id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
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cond-mat/9508106 | On Damage Spreading Transitions | We study the damage spreading transition in a generic one-dimensional
stochastic cellular automata with two inputs (Domany-Kinzel model) Using an
original formalism for the description of the microscopic dynamics of the
model, we are able to show analitically that the evolution of the damage
between two systems driven ... | 1995-08-24 | 2009-10-28 | [
"cond-mat"
] | Franco Bagnoli (University of Florence, Italy) |
cond-mat/9508109 | Exact Results for 1D Kondo Lattice from Bosonization | We find a solvable limit to the problem of the 1D electron gas interacting
with a lattice of Kondo scattering centers. In this limit, we present exact
results for the problems of incommensurate filling, commensurate filling,
impurity vacancy states, and the commensurate-incommensurate transition. | 1995-08-24 | 2019-08-15 | [
"cond-mat"
] | Oron Zachar, S. A. Kivelson, V. J. Emery |
cond-mat/9508104 | Thermodynamics of Finite Quantum Systems: Application to Spin Magnetism
II | We extend our study of thermodynamics of a Kubo particle to temperatures
smaller than the interlevel spacing. We obtain the distribution functions of
spin susceptibility and heat capacity for Poisson and Wigner-Dyson level
statistics. We evaluate the line shape of the Knight shift due to spin effects
both in a single p... | 1995-08-24 | 2009-10-28 | [
"cond-mat"
] | S. Sitotaw and R.A. Serota (University of Cincinnati) |
cond-mat/9508105 | Spin correlation functions in random-exchange s=1/2 XXZ chains | The decay of (disorder-averaged) static spin correlation functions at T=0 for
the one-dimensional spin-1/2 XXZ antiferromagnet with uniform longitudinal
coupling $J\Delta$ and random transverse coupling $J\lambda_i$ is investigated
by numerical calculations for ensembles of finite chains. At $\Delta=0$ (XX
model) the c... | 1995-08-24 | 2009-10-28 | [
"cond-mat"
] | Heinrich R\"oder, Joachim Stolze, Richard N. Silver, and Gerhard
M\"uller |
cond-mat/9508103 | Elementary excitations in the $\Delta$-chain | We clarify elementary excitations in the $\Delta$-chain. They are found to be
`kink'-`antikink' type domain wall excitations to the dimer singlet ground
state. The characters of a kink and an antikink are quite different in this
system: a kink has no excitation energy and is localized, while an antikink has
a finite ex... | 1995-08-24 | 2009-10-28 | [
"cond-mat"
] | Tota Nakamura and Kenn Kubo |
cond-mat/9508108 | Grain Boundary Induced Magneto-Far Infrared Resonances in
Superconducting YBa$_2$Cu$_3$O$_{7-\delta }$ Thin Films | Spectral features induced by 45$^{\circ }$ in-plane misoriented grains have
been observed in the far infrared magneto-transmission of YBa$_2$Cu$_3$O$%
_{7-\delta }$ thin films. Two strong dispersive features are found at 80 and
160 $cm^{-1}$ and a weaker one at 116 $cm^{-1}$. The data can be well
represented by Lorentz... | 1995-08-24 | 2009-10-28 | [
"cond-mat"
] | H.-T. S. Lihn, E.-J. Choi, S. Kaplan, H. D. Drew, Q. Li and D. B.
