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/9509064 | Effects of screening on the Hofstadter butterfly | We study, within the Hartree approximation, the effects of the
electron-electron interaction on the energy spectrum of a two-dimensional
electron gas in a perpendicular homogeneous magnetic field and a lateral
superlattice potential with square symmetry. Due to the strong screening
effects, the bandwidth of the Landau ... | 1995-09-12 | 2007-05-23 | [
"cond-mat"
] | Vidar Gudmundsson (Science Institute, University of Iceland) and Rolf
R. Gerhardts (Max-Planck-Institut fuer Festkoerperforschung, Stuttgart) |
cond-mat/9509065 | Optical absorption in the strong coupling limit of Eliashberg theory | We calculate the optical conductivity of superconductors in the
strong-coupling limit. In this anomalous limit the typical energy scale is set
by the coupling energy, and other energy scales such as the energy of the
bosons mediating the attraction are negligibly small. We find a universal
frequency dependence of the o... | 1995-09-12 | 2009-10-28 | [
"cond-mat"
] | R. Combescot, O. V. Dolgov, D. Rainer and S.V. Shulga |
cond-mat/9509068 | Thermal transport in a Luttinger liquid | We study thermal transport in a one-dimensional (1d) interacting electron
gas, employing the Luttinger liquid model. Both thermal conductance and
thermopower are analyzed for a pure 1d gas and with impurities. The universal
ratio of electrical to thermal conductance in a Fermi-liquid - the
Wiedeman-Franz law - is modif... | 1995-09-12 | 2009-10-28 | [
"cond-mat"
] | C.L. Kane, Matthew P.A. Fisher |
cond-mat/9509054 | Two-dimensional conformal field theory for disordered systems at
criticality | Using a Kac-Moody current algebra with $U(1/1)\times U(1/1)$ graded symmetry,
we describe a class of (possibly disordered) critical points in two spatial
dimensions. The critical points are labelled by the triplets $(l,m,k^{\ }_j)$,
where $l$ is an odd integer, $m$ is an integer, and $k^{\ }_j$ is real. For
most such c... | 1995-09-11 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Christopher Mudry, Claudio Chamon, and Xiao-Gang Wen |
cond-mat/9509056 | Spin Glass and Antiferromagnetic Behaviour in a Diluted fcc
Antiferromagnet | We report on a Monte Carlo study of a diluted Ising antiferromagnet on a fcc
lattice. This is a typical model example of a highly frustrated
antiferromagnet, and we ask, whether sufficient random dilution of spins does
produce a spin glass phase. Our data strongly indicate the existence of a spin
glass transition for s... | 1995-09-11 | 2009-10-28 | [
"cond-mat"
] | C. Wengel, C.L. Henley, A. Zippelius |
cond-mat/9509059 | Macroscopic Equation of Motion in Inhomogeneous media | The dynamical evolution of a Brownian particle in an inhomogeneous medium
with spatially varying friction and temperature field is important to
understand conceptually. It requires to address the basic problem of relative
stability of states in nonequilibrium systems which has been a subject of
debate for over several ... | 1995-09-11 | 2007-05-23 | [
"cond-mat"
] | A.M. Jayannavar and Mangal C. Mahato |
cond-mat/9509053 | Analysis of atomic-orbital basis sets from the projection of plane-wave
results | The projection of the eigenfunctions obtained in standard plane-wave
first-principle calculations is used for analyzing atomic-orbital basis sets.
The "spilling" defining the error in such a projection allows the evaluation of
the quality of an atomic-orbital basis set for a given system and its
systematic variational ... | 1995-09-11 | 2009-10-28 | [
"cond-mat",
"mtrl-th"
] | Daniel Sanchez-Portal, Emilio Artacho, and Jose M. Soler |
cond-mat/9509057 | Passive scalars, random flux, and chiral phase fluids | We study the two-dimensional localization problem for (i) a classical
diffusing particle advected by a quenched random mean-zero vorticity field, and
(ii) a quantum particle in a quenched random mean-zero magnetic field. Through
a combination of numerical and analytic techniques we argue that both systems
have extended... | 1995-09-11 | 2009-10-28 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Jonathan Miller and Jane Wang (James Franck Institute, University of
Chicago) |
cond-mat/9509058 | Synchronized First-Passages in a Double-Well System | We perform Langevin dynamic numerical simulation on a double-well potential
system subjected to an asymmetric saw-tooth type external time varying field
and white noise forces. The hysteresis loss calculated from the first-passage
time distribution obtained shows asymmetric behaviour with respect to the
asymmetry in th... | 1995-09-11 | 2007-05-23 | [
"cond-mat"
] | Mangal C. Mahato and A.M. Jayannavar |
cond-mat/9509055 | The Role of Boundary Conditions in the Real-Space Renormalization Group | We show that the failure of the real-space RG method in the 1D tight-binding
model is not intrinsic to the method as considered so far but depends on the
choice of boundary conditions. For fixed BC's the failure does happen. For free
BC's we present a new analytical block RG-method which gives the exact ground
state of... | 1995-09-11 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Miguel A. Martin-Delgado and German Sierra |
cond-mat/9509052 | Geometric approach to the phenomenological theory of phase transitions
of the second kind | Geometrical approach to the phenomenological theory of phase transitions of
the second kind at constant pressure $P$ and variable temperature $T$ is
proposed. Equilibrium states of a system at zero external field and fixed $P$
and $T$ are described by points in three-dimensional space with coordinates
$\eta$, the order... | 1995-09-11 | 2019-08-17 | [
"cond-mat"
] | A.K. Kanyuka, V.S. Glukhov |
cond-mat/9509050 | Effects of the Lattice Discreteness on a Soliton in the
