. Rev.... | 1994-11-04 | 2007-05-23 | [
"cond-mat"
] | Stephan Haas, Adriana Moreo, and Elbio Dagotto (National High Magnetic
Field Lab, Florida State University) |
cond-mat/9411017 | Monte Carlo Studies of Ising Spin Glasses and Random Field Systems | We review recent numerical progress in the study of finite dimensional
strongly disordered magnetic systems like spin glasses and random field
systems. In particular we report in some details results for the critical
properties and the non-equilibrium dynamics of Ising spin glasses. Furthermore
we present an overview o... | 1994-11-03 | 2016-11-03 | [
"cond-mat",
"hep-lat"
] | H. Rieger |
cond-mat/9411020 | Mesoscopic Spin-Magnetism | We investigate the spin-magnetism of mesoscopic metallic grains. In the
average response of an ensemble of grains there are corrections to macroscopic
behaviour due to both spectral fluctuations and electron-electron interactions.
These corrections are a non-linear function of the magnetic field. Their
temperature depe... | 1994-11-03 | 2009-10-22 | [
"cond-mat"
] | H. Mathur, M. Gokcedag and A. Douglas Stone |
cond-mat/9411019 | Global fluctuation formulas and universal correlations for random
matrices and log-gas systems at infinite density | It is shown how the universal correlation function of Brezin and Zee, and
Beenakker, for random matrix ensembles of Wigner-Dyson type with density
support on a finite interval can be derived using a linear response argument
and macroscopic electrostatics. The analogous formula for ensembles of unitary
random matrices i... | 1994-11-03 | 2009-10-22 | [
"cond-mat"
] | P.J. Forrester |
cond-mat/9411016 | Comment on ``Theory of Spinodal Decomposition'' | I comment on a paper by S. B. Goryachev [PRL vol 72, p.1850 (1994)] that
presents a theory of non-equilibrium dynamics for scalar systems quenched into
an ordered phase. Goryachev incorrectly applies only a global conservation
constraint to systems with local conservation laws. | 1994-11-03 | 2009-10-22 | [
"cond-mat"
] | A. D. Rutenberg |
cond-mat/9411013 | Concentration and energy fluctuations in a critical polymer mixture | A semi-grand-canonical Monte Carlo algorithm is employed in conjunction with
the bond fluctuation model to investigate the critical properties of an
asymmetric binary (AB) polymer mixture. By applying the equal peak-weight
criterion to the concentration distribution, the coexistence curve separating
the A-rich and B-ri... | 1994-11-02 | 2009-10-22 | [
"cond-mat"
] | M. Mueller and N. B. Wilding |
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