Fenner |
cond-mat/9508107 | Microscopic theory of the pseudogap and Peierls transition in
quasi-one-dimensional materials | The problem of deriving from microscopic theory a Ginzburg-Landau free energy
functional to describe the Peierls or charge-density-wave transition in
quasi-one-dimensional materials is considered. Particular attention is given to
how the thermal lattice motion affects the electronic states. Near the
transition temperat... | 1995-08-24 | 2009-10-28 | [
"cond-mat"
] | Ross H. McKenzie |
cond-mat/9508097 | First-principles molecular dynamics of liquid alkali metals based on the
quantal hyper-netted chain theory | The density-functional theory proves that an ion-electron mixture can be
treated as a one-component liquid interacting only via a {\it pairwise}
interaction in the evaluation of the ion-ion radial distribution function
(RDF), and provides a set of integral equations: one is an integral equation
for the ion-ion RDF and ... | 1995-08-23 | 2007-05-23 | [
"cond-mat",
"mtrl-th"
] | Shaw Kambayasi and Junzo Chihara (JAERI) |
cond-mat/9508102 | Acoustic Attenuation in High-$T_c$ Superconductors | We analyze the acoustic attenuation rate in high-$T_c$ superconductors, and
find that this method offers an additional way to examine the anisotropy of the
superconducting order parameter in these materials. We argue that it should be
possible to distinguish the electronic contribution to the acoustic
attenuation, whic... | 1995-08-23 | 2015-06-25 | [
"cond-mat"
] | T. Wolenski and J.C. Swihart |
cond-mat/9508098 | Hidden Orders and RVB Formation of the Four-Leg Heisenberg Ladder Model | The ground state of the four-chain Heisenberg ladder model is numerically
investigated. Hidden-order correlations suitable for the system are introduced
and calculated with an emphasis on the spatially isotropic point, where a
corresponding material exists. The existence of a long-range hidden correlation
indicates for... | 1995-08-23 | 2009-10-28 | [
"cond-mat"
] | Yoshihiro Nishiyama (Department of Physics, University of Tokyo),
Naomichi Hatano (Department of Physics, University of Tokyo and Lyman
Laboratory of Physics, Harvard University) and Masuo Suzuki (Department of
Physics, University of Tokyo) |
cond-mat/9508101 | Strong-coupling expansions for the pure and disordered bose Hubbard
model | A strong-coupling expansion for the phase boundary of the (incompressible)
Mott insulator is presented for the bose Hubbard model. Both the pure case and
the disordered case are examined. Extrapolations of the series expansions
provide results that are as accurate as the Monte Carlo simulations and agree
with the exact... | 1995-08-23 | 2009-10-28 | [
"cond-mat"
] | J. K. Freericks (Georgetown University) and H. Monien (ETH-Zurich) |
cond-mat/9508096 | Strong correlation effects in the doped Hubbard model in infinite
dimensions | The density of states and the optical conductivity of the doped Hubbard model
on a Bethe lattice with infinite connectivities have been studied using an
analytic variant of the Lanczos continued fraction method. The spectral weight
of the gap states and the position of the chemical potential upon hole or
electron dopin... | 1995-08-23 | 2015-06-25 | [
"cond-mat"
] | Hae-Young Kee and Jongbae Hong |
cond-mat/9508100 | Spin-ordering and magnon collective modes for two-dimensional electron
lattices in strong magnetic fields | We study the spin-ordering and the magnon collective modes of the
two-dimensional Wigner crystal state at strong magnetic fields. Our work is
based on the Hartree-Fock approximation for the ground state and the
time-dependent Hartree-Fock approximation for the collective modes. We find
that the ground state is ferromag... | 1995-08-23 | 2009-10-28 | [
"cond-mat"
] | R. Cote (Universite de Sherbrooke and CRPS), A.H. MacDonald (Indiana
University) |
cond-mat/9508099 | Randomly Charged Polymers: Excess Charge Dependence of Spatial
Configurations | Spatial configurations of randomly charged polymers, known as polyampholytes
(PAs), are very sensitive to the overall excess charge Q. Analytical arguments,
supported by Monte Carlo simulations and exact enumeration studies, lead to the
following picture: For Q < Q_c = q_0 N^2 (q_0 is the elementary charge, N is
the nu... | 1995-08-23 | 2007-11-28 | [
"cond-mat"
] | Yacov Kantor (Tel Aviv U.) and Mehran Kardar (MIT) |
cond-mat/9508095 | Inhomogeneity and Current Corrections to a Non-uniform Electronic System
in Strong Magnetic Fields | Using the polarizability of a free electron gas in a magnetic field and the
Current-Density Functional Theory (CDFT) developed by Vignale and Rasolt, we
derive the gradient and current corrections for the energy functional of a
non-uniform electronic system in a strong magnetic field.