Su-Schrieffer-Heeger Model | In this paper we analytically study the effects of the lattice discreteness
on the electron band in the SSH model. We propose a modified version of the TLM
model which is derived from the SSH model using a continuum approximation. When
a soliton is induced in the electron-lattice system, the electron scattering
states ... | 1995-09-10 | 2009-10-28 | [
"cond-mat"
] | Ryoen Shirasaki |
cond-mat/9509051 | A simple model for Maxwell's demon type information engine | We have investigated the recently proposed self-consistent theory of
fluctuation - induced transport. In this framework the subsystem under study is
coupled to two independent baths at different temperatures. In this
non-equilibrium system one can extract energy at the expense of increased
entropy. This is a simple mod... | 1995-09-10 | 2009-10-28 | [
"cond-mat"
] | A. M. Jayannavar |
cond-mat/9509049 | Isotope Effect on the Formation Energy of Soliton in t-Polyacetylene | The formation energy of a soliton was derived in the TLM model to be
2\Delta_{0}/\pi which is independent of the masses of the polymer atoms. We
estimate effects of the electron-phonon coupling on the soliton formation
energy, particularly, through modifications of the harmonic oscillations of
(CH) groups. A model base... | 1995-09-10 | 2007-05-23 | [
"cond-mat"
] | Ryoen Shirasaki |
cond-mat/9509047 | Imbibition: An Example of Nonconserved Cellular Automaton | We report an imbibition experiment in 2D random porous media in which height
- height correlation function grows with a nonuniversal exponent. We find the
exponent to depend on evaporation. A cellular automaton model for imbibition
based on first principles is presented. A numerical study of the model gives
results whi... | 1995-09-09 | 2007-05-23 | [
"cond-mat",
"chem-ph"
] | P. B. Sunil Kumar, Debnarayan Jana |
cond-mat/9509048 | Universality Class of Two-Offspring Branching Annihilating Random Walks | We analyze a two-offspring Branching Annihilating Random Walk ($n=2$ BAW)
model, with finite annihilation rate. The finite annihilation rate allows for a
dynamical phase transition between a vacuum, absorbing state and a non-empty,
active steady state. We find numerically that this transition belongs to the
same univer... | 1995-09-09 | 2009-10-28 | [
"cond-mat"
] | Dexin Zhong and Daniel ben-Avraham |
cond-mat/9509045 | Heat Transport and the Nature of the Order Parameter in Superconducting
$UPt_3$ | Recent thermal conductivity data on the heavy fermion superconductor $UPt_3$
have been interpreted as offering support for an $E_{2u}$ model of the order
parameter as opposed to an $E_{1g}$ model. In this paper, we analyze this issue
from a theoretical standpoint including the detailed effects of Fermi surface
and gap ... | 1995-09-08 | 2009-10-28 | [
"cond-mat"
] | M.R. Norman, P.J. Hirschfeld |
cond-mat/9509046 | Electronic thermal conductivity and the Wiedemann-Franz law for
unconventional superconductors | We use the quasiclassical theory of superconductivity to calculate the
electronic contribution to the thermal conductivity. The theory is formulated
for low temperatures when heat transport is limited by electron scattering from
random defects and for superconductors with nodes in the order parameter. We
show that cert... | 1995-09-08 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | M.J. Graf, S.-K. Yip, J.A. Sauls (Northwestern University), and D.
Rainer (Universit\"at Bayreuth) |
cond-mat/9509042 | Non-perturbative calculation of the probability distribution of
plane-wave transmission through a disordered waveguide | A non-perturbative random-matrix theory is applied to the transmission of a
monochromatic scalar wave through a disordered waveguide. The probability
distributions of the transmittances T_{mn} and T_n=\sum_m T_{mn} of an incident
mode n are calculated in the thick-waveguide limit, for broken time-reversal
symmetry. A c... | 1995-09-08 | 2007-05-23 | [
"cond-mat"
] | S. A. van Langen, P. W. Brouwer, and C. W. J. Beenakker |
cond-mat/9509043 | Restoration of isotropy on fractals | We report a new type of restoration of macroscopic isotropy (homogenization)
in fractals with microscopic anisotropy. The phenomenon is observed in various
physical setups, including diffusions, random walks, resistor networks, and
Gaussian field theories. The mechanism is unique in that it is absent in spaces
with tra... | 1995-09-08 | 2011-02-28 | [
"cond-mat"
] | Martin T. Barlow, Kumiko Hattori, Tetsuya Hattori, Hiroshi Watanabe |
cond-mat/9509044 | LDA energy bands, low-energy Hamiltonians, t', t'', t_{perp}(k), and
J_{perp} | We describe the LDA bandstructure of YBa_2Cu_3O_7 in the 2 eV range from the
Fermi energy using orbital projections and compare with YBa_2Cu_4O_8. Then, the
high-energy and chain-related degrees of freedom are integrated out and we
arrive at two, nearest-neighbor, orthogonal, two-center, 8-band Hamiltonians,
the even a... | 1995-09-08 | 2009-10-28 | [
"cond-mat"
] | O. K. Andersen, A. I. Liechtenstein, O. Jepsen, and F. Paulsen
(Max-Planck Institut f\"ur Festk\"orperforschung, D-70569 Stuttgart) |
cond-mat/9509034 | Spin-twist driven persistent current in a strongly correlated
two-dimensional electron system: a manifestation of the gauge field | A persistent current, coupled with the spin state, of purely many-body origin
is shown to exist in Nagaoka's ferromagnetic state in two dimensions (2D). This
we regard as a manifestation of a gauge field, which comes from the surrounding
spin configuration and acts on the hole motion, being coupled to the
Aharonov-Bohm... | 1995-09-07 | 2009-10-28 | [
"cond-mat"
] | K. Kusakabe, H. Aoki |
cond-mat/9509036 | The massive $CP^{N-1}$ model for frustrated spin systems | We study the classical ${SU(N)\otimes U(1)/SU(N-1)\otimes U(1)}$ Non Linear
Sigma model which is the continuous low energy effective field theory for $N$