First, we find the Tomishima-Shi... | 1995-08-22 | 2016-08-31 | [
"cond-mat"
] | A. Mazzolo, E. L. Pollock and G. Zerah |
cond-mat/9508093 | Long--time relaxation of current in a 2D weakly disordered conductor | The long-time relaxation of the average conductance in a 2D mesoscopic sample
is studied within the method recently suggested by Muzykantskii and
Khmelnitskii and based on a saddle-point approximation to the supermatrix
$\sigma$--model. The obtained far asymptotics is in perfect agreement with the
result of renormaliza... | 1995-08-22 | 2007-05-23 | [
"cond-mat"
] | Alexander D. Mirlin |
cond-mat/9508091 | Dirac Fermions with Disorder in Two Dimensions: Exact Result | Dirac fermions on a two-dimensional lattice with disorder are considered. The
Dirac mass, which controls the gap between the two bands of the fermions, is
subject to random fluctuations. Another type of disorder is discussed presented
by a random vector potential. It is shown that the imaginary part of the
one-particle... | 1995-08-22 | 2009-10-28 | [
"cond-mat"
] | K. Ziegler (Max-Planck-Institut f\"ur Physik Komplexer Systeme) |
cond-mat/9508092 | Influence of Refractory Periods in the Hopfield model | We study both analytically and numerically the effects of including
refractory periods in the Hopfield model for associative memory. These periods
are introduced in the dynamics of the network as thresholds that depend on the
state of the neuron at the previous time. Both the retrieval properties and the
dynamical beha... | 1995-08-22 | 2015-06-25 | [
"cond-mat",
"q-bio"
] | C. R. da Silva (CBPF and Universidade Federal de Alagoas, Brazil), F.
A. Tamarit (FaMAF, Universidad Nacional de Cordoba, Argentina) and E. M. F.
Curado (CBPF and ICCMP, Brazil) |
cond-mat/9508087 | Magnetism and Structural Distortion in the La0.7Sr0.3MnO3 Metallic
Ferromagnet | Neutron scattering studies on a single crystal of the highly-correlated
electron system, La1-xSrxMnO3 with x~0.3, have been carried out elucidating
both the spin and lattice dynamics of this metallic ferromagnet. We report a
large measured value of the spin wave stiffness constant, which directly shows
that the electro... | 1995-08-21 | 2009-10-28 | [
"cond-mat"
] | Michael C. Martin, G. Shirane (BNL), Y. Endoh, K. Hirota (Tohoku
Univ.), Y. Moritomo, and Y. Tokura (Univ. Tokyo) |
cond-mat/9508083 | Excitons in C_60 studied by Temperature Dependent Optical Second-
Harmonic Generation | The electric dipole forbidden T_1g excitonic state of solid C_60 at
omega=1.81 eV can be probed with a Second-Harmonic Generation (SHG) experiment.
We show that the SHG line shape depends strongly on the degree of rotational
order. We observe a splitting into two peaks below the rotational ordering
phase transition tem... | 1995-08-21 | 2009-10-28 | [
"cond-mat"
] | A. M. Janner, R. Eder, B. Koopmans, H. T. Jonkman and G. A. Sawatzky |
cond-mat/9508086 | Diffusive conductors as Andreev interferometers | We present a novel mechanism of phase-dependent electric transport in
diffusive normal metal-superconductor structures. We provide a detailed
theoretical and numerical analysis of recent unexplained experiments
essentially explaining them. | 1995-08-21 | 2009-10-28 | [
"cond-mat"
] | Yuli V. Nazarov and T.H. Stoof |
cond-mat/9508084 | Fluctuations of Transmission Distribution in Disordered Conductors | We developed a microscopic approach to calculate the sample-to-sample
fluctuations of transmission distribution in disordered conductors. This
bridges between Green's function and random matrix theories of quantum
transport. The results obtained show that the correlations of transmission
eigenvalues obey universal Dyso... | 1995-08-21 | 2009-10-28 | [
"cond-mat"
] | Yuli V. Nazarov |
cond-mat/9508082 | A Microscopic Model of Non-Reciprocal Optical Effects in Cr_2 O_3 | This manuscript deals with the question "How does light couple to an
antiferromagnetic order parameter"? For that we develop a microscopic model
that explains the non-reciprocal optical effects in centrosymmetric Cr_2 O_3.
It is shown that light can couple {\em directly} to the antiferromagnetic order
parameter. This c... | 1995-08-21 | 2009-10-28 | [
"cond-mat"
] | V.N. Muthukumar, Roser Valenti and Claudius Gros |
cond-mat/9508088 | Standing Spin Wave Resonances in Manganite Films | We report the first observation of spin wave resonances in 110 nm thick films
of LBMO. The spin wave stiffness follows $D$ = 47 (1 - 3 \times 10$_{-7}$
$T^{5/2}$) meV${\AA_2}$. | 1995-08-21 | 2009-10-28 | [
"cond-mat"
] | S. E. Lofland, S. M. Bhagat, C. Kwon, M. C. Robson, R. Ramesh and R.
P. Sharma |
cond-mat/9508089 | Two--magnon scattering and the spin--phonon interaction beyond the
adiabatic approximation | We consider a model of Raman scattering for a two--dimensional $S=1/2$
Heisenberg Anti-Ferromagnet which includes a {\it dynamical} spin--phonon
interaction. We observe a broadening of the line shape due to increased
coupling with excited high--energy spin states. Our results are close to a
model of random static excha... | 1995-08-21 | 2009-10-28 | [
"cond-mat"
] | Matthew J. Reilly and A. G. Rojo |
cond-mat/9508085 | Superheating fields of superconductors: Asymptotic analysis and
numerical results | The superheated Meissner state in type-I superconductors is studied both
analytically and numerically within the framework of Ginzburg-Landau theory.
Using the method of matched asymptotic expansions we have developed a
systematic expansion for the solutions of the Ginzburg-Landau equations in the
limit of small $\kapp... | 1995-08-21 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | Andrew J. Dolgert, S. John Di Bartolo, and Alan T. Dorsey |
cond-mat/9508076 | On the normal phase of 2D Fermi liquid with weak attraction between
particles | Proceeding from the simplest field theoretical model of 2D metal, the normal
phase Green functions of the weakly interacting fermions and the order
parameter fluctuations (responsible for the attraction between fermions) are
obtained. It is shown that taking into consideration the fluctuations mentioned
leads to a cons... | 1995-08-18 | 2007-05-23 | [
"cond-mat"
] | V.P. Gusynin, V.M.Loktev and I.A. Shovkovy |
cond-mat/9508072 | Critical behavior of an absorbing phase transition in an interacting
monomer-dimer model | We study a monomer-dimer model with repulsive interactions between the same
species in one dimension. With infinitely strong interactions the model
exhibits a continuous transition from a reactive phase to an inactive phase
with two equivalent absorbing states. Static and dynamic Monte Carlo
simulations show that the c... | 1995-08-18 | 2015-06-25 | [
"cond-mat"
] | Hyunggyu Park and Heungwon Park |
cond-mat/9508074 | Dynamical Properties of Two Coupled Hubbard Chains at Half-filling | Using grand canonical Quantum Monte Carlo (QMC) simulations combined with
Maximum Entropy analytic continuation, as well as analytical methods, we
examine the one- and two-particle dynamical properties of the Hubbard model on
two coupled chains at half-filling. The one-particle spectral weight function,
$A({\bf k},\ome... | 1995-08-18 | 2009-10-28 | [
"cond-mat"
] | H. Endres, R.M. Noack, W. Hanke, D. Poilblanc, and D.J. Scalapino |
cond-mat/9508075 | Hydrodynamics of Spatially Ordered Superfluids | We derive the hydrodynamic equations for the supersolid and superhexatic
phases of a neutral two-dimensional Bose fluid. We find, assuming that the
normal part of the fluid is clamped to an underlying substrate, that both
phases can sustain third-sound modes and that in the supersolid phase there are
additional modes d... | 1995-08-18 | 2009-10-28 | [
"cond-mat"
] | H.T.C. Stoof, K. Mullen, M. Wallin, and S.M. Girvin |
cond-mat/9508080 | Quantum phase transitions in spins systems and the high temperature
limit of continuum quantum field theories | We study the finite temperature crossovers in the vicinity of a zero
temperature quantum phase transition. The universal crossover functions are
observables of a continuum quantum field theory. Particular attention is
focussed on the high temperature limit of the continuum field theory, the
so-called ``quantum-critical... | 1995-08-18 | 2008-02-03 | [
"cond-mat"
] | Subir Sachdev (Yale University) |
cond-mat/9508081 | Peak Values of Conductivity in Integer and Fractional Quantum Hall
Effect | The diagonal conductivity $\sigma_{xx}$ was measured in the Corbino geometry
in both integer and fractional quantum Hall effect (QHE). We find that peak
values of $\sigma_{xx}$ are approximately equal for transitions in a wide range
of integer filling factors $3<\nu<16$, as expected in scaling theories of QHE.