component frustrated spin systems. The $\beta$ functions for the two coupling
constants of this model are calculated around two dimensions at two loop order
in a low ... | 1995-09-07 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | P. Azaria, P. Lecheminant, D.mouhanna |
cond-mat/9509035 | Glassy Behavior in the Ferromagnetic Ising Model on a Cayley Tree | We present a detailed study of the nearest-neighbor ferromagnetic Ising model
on a Cayley tree. In the limit of zero field, the system displays glassy
behavior below a crossover temperature, $T_g$, that scales inversely with the
logarithm of the number of generations; thus $T_g$ is inversely proportional to
the logarit... | 1995-09-07 | 2009-10-28 | [
"cond-mat"
] | R. Melin, J.C. Angles d'Auriac, P. Chandra and B. Doucot |
cond-mat/9509029 | Superconductor-Insulator Transition in a Disordered Electronic System | We study an electronic model of a 2D superconductor with onsite randomness
using Quantum Monte Carlo simulations. The superfluid density is used to track
the destruction of superconductivity in the ground state with increasing
disorder. The non-superconducting state is identified as an insulator from the
temperature de... | 1995-09-07 | 2009-10-28 | [
"cond-mat"
] | Nandini Trivedi, Richard T. Scalettar and Mohit Randeria |
cond-mat/9509038 | Correlations in Ising chains with non-integrable interactions | Two-spin correlations generated by interactions which decay with distance r
as r^{-1-sigma} with -1 <sigma <0 are calculated for periodic Ising chains of
length L. Mean-field theory indicates that the correlations, C(r,L), diminish
in the thermodynamic limit L -> \infty, but they contain a singular structure
for r/L ->... | 1995-09-07 | 2009-10-28 | [
"cond-mat"
] | B. Bergersen (UBC), Z. Racz (Eotvos U.), and H.-J. Xu (U. Manitoba) |
cond-mat/9509040 | Exact results on linear response of cyclic molecular aggregates | Basing on the picture of Frenkel excitons in molecular crystals described by
the XY-model we consider the linear response of linear cyclic aggregates at
finite temperature. The exact results for characteristics of the response are
obtained. In particular, we calculate time-dependent two-point correlation
functions at f... | 1995-09-07 | 2008-02-03 | [
"cond-mat"
] | A.V.Ilinskaia, K.N.Ilinski, G.V.Kalinin, V.V.Melezhik, A.S.Stepanenko |
cond-mat/9509039 | Laughlin Wave Function and One-Dimensional Free Fermions | Making use of the well-known phase space reduction in the lowest Landau
level(LLL), we show that the Laughlin wave function for the $\nu = {1\over m}$
case can be obtained exactly as a coherent state representation of an one
dimensional $(1D)$ wave function. The $1D$ system consists of $m$ copies of
free fermions assoc... | 1995-09-07 | 2008-11-26 | [
"cond-mat"
] | Prasanta K. Panigrahi and M. Sivakumar |
cond-mat/9509041 | Bose-Einstein condensation in the harmonic oscillator potential | The Bose-Einstein condensation of a dilute gas of rubidium-87 atoms was
achieved by cooling a small number of atoms in a magnetic trap. The effective
potential of the trap is to lowest order harmonic and under these conditions we
estimate the critical temperature and the heat capacity of an ideal gas of Bose
particles.... | 1995-09-07 | 2007-05-23 | [
"cond-mat"
] | H. Haugerud and F. Ravndal |
cond-mat/9509033 | Discrete Scaling in Stock Markets Before Crashes | We propose a picture of stock market crashes as critical points in a
hierachical system with discrete scaling. The critical exponent is then
complex, leading to log-periodic fluctuations in stock market indexes. We
present ``experimental'' evidence in favor of this prediction. This picture is
in the spirit of the known... | 1995-09-06 | 2015-06-25 | [
"cond-mat"
] | James A. Feigenbaum and Peter G. O. Freund (University of Chicago) |
cond-mat/9509032 | Response of Kinetic Ising System to Oscillating External Fields:
Amplitude and Frequency Dependence | The S=1/2, nearest-neighbor, kinetic Ising model has been used to model
magnetization switching in nanoscale ferromagnets. For this model, earlier work
based on the droplet theory of the decay of metastable phases and Monte Carlo
simulations has shown the existence of a size dependent spinodal field which
separates det... | 1995-09-06 | 2009-10-28 | [
"cond-mat",
"chem-ph",
"hep-lat",
"mtrl-th"
] | S.W. Sides, R.A. Ramos, P.A. Rikvold, and M.A. Novotny |
cond-mat/9509025 | A Single Scale Infinite Volume Expansion for Three-Dimensional Many
Fermion Green's Functions | This paper is part of a program by Feldman, Trubowitz and ourselves to
construct a mathematically rigorous version of the BCS mechanism for
superconductivity. In previous papers the renormalization group around the
Fermi surface was defined and analyzed at all orders in perturbation theory.
Non-perturbative results (al... | 1995-09-06 | 2008-02-03 | [
"cond-mat"
] | Jacques Magnen and Vincent Rivasseau (Centre de Physique Th\'eorique,
Ecole Polytechnique, France) |
cond-mat/9509026 | Phase diagram of the non-hermitean asymmetric XXZ spin chain | The low-lying excitations of the asymmetric $XXZ$ spin chain are derived
explicitly in the antiferromagnetic regime through the Bethe Ansatz. It is
found that a massless and conformal invariant phase with central charge $c=1$
is separated from a massive phase by a line on which the low-lying excitations
surprisingly sc... | 1995-09-06 | 2011-07-19 | [
"cond-mat",
"hep-th",
"nlin.SI",
"solv-int"
] | Giuseppe Albertini, Silvio Renato Dahmen and Birgit Wehefritz |
cond-mat/9509030 | Thermal phase diagram of a model Hamiltonian for columnar phases of
liquid crystals | We present the phase diagram and critical properties of a coupled $XY$-Ising
model on a triangular lattice using the mean-field approximation, the
Migdal-Kadanoff scheme of renormalization group and Monte-Carlo simulations.
The topology of the phase diagram is similar for the three techniques, with the
appearance of a ... | 1995-09-06 | 2009-10-28 | [
"cond-mat"
] | M. H\'ebert and M.L. Plumer, (D\'epartement de Physique, Sherbrooke,
Qu\'ebec) |
cond-mat/9509024 | First order melting of vortex lattice in strongly type-II three
dimensional superconductors | We calculate the transition line of the first-order melting of vortex lattice
in a three-dimensional type-II superconductor in fields of several Tesla, using
the results from the density-functional theory of vortex melting in two
dimensions and the self-consistent Hartree treatment of correlations along the
field. The ... | 1995-09-06 | 2009-10-28 | [
"cond-mat"
] | Igor F. Herbut and Zlatko Tesanovic (Johns Hopkins University) |
cond-mat/9509031 | Numerical Tests of the Chiral Luttinger Liquid Theory for Fractional
Hall Edges | We report on microscopic numerical studies which support the chiral Luttinger
liquid theory of the fractional Hall edge proposed by Wen. Our calculations are
based in part on newly proposed and accurate many-body trial wavefunctions for
the low-energy edge excitations of fractional incompressible states. | 1995-09-06 | 2009-10-28 | [
"cond-mat"
] | J. J. Palacios and A. H. MacDonald (Indiana University) |
cond-mat/9509027 | Band spectra of rectangular graph superlattices | We consider rectangular graph superlattices of sides l1, l2 with the
wavefunction coupling at the junctions either of the delta type, when they are
continuous and the sum of their derivatives is proportional to the common value
at the junction with a coupling constant alpha, or the "delta-prime-S" type
with the roles o... | 1995-09-06 | 2016-08-31 | [
"cond-mat"
] | Pavel Exner, Ralf Gawlista |
cond-mat/9509028 | Fermi Liquid Damping and NMR Relaxation in Superconductors | Electron collisions for a two dimensional Fermi liquid (FL) are shown to give
a quasiparticle damping with interesting frequency and temperature variations
in the BCS superconducting state. The spin susceptibility which determines the
structure of the damping is analyzed in the normal state for a Hubbard model
with a c... | 1995-09-06 | 2009-10-28 | [
"cond-mat"
] | Shubha Tewari and John Ruvalds (University of Virginia) |
cond-mat/9509021 | Quantum Solitons in the Calogero-Sutherland Model | We show that the single quasi-particle Schr\"odinger equation for a certain
form of one-body potential yields a stationary one soliton solution. The
one-body potential is assumed to arise from the self- interacting charge
distribution with the singular kernel of the Calogero-Sutherland model. The
quasi-particle has neg... | 1995-09-05 | 2007-05-23 | [
"cond-mat"
] | R. K. Bhaduri and Akira Suzuki |
cond-mat/9509018 | Excess Noise in Biased Superconducting Weak Links | Non-equilibrium excess noise of a short quasi one-dimensional constriction
between two superconductors is considered. A general expression for the
current-current correlation function valid for arbitrary temperatures and bias
voltages is derived. This formalism is applied to a current-carrying quantum
channel with perf... | 1995-09-05 | 2009-10-28 | [
"cond-mat"
] | J.P. Hessling, V.S. Shumeiko, Yu.M. Galperin, G. Wendin |
cond-mat/9509017 | Superconductivity of Quasi-One-Dimensional Electrons in Strong Magnetic
Field | The superconductivity of quasi-one-dimensional electrons in the magnetic
field is studied. The system is described as the one-dimensional electrons with
no frustration due to the magnetic field. The interaction is assumed to be
attractive between electrons in the nearest chains, which corresponds to the
lines of nodes ... | 1995-09-05 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | Yasumasa Hasegawa and Mitake Miyazaki (Himeji Institute of Technology) |
cond-mat/9509022 | Glass Formation in a Periodic Long-Range Josephson Array | We present an analytic study of a dynamical instability in a periodic
long-range Josephson array frustrated by a weak transverse field. This glass
transition is characterized by a diverging relaxation time and a jump in the
Edwards-Anderson order parameter; it is {\sl not} accompanied by a coinciding
static transition. | 1995-09-05 | 2009-10-28 | [
"cond-mat"
] | P. Chandra, M. V. Feigelman, L. B. Ioffe |
cond-mat/9509020 | Self-Organized Criticality in the Model of Biological Evolution
Describing Interaction of "Coenophilous" and " Coenophobous" Species | The modification of the model of P.Bak and K.Sneppen of the self-organized
biological evolution is proposed on the basis of a formalization of the scheme
of the biosphere evolution suggested by O.V.Kovalev. This scheme is regarded as
one approximating the realistic model of the ecosystem evolution. The
fundamental diff... | 1995-09-05 | 2008-02-03 | [
"cond-mat",
"q-bio"
] | O.V.Kovalev, Yu.M.Pis'mak and V.V.Vechernin |
cond-mat/9509019 | The boson mediators of high-Tc superconductivity: phonons versus
composite bosons from the superconducting phenomenology | We address the question of whether boson mediators of high-$T_c$
superconductivity are composite (electronic) or independent phonons. For s-wave
superconductivity we show from the available experiments that the hypothesis of
composite bosons is rather unlikely. Our analysis points naturally towards
phonon mediators. In... | 1995-09-05 | 2009-10-28 | [
"cond-mat"
] | G. Varelogiannis and L. Pietronero |
cond-mat/9509023 | Surface superconductivity and order parameter suppression in UPt$_3$ | We show that a recent measurement of surface superconductivity in UPt$_3$
(Keller {\it et. al.}, Phys. Rev. Lett. {\bf 73}, 2364 (1994)) can be
understood if the superconducting pair wavefunction is suppressed
anisotropically at a vacuum to superconductor interface. Further measurements
of surface superconductivity can... | 1995-09-05 | 2009-10-28 | [
"cond-mat"
] | D.F. Agterberg and M.B. Walker |
cond-mat/9509013 | Theory of Nonlinear Magneto-Optics | Nonlinear magneto-optics is a very sensitive fingerprint of the electronic,
magnetic, and atomic structure of surfaces, interfaces, and thin ferromagnetic
films. Analyzing theoretically the nonlinear magneto-optical Kerr effect for
thin films of Fe(001) and at Fe surfaces we demonstrate exemplarily how various
electron... | 1995-09-04 | 2009-10-28 | [
"cond-mat"
] | U. Pustogowa, T. A. Luce, W. Hubner, K. H. Bennemann |
cond-mat/9509010 | Impurity Energy Level Within The Haldane Gap | An impurity bond $J{'}$ in a periodic 1D antiferromagnetic, spin 1 chain with
exchange $J$ is considered. Using the numerical density matrix renormalization
group method, we find an impurity energy level in the Haldane gap,
corresponding to a bound state near the impurity bond. When $J{'}<J$ the level
changes gradually... | 1995-09-04 | 2016-08-31 | [
"cond-mat"
] | Wei Wang, Shaojin Qin, Zhong-Yi Lu, Lu Yu and Zhaobin Su |
cond-mat/9509014 | Random Matrix Theory of the Energy-Level Statistics of Disordered
Systems at the Anderson Transition | We consider a family of random matrix ensembles (RME) invariant under
similarity transformations and described by the probability density $P({\bf
H})= \exp[-{\rm Tr}V({\bf H})]$. Dyson's mean field theory (MFT) of the
corresponding plasma model of eigenvalues is generalized to the case of weak
confining potential, $V(\... | 1995-09-04 | 2009-10-28 | [
"cond-mat"
] | C.M. Canali |
cond-mat/9509012 | Jack polynomials and the multi-component Calogero-Sutherland model | Using the ground state $\psi_0$ of a multicomponent generalization of the