This fac... | 1995-08-18 | 2016-08-31 | [
"cond-mat"
] | L. P. Rokhinson, B. Su and V. J. Goldman |
cond-mat/9508078 | Evidence for ideal insulating/conducting state in a 1D integrable system | Using numerical diagonalization techniques we analyze the finite
temperature/frequency conductance of a one dimensional model of interacting
spinless fermions. Depending on the interaction, the observed finite
temperature charge stiffness and low frequency conductance indicate a
fundamental difference between integrabl... | 1995-08-18 | 2009-10-28 | [
"cond-mat"
] | X. Zotos and P. Prelovsek |
cond-mat/9508071 | Dynamic scaling behavior of an interacting monomer--dimer model | We study the dynamic scaling behavior of a monomer-dimer model with repulsive
interactions between the same species in one dimension. With infinitely strong
interactions the model exhibits a continuous transition from a reactive phase
to an inactive phase with two equivalent absorbing states. This transition does
not b... | 1995-08-18 | 2009-10-28 | [
"cond-mat"
] | Heungwon Park, Mann Ho Kim, and Hyunggyu Park (Inha University) |
cond-mat/9508079 | Superfluidity of spin-polarized 6Li | We study the prospects for observing superfluidity in a spin-polarized atomic
gas of $^6$Li atoms, using state-of-the-art interatomic potentials. We
determine the spinodal line and show that a BCS transition to the superfluid
state can indeed occur in the (meta)stable region of the phase diagram if the
densities are su... | 1995-08-18 | 2009-10-28 | [
"cond-mat"
] | H.T.C. Stoof, M. Houbiers, C.A. Sackett, and R.G. Hulet |
cond-mat/9508073 | Reentrant phase diagram of branching annihilating random walks with one
and two offsprings | We investigate the phase diagram of branching annihilating random walks with
one and two offsprings in one dimension. A walker can hop to a nearest neighbor
site or branch with one or two offsprings with relative ratio. Two walkers
annihilate immediately when they meet. In general, this model exhibits a
continuous phas... | 1995-08-18 | 2009-10-28 | [
"cond-mat"
] | Sungchul Kwon and Hyunggyu Park (Inha University) |
cond-mat/9508077 | Effective Breather Trapping Mechanism for DNA Transcription | Collective coordinate and direct numerical integration methods are applied to
the analysis of a one-dimensional DNA model. A modification of the coupling
constant in an extended region is found to be less selective towards the
breather it can trap than an isolated impurity. Therefore it provides a
possible physical mec... | 1995-08-18 | 2009-10-28 | [
"cond-mat",
"q-bio"
] | Julian J.-L. Ting and Michel Peyrard |
cond-mat/9508070 | Approximation of excitonic absorption in disordered systems using a
compositional component weighted CPA | Employing a recently developed technique of component weighted two particle
Green's functions in the CPA of a binary substitutional alloy $A_cB_{1-c}$ we
extend the existing theory of excitons in such media using a contact potential
model for the interaction between electrons and holes to an approximation which
interpo... | 1995-08-17 | 2009-10-28 | [
"cond-mat"
] | N.F. Schwabe and R.J. Elliott (Department of Physics, University of
Oxford Theoretical Physics, Oxford, UK) |
cond-mat/9508065 | Quantum-Phase Transitions of Interacting Bosons and the Supersolid Phase | We investigate the properties of strongly interacting bosons in two
dimensions at zero temperature using mean-field theory, a variational Ansatz
for the ground state wave function, and Monte Carlo methods. With on-site and
short-range interactions a rich phase diagram is obtained. Apart from the
homogeneous superfluid ... | 1995-08-17 | 2009-10-28 | [
"cond-mat"
] | Anne van Otterlo, Karl-Heinz Wagenblast, Reinhard Baltin, C. Bruder,
Rosario Fazio, and Gerd Sch\"on |
cond-mat/9508066 | Universal Multifractality in Quantum Hall Systems with Long-Range
Disorder Potential | We investigate numerically the localization-delocalization transition in
quantum Hall systems with long-range disorder potential with respect to
multifractal properties. Wavefunctions at the transition energy are obtained
within the framework of the generalized Chalker--Coddington network model. We
determine the critic... | 1995-08-17 | 2009-10-28 | [
"cond-mat"
] | Rochus Klesse and Marcus Metzler |
cond-mat/9508067 | Phenomenological model of elastic distortions near the spin-Peierls
transition in $CuGeO_3$ | A phenomenological model of the Landau type forms the basis for a study of
elastic distortions near the spin-Peierls transition $T_c$ in $CuGeO_3$. The
atomic displacements proposed by Hirota {\it et al.} [Phys. Rev. Lett. {\bf
73}, 736 (1994)] are accounted for by the model which includes linear coupling