Calogero-Sutherland model as a weight function, orthogonal polynomials in the
coordinates of one of the species are constructed. Using evidence from exact
analytic and numerical calculations, it is conjectured that these polynomials
are the Jack ... | 1995-09-04 | 2016-08-31 | [
"cond-mat",
"hep-th"
] | P.J. Forrester |
cond-mat/9509016 | Ising Universality in Three Dimensions: A Monte Carlo Study | We investigate three Ising models on the simple cubic lattice by means of
Monte Carlo methods and finite-size scaling. These models are the spin-1/2
Ising model with nearest-neighbor interactions, a spin-1/2 model with
nearest-neighbor and third-neighbor interactions, and a spin-1 model with
nearest-neighbor interactio... | 1995-09-04 | 2009-10-28 | [
"cond-mat"
] | Henk W.J. Bl\"ote, Erik Luijten, and Jouke R. Heringa |
cond-mat/9509011 | Spin-wave condensation and quantum melting of long-range
antiferromagnetic order in t-J model | Ground state wave function of two-dimensional t-J model is found at doping
close to half filling. It is shown that the condensation of Cooper pairs
(superconducting pairing of mobile holes) and the condensation of spin-waves
into spin-liquid state are closely connected. The effective spectrum of $S=1$
excitations, spin... | 1995-09-04 | 2009-10-28 | [
"cond-mat"
] | O. P. Sushkov |
cond-mat/9509015 | Excitation Spectra of the Negative-U Hubbard Model: A Small-Cluster
Study | An exact-diagonalization technique on small clusters is used to study
low-lying excitations and superconductivity in the two-dimensional negative-$U$
Hubbard model. We first calculate the Bogoliubov-quasiparticle spectrum,
condensation amplitude, and coherence length as functions of the coupling
strength $U/t$, thereby... | 1995-09-04 | 2016-08-31 | [
"cond-mat"
] | Y. Ohta, A. Nakauchi, R. Eder, K. Tsutsui, and S. Maekawa |
cond-mat/9509008 | Variational theory of elastic manifolds with correlated disorder and
localization of interacting quantum particles | We apply the gaussian variational method (GVM) to study the equilibrium
statistical mechanics of the two related systems: (i) classical elastic
manifolds, such as flux lattices, in presence of columnar disorder correlated
along the $\tau$ direction (ii) interacting quantum particles in a static
random potential. We fin... | 1995-09-02 | 2009-10-28 | [
"cond-mat"
] | Thierry Giamarchi and Pierre Le Doussal |
cond-mat/9509009 | Large time off-equilibrium dynamics of a manifold in a random potential | We study the out of equilibrium dynamics of an elastic manifold in a random
potential using mean-field theory. We find two asymptotic time regimes: (i)
stationary dynamics, (ii) slow aging dynamics with violation of equilibrium
theorems. We obtain an analytical solution valid for all large times with
universal scalings... | 1995-09-02 | 2009-10-28 | [
"cond-mat"
] | Leticia F. Cugliandolo, Jorge Kurchan and Pierre Le Doussal |
cond-mat/9509001 | Theory of a Scanning Tunneling Microscope with a Two-Protrusion Tip | We consider a scanning tunneling microscope (STM) such that tunneling occurs
through two atomically sharp protrusions on its tip. When the two protrusions
are separated by at least several atomic spacings, the differential conductance
of this STM depends on the electronic transport in the sample between the
protrusions... | 1995-09-01 | 2009-10-28 | [
"cond-mat"
] | Michael E. Flatte' and Jeff M. Byers |
cond-mat/9509004 | 2-Dimensional Electron Gas in a Linearly Varying Magnetic Field.
``Quantisation'' of the Electron and Current Density | We have developed new methods to calculate dispersion curves (analytically in
the simpler cases) from which we are able to derive the spatial distribution of
electron and current densities. We investigate the case where the magnetic
field varies linearly with position and the results provide useful insights
into the pr... | 1995-09-01 | 2009-10-28 | [
"cond-mat"
] | E. Hofstetter, J.M.C. Taylor and A. MacKinnon |
cond-mat/9509006 | Perturbation Theory around Non-Nested Fermi Surfaces I. Keeping the
Fermi Surface Fixed | The perturbation expansion for a general class of many-fermion systems with a
non-nested, non-spherical Fermi surface is renormalized to all orders. In the
limit as the infrared cutoff is removed, the counterterms converge to a finite
limit which is differentiable in the band structure. The map from the
renormalized to... | 1995-09-01 | 2009-10-28 | [
"cond-mat"
] | Joel Feldman (UBC, Vancouver), Manfred Salmhofer (ETH, Zurich) and
Eugene Trubowitz (ETH, Zurich) |
cond-mat/9509005 | Mean Field Solution of the Random Ising Model on the Dual Lattice | We perform a duality transformation that allows one to express the partition
function of the d-dimensional Ising model with random nearest neighbor coupling
in terms of new spin variables defined on the square plaquettes of the lattice.
The dual model is solved in the mean field approximation. | 1995-09-01 | 2009-10-28 | [
"cond-mat"
] | M. Serva, G. Paladin, J. Raboanary |
cond-mat/9509007 | Logarithmic temperature dependence of conductivity at half-integer
filling factors: Evidence for interaction between composite fermions | We have studied the temperature dependence of diagonal conductivity in
high-mobility two-dimensional samples at filling factors $\nu=1/2$ and 3/2 at
low temperatures. We observe a logarithmic dependence on temperature, from our
lowest temperature of 13 mK up to 400 mK. We attribute the logarithmic
correction to the eff... | 1995-09-01 | 2016-08-31 | [
"cond-mat"
] | L. P. Rokhinson, B. Su, and V. J. Goldman (Department of Physics, SUNY
at Stony Brook) |
cond-mat/9508149 | Optical properties of arrays of quantum dots with internal disorder | Optical properties of large arrays of isolated quantum dots are discussed in
order to interpret the existent photoluminescence data. The presented theory
explains the large observed shift between the lowest emission and absorption
energies as the average distance between the ground and first excited states of
the dots.... | 1995-09-01 | 2009-10-28 | [
"cond-mat"
] | E. V. Tsiper |
cond-mat/9509003 | Calogero-Sutherland techniques in the physics of disorderd wires | We discuss the connection between the random matrix approach to disordered
wires and the Calogero-Sutherland models. We show that different choices of
random matrix ensembles correspond to different classes of CS models. In
particular, the standard transfer matrix ensembles correspond to CS model with
sinh-type interac... | 1995-09-01 | 2009-10-28 | [
"cond-mat"
] | M.Caselle |
cond-mat/9508144 | Ground-State Phase Diagrams of the Two-Dimensional Quantum Heisenberg
Spin Glass Models | Ground-state properties of the two-dimensional $S=1/2$ random Heisenberg
models are investigated by the exact-diagonalization method. The phase diagram
of the bond-random model (the $\pm J$ model) is the same as that of the
corresponding Ising spin glass model, in spite of quantum fluctuation. In the
site-random model,... | 1995-08-31 | 2016-08-31 | [
"cond-mat"
] | Yoshihiko Nonomura and Yukiyasu Ozeki (Department of Physics, Tokyo
Institute of Technology) |
cond-mat/9508148 | Finite Size Scaling and Critical Exponents in Critical Relaxation | We simulate the critical relaxation process of the two-dimensional Ising
model with the initial state both completely disordered or completely ordered.
Results of a new method to measure both the dynamic and static critical
exponents are reported, based on the finite size scaling for the dynamics at
the early time. Fro... | 1995-08-31 | 2009-10-28 | [
"cond-mat"
] | Z. Li (Zhongshan Univ.), L. Sch\"ulke and B. Zheng (Siegen Univ.) |
cond-mat/9508143 | Long-Range Order of the Site-Random Spin Glass Model | The site-random Ising spin glass model is investigated. We find a rigorous
symmetry for the SG correlation and the free energy, which provides some
restrictions in the phase diagram. Using the defect energies calculated by the
numerical transfer matrix method, we obtain evidence for the existence of the
SG phase in the... | 1995-08-31 | 2009-10-28 | [
"cond-mat"
] | Yukiyasu Ozeki and Yoshihiko Nonomura |
cond-mat/9508142 | Dual description of the superconducting phase transition | The dual approach to the Ginzburg-Landau theory of a
Bardeen-Cooper-Schrieffer superconductor is reviewed. The dual theory describes
a grand canonical ensemble of fluctuating closed magnetic vortices, of
arbitrary length and shape, which interact with a massive vector field
representing the local magnetic induction. Wh... | 1995-08-31 | 2009-10-28 | [
"cond-mat"
] | M. Kiometzis, H. Kleinert, and A. M. J. Schakel (Institution:
http://www.physik.fu-berlin.de/kleinert.html) |
cond-mat/9508147 | Magnetotransport in a pseudomorphic GaAs/GaInAs/GaAlAs heterostructure
with a Si delta-doping layer | Magnetotransport properties of a pseudomorphic
GaAs/Ga0.8In0.2As/Ga0.75Al0.25As heterostructure are investigated in pulsed
magnetic fields up to 50 T and at temperatures of T=1.4 K and 4.2 K. The
structure studied consists of a Si delta-layer parallel to a Ga0.8In0.2As
quantum well (QW). The dark electron density of th... | 1995-08-31 | 2009-10-28 | [
"cond-mat"
] | M. van der Burgt, V.C. Karavolas, F.M. Peeters, J. Singleton, R.J.
Nicholas, F. Herlach, J.J. Harris, M. Van Hove and G. Borghs |
cond-mat/9508145 | Order-parameter fluctuations in the frustrated Heisenberg model on the
square lattice | The $T=0$ dynamics of the two-dimensional $s=1/2$ Heisenberg model with
competing nearest-neighbor $(J_1)$ and next-nearest-neighbor $(J_2)$
interactions is explored via the recursion method, specifically the
frequency-dependent fluctuations of the order parameters associated with some
of the known or suspected orderin... | 1995-08-31 | 2009-10-28 | [
"cond-mat"
] | Shu Zhang and Gerhard M\"uller |
cond-mat/9508146 | Lowest Landau level broadened by a Gaussian random potential with an
arbitrary correlation length: An efficient continued-fraction approach | For an electron in the plane subjected to a perpendicular constant magnetic
field and a homogeneous Gaussian random potential with a Gau{ss}ian covariance
function we approximate the averaged density of states restricted to the lowest
Landau level. To this end, we extrapolate the first 9 coefficients of the
underlying ... | 1995-08-31 | 2015-06-25 | [
"cond-mat"
] | Markus B\"ohm, Kurt Broderix, and Hajo Leschke |
cond-mat/9508138 | Theory on the Temperature Dependence of Giant Magnetoresistance | The temperature dependence of the giant magnetoresistance (GMR) for currents
parallel and perpendicular to the multilayer plane, is discussed by taking
account of the random exchange potentials, phonon scatterings and spin
fluctuations. The effect of spin fluctuations, which plays an important role at
finite temperatur... | 1995-08-30 | 2009-10-28 | [
"cond-mat"
] | Hideo Hasegawa (Tokyo Gakugei Univ.) |
cond-mat/9508140 | Vortices in superconducting films - statistics and fractional quantum
Hall effect | We present a new derivation of the Berry phase picked up during exchange of
parallel vortices. This derivation is based on the Bogolubov - de Gennes
formalism. The origin of the Magnus force is also critically reanalised. The
Magnus force can be interpreted as interaction with effective magnetic field.
The efective mag... | 1995-08-30 | 2009-10-28 | [
"cond-mat"
] | Jacek Dziarmaga |
cond-mat/9508141 | Nonlinear Magneto-Optical Response of $s$- and $d$-Wave Superconductors | The nonlinear magneto-optical response of $s$- and $d$-wave superconductors
is discussed. We carry out the symmetry analysis of the nonlinear
magneto-optical susceptibility in the superconducting state. Due to the surface
sensitivity of the nonlinear optical response for systems with bulk inversion
symmetry, we perform... | 1995-08-30 | 2009-10-28 | [
"cond-mat"
] | J. Schmalian and W. H\"ubner |
cond-mat/9508139 | Phase transitions in a Kagome lattice of Josephson junctions | We investigate the nature of the phase transition in Josephson junctions
arranged on a Kagome lattice. We find that an applied magnetic field
corresponding to 1/2 flux quanta per elementary triangle results in a pi phase
shift in the current phase relation for all bonds, resulting in an XY
antiferromagnet. This corresp... | 1995-08-30 | 2007-05-23 | [
"cond-mat",
"supr-con"
] | M.S. Rzchowski (Univerisity of Wisconsin-Madison) |
cond-mat/9508136 | Dynamics of 2D pancake vortices in layered superconductors | The dynamics of 2D pancake vortices in Josephson-coupled
superconducting/normal - metal multilayers is considered within the
time-dependent Ginzburg-Landau theory. For temperatures close to $T_{c}$ a
viscous drag force acting on a moving 2D vortex is shown to depend strongly on
the conductivity of normal metal layers. ... | 1995-08-30 | 2009-10-28 | [
"cond-mat"
] | A.S.Mel'nikov |
cond-mat/9508137 | Chaotic Repellers in Antiferromagnetic Ising Model | For the first time we present the consideration of the antiferromagnetic
Ising model in case of fully developed chaos and obtain the exact connection
between this model and chaotic repellers. We describe the chaotic properties of
this statistical mechanical system via the invariants characterizing a fractal
set and sho... | 1995-08-30 | 2009-10-28 | [
"cond-mat"
] | N.S. Ananikian, S.K. Dallakian, N.Sh. Izmailian, and K.A. Oganessyan |
cond-mat/9508129 | One-, Two-, and Three-channel Kondo effects for a model Ce$^{3+}$
Impurity in a Metal | We present studies of a simple Anderson model Hamiltonian for Ce$^{3+}$ ions
in cubic symmetry with three configurations ($f^0$,$f^1$,$f^2$). Our
Hamiltonian includes: (i) One-channel Anderson model; (ii) Two-channel Anderson
model. Using the third order scaling analysis, we study stability of the
non-Fermi liquid fixe... | 1995-08-29 | 2007-05-23 | [
"cond-mat"
] | Tae-Suk Kim and D. L. Cox |
cond-mat/9508130 | Playing Billiard in Version Space | A ray-tracing method inspired by ergodic billiards is used to estimate the
theoretically best decision rule for a set of linear separable examples. While
the Bayes-optimum requires a majority decision over all Perceptrons separating
the example set, the problem considered here corresponds to finding the single
Perceptr... | 1995-08-29 | 2007-05-23 | [
"cond-mat"
] | Pal Rujan (University of Oldenburg, Germany) |
cond-mat/9508132 | Impurity state in Haldane gap for S=1 Heisenberg antiferromagnetic chain
with bond doping | Using a new impurity density matrix renormalization group scheme, we
establish a reliable picture of how the low lying energy levels of a $S=1$
Heisenberg antiferromagnetic chain change {\it quantitatively} upon bond
doping. A new impurity state gradually occurs in the Haldane gap as $J' < J$,
while it appears only if ... | 1995-08-29 | 2009-10-28 | [
"cond-mat"
] | Xiaqun Wang and Steffen Mallwitz |
cond-mat/9508134 | Impact of criticality and phase separation on the spin dynamics of the
one-dimensional t-J model | The recursion method is used to determine the T=0 spin dynamic structure
factor S_{zz}(q,\omega) in the Luttinger liquid state and in the
phase-separated state of the one-dimensional t-J model. As the exchange
coupling increases from zero, the dispersions and line shapes of the dominant
spin excitations are observed to... | 1995-08-29 | 2009-10-28 | [
"cond-mat"
] | Shu Zhang, Gerhard M\"uller, and Joachim Stolze |
cond-mat/9508131 | Characterization of the reorientation transition in classical Heisenberg
models with dipole interaction | In this paper the thermodynamics of thin ferromagnetic films are studied in
the framework of the classical Heisenberg model with uniaxial anisotropy and
long--range dipole interaction. The dependence of the order of the
reorientation transition in these systems on the number of layers and on the
distribution of anisotr... | 1995-08-29 | 2009-10-28 | [
"cond-mat"
] | A. Hucht and K.D. Usadel |
cond-mat/9508133 | Glassy Mean-Field Dynamics of the Backgammon model | In this paper we present an exact study of the relaxation dynamics of the
backgammon model. This is a model of a gas of particles in a discrete space
which presents glassy phenomena as a result of {\it entropy barriers} in
configuration space. The model is simple enough to allow for a complete
analytical treatment of t... | 1995-08-29 | 2009-10-28 | [
"cond-mat"
] | S.Franz, F.Ritort |
cond-mat/9508135 | Correlations between eigenvalues of large random matrices with
independent entries | We derive the connected correlation functions for eigenvalues of large
Hermitian random matrices with independently distributed elements using both a
diagrammatic and a renormalization group (RG) inspired approach. With the
diagrammatic method we obtain a general form for the one, two and three-point
connected Green fu... | 1995-08-29 | 2009-10-28 | [
"cond-mat"
] | J. D'Anna, A. Zee |
cond-mat/9508128 | Monte Carlo Simulation of the Heisenberg Antiferromagnet on a Triangular
Lattice: Topological Excitations | We have simulated the classical Heisenberg antiferromagnet on a triangular
lattice using a local Monte Carlo algorithm. The behavior of the correlation
length $\xi$, the susceptibility at the ordering wavevector $\chi(\bf Q)$, and
the spin stiffness $\rho$ clearly reflects the existence of two temperature
regimes -- a ... | 1995-08-28 | 2009-10-28 | [
"cond-mat"
] | M. Wintel and H. U. Everts (University of Hannover, Germany) and W.
Apel (PTB Braunschweig, Germany) |
cond-mat/9508127 | A New Algorithm for Protein Design | We apply a new approach to the reverse protein folding problem. Our method
uses a minimization function in the design process which is different from the
energy function used for folding. For a lattice model, we show that this new
approach produces sequences that are likely to fold into desired structures.
Our method i... | 1995-08-28 | 2009-10-28 | [
"cond-mat",
"q-bio"
] | J.M. Deutsch and Tanya Kurosky |
cond-mat/9508126 | D.C. Transport Measurements and the Direction of Propagation of
Composite Fermion Edge States | Simple and quite general considerations are used to show that the results of
d.c. transport experiments on macroscopic Hall bars are inconsistent with
Hartree models in which a majority of the branches of single-particle composite
fermion edge states at the Fermi level propagate in the direction opposite to
that in whi... | 1995-08-27 | 2007-05-23 | [
"cond-mat"
] | George Kirczenow |
cond-mat/9508125 | Continuous 3d Freezing Transition in Layered Superconductors | We use Ginzburg-Landau theory to study the $H_{c2}$ transition in layered
superconductors with field parallel to the layers, finding a continuous 3d
freezing transition to a triangular vortex super-solid in the three-dimensional
XY universality class. If screening effects are neglected,
off--diagonal--long--range--orde... | 1995-08-26 | 2009-10-28 | [
"cond-mat"
] | Leon Balents and Leo Radzihovsky |
cond-mat/9508117 | Magnetic Properties of Epitaxial and Polycrystalline Fe/Si Multilayers | Fe/Si multilayers with antiferromagnetic interlayer coupling have been grown
via ion-beam sputtering on both glass and single-crystal substrates. High-angle
x-ray diffraction measurements show that both sets of films have narrow Fe
peaks, implying a large crystallite size and crystalline iron silicide spacer
layers. Lo... | 1995-08-26 | 2009-10-28 | [
"cond-mat"
] | A. Chaiken, R.P. Michel and C.-T. Wang |
cond-mat/9508121 | On Quantum Solitons in the Sawtooth Lattice | We study the sawtooth lattice of a coupled spin $1/2$ Heisenberg system, a
variant of the railroad trestle lattice. The ground state of this system is
two-fold degenerate with periodic boundary conditions and supports kink
antikink excitations, which are distinct in this case, unlike the railroad
trestle lattice. The r... | 1995-08-26 | 2009-10-28 | [
"cond-mat"
] | Diptiman Sen and B. Sriram Shastry (IISc, Bangalore- India) and R. E.
Walstedt and R. Cava (AT&T Bell Labs, Muray Hill, NJ- USA) |
cond-mat/9508124 | Dynamics of quantum spin systems in dimer and valence-bond solid ground
states stabilized by competing interactions | For special coupling ratios, the one-dimensional (1D) s=1/2 Heisenberg model
with antiferromagnetic nearest and next-nearest neighbor interactions has a
pure dimer ground state, and the 1D s=1 Heisenberg model with antiferromagnetic
bilinear and biquadratic interactions has an exact valence-bond-solid ground
state. The... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | Yongmin Yu and Gerhard M\"uller |
cond-mat/9508113 | Stable Quantum Monte Carlo Algorithm for $T=0$ Calculation of Imaginary
Time Green Functions | We present a numerically stable Quantum Monte Carlo algorithm to calculate
zero-temperature imaginary-time Green functions $ G(\vec{r}, \tau) $ for
Hubbard type models. We illustrate the efficiency of the algorithm by
calculating the on-site Green function $ G(\vec{r}=0, \tau) $ on $4 \times 4$
to $12 \times 12$ lattic... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | F.F. Assaad and M. Imada |
cond-mat/9508116 | Relaxation of Thermoremanent Magnetization in Different Magnetic Phases
Of Fe-rich $\mbox{$\gamma$}$-FeNiCr Alloys | The time decay of the thermoremanent magnetization(TRM) of the
$\mbox{Fe}_{80-\mbox{x}}\mbox{Ni}_{\mbox{x}}\mbox{Cr}_{20}$ ($14\leq \mbox{x}
\leq 30$) alloys has been measured for four different magnetic phases within
the fcc $\mbox{$\gamma$}$-phase using a SQUID magnetometer. In the spin-glass
phase(SG)(X=19) very dis... | 1995-08-25 | 2007-05-23 | [
"cond-mat"
] | G.Sinha, R.Chatterjee, M.Uehara, and A.K.Majumdar |
cond-mat/9508123 | Exact Results for Kinetics of Catalytic Reactions | The kinetics of an irreversible catalytic reaction on substrate of arbitrary
dimension is examined. In the limit of infinitesimal reaction rate
(reaction-controlled limit), we solve the dimer-dimer surface reaction model
(or voter model) exactly in arbitrary dimension $D$. The density of reactive
interfaces is found to... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | L. Frachebourg and P. L. Krapivsky |
cond-mat/9508120 | Simple theory for spin-lattice relaxation in metallic rare earth
ferromagnets | The spin-lattice relaxation time $\tau_{SL}$ is a key quantity both for the
dynamical response of ferromagnets excited by laser pulses and as the speed
limit of magneto-optical recording. Extending the theory for the electron
paramagnetic resonance of magnetic impurities to spin-lattice relaxation in
ferromagnetic rare... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | W. H\"ubner and K. H. Bennemann |
cond-mat/9508119 | Self-affine Asperity Model for earthquakes | A model for fault dynamics consisting of two rough and rigid brownian
profiles that slide one over the other is introduced. An earthquake occurs when
there is an intersection between the two profiles. The energy release is
proportional to the overlap interval. Our model exhibits some specific features
which follow from... | 1995-08-25 | 2019-08-17 | [
"cond-mat"
] | V. De Rubeis, R. Hallgass, V. Loreto, G. Paladin, L. Pietronero and P.
Tosi |
cond-mat/9508110 | Exact finite-size spectrum for the multi-channel Kondo model and
Kac-Moody fusion rules | The finite-size spectrum for the multi-channel Kondo model is derived
analytically from the exact solution, by mapping the nontrivial Z$_{n}$ part of
the Kondo scattering into that for the RSOS model coupled with the impurity.
The analysis is performed for the case of $n-2S=1$, where $n$ is the number of
channel and $S... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | Satoshi Fujimoto and Norio Kawakami |
cond-mat/9508115 | Numerical Study of a Lyapunov Functional for the Complex Ginzburg-Landau
Equation | We numerically study in the one-dimensional case the validity of the
functional calculated by Graham and coworkers as a Lyapunov potential for the
Complex Ginzburg-Landau equation. In non-chaotic regions of parameter space the
functional decreases monotonically in time towards the plane wave attractors,
as expected for... | 1995-08-25 | 2015-06-25 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | R. Montagne, E. Hernandez-Garcia and M. San Miguel |
cond-mat/9508112 | Toulouse Points and Non-Fermi Liquid States in the Mixed Valence Regime
of the Generalized Anderson Model | We study the mixed valence regime of a generalized Anderson impurity model
using the bosonization approach. This single impurity problem is defined by the
$U=\infty$ Anderson model with an additional density-density interaction, as
well as an explicit exchange interaction, between the impurity and conduction
electrons.... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | Gabriel Kotliar and Qimiao Si |
cond-mat/9508122 | On the Mechanism of Pinning in Phase-Separating Polymer Blends | We re-explore the kinetics of spinodal decomposition in off-critical polymer
blends through numerical simulations of the Cahn-Hilliard equation with the
Flory-Huggins-De Gennes free energy functional. Even in the absence of thermal
noise, the solution of the discretized equation of motion shows coarsening in
the late s... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | Claudio Castellano and Sharon C. Glotzer |
cond-mat/9508118 | In-Plane and Out-of-Plane Charge Dynamics of High-$T_c$ Cuprates | We propose a theoretical expression for the $k$- and $\omega$-dependent
dielectric function of a stack of two-dimensional layers coupled along the
direction perpendicular to the layers, and discuss some of its properties. We
argue that the plasma frequencies at $k=0$ should correspond to those which are
experimentally ... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | Dirk van der Marel and Jae H. Kim |
cond-mat/9508111 | Density Matrix Renormalization Group Method for 2D Classical Models | The density matrix renormalization group (DMRG) method is applied to the
interaction round a face (IRF) model. When the transfer matrix is asymmetric,
singular-value decomposition of the density matrix is required. A trial
numerical calculation is performed on the square lattice Ising model, which is
a special case of ... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | Tomotoshi Nishino |
cond-mat/9508114 | Inverse photoemission in strongly correlated electron systems | Based on exact results for small clusters of 2D t-J model we demonstrate the
existence of several distinct `channels' in its inverse photoemission (IPES)
spectrum. Hole-like quasiparticles can either be annihilated completely, or
leave behind a variable number of spin excitations, which formed the `dressing
cloud' of t... | 1995-08-25 | 2009-10-28 | [
"cond-mat"
] | R. Eder and Y. Ohta |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.