between $Cu$ ... | 1995-08-17 | 2009-10-28 | [
"cond-mat"
] | M.L. Plumer, (D\'epartement de Physique, Sherbrooke, Qu\'ebec) |
cond-mat/9508069 | Composite Fermion Theory, Edge Currents and the Fractional Quantum Hall
Effect | We present a mean field theory of composite fermion edge channel transport in
the fractional and integer quantum Hall regimes. An expression relating the
electro-chemical potentials of composite fermions at the edges of a sample to
those of the corresponding electrons is obtained and a plausible form is
assumed for the... | 1995-08-17 | 2009-10-28 | [
"cond-mat"
] | George Kirczenow and Brad L. Johnson |
cond-mat/9508068 | Weighted two particle Green's functions in the CPA | We extend the two particle theory of disordered systems within the coherent
potential approximation CPA to obtain weighted contributions to averaged two
particle resolvents which arise from separate alloy components. Starting from
first principles in a model of diagonal disorder and the single site
approximation for a ... | 1995-08-17 | 2007-05-23 | [
"cond-mat"
] | N.F. Schwabe and R.J. Elliott (Department of Physics, University of
Oxford, Theoretical Physics, Oxford, UK) |
cond-mat/9508057 | Giant Microwave Absorption in Metallic Grains: Relaxation Mechanism | We show that the low frequency microwave absorption of an ensemble of small
metallic grains at low temperatures is dominated by a mesoscopic relaxation
mechanism. Giant positive magnetoresistance and very strong temperature
dependence of the microwave conductivity is predicted. | 1995-08-16 | 2009-10-28 | [
"cond-mat"
] | F. Zhou, B. Spivak, N. Taniguchi and B. L. Altshuler (Univ. of
Washington, MIT, and NECI) |
cond-mat/9508060 | Composite Fermions and Landau Level Mixing in the Fractional Quantum
Hall Effect | The reduction of the energy gap due to Landau level mixing, characterized by
the dimensionless parameter $\lambda = (e^2/\epsilon l_0)/\hbar\omega_c$, has
been calculated by variational Monte Carlo for the fractional quantum Hall
effect at filling fractions $\nu=1/3$ and 1/5 using a modified version of
Jain's composite... | 1995-08-16 | 2009-10-28 | [
"cond-mat"
] | V. Melik-Alaverdian and N.E. Bonesteel |
cond-mat/9508054 | The Hofstadter Energy Spectrum for an Interacting 2DEG | We study the effects of the Coulomb interactions between electrons on the
Hofstadter butterfly, which characterizes the subband structure of the Landau
levels of a two-dimensional electron gas in a perpendicular homogeneous
magnetic field and a periodic lateral superlattice potential. The interactions
essentially prese... | 1995-08-16 | 2007-05-23 | [
"cond-mat"
] | Vidar Gudmundsson (Science Institute, University of Iceland,
Reykjavik, Iceland) and Rolf R. Gerhardts (Max-Planck-Institut fuer
Festkoerperforschung, Stuttgart, Federal Republic of Germany) |
cond-mat/9508064 | Fluctuation Dissipation Theorem and The Dynamical Renormalization Group | The relation between a recently introduced dynamical real space
renormalization group and the fluctuation-dissipation theorem is discussed. An
apparent incompatibility is pointed out and resolved. | 1995-08-16 | 2009-10-28 | [
"cond-mat"
] | Achille Giacometti, Amos Maritan, Flavio Toigo and Jayanth R. Banavar |
cond-mat/9508053 | Fractional Quantum Hall Effect, Composite Fermions and Exotic Spinors | A topological interpretation of the electron--electron interaction under FQHE
conditions gives rise to the existence of some kind of composite fermions. The
interaction term is similar to the Coulomb interaction and produces punctures
in the configuration space which change its topology. Now the relevant
configuration ... | 1995-08-16 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Torsten Asselmeyer, and Georg He\ss |
cond-mat/9508055 | Topological Investigation of the Fractionally Quantized Hall
Conductivity | Using the fiber bundle concept developed in geometry and topology, the
fractionally quantized Hall conductivity is discussed in the relevant
many--particle configuration space. Electron-magnetic field and
electron-electron interactions under FQHE conditions are treated as functional
connections over the torus, the toru... | 1995-08-16 | 2016-08-31 | [
"cond-mat",
"hep-th"
] | T. Asselmeyer, and R. Keiper |
cond-mat/9508059 | Pulsed Magnetic Field Measurements of the Composite Fermion Effective
Mass | Magnetotransport measurements of Composite Fermions (CF) are reported in 50 T
pulsed magnetic fields. The CF effective mass is found to increase
approximately linearly with the effective field $B^*$, in agreement with our
earlier work at lower fields. For a $B^*$ of 14 T it reaches $1.6m_e$, over 20
times the band edge... | 1995-08-16 | 2009-10-28 | [
"cond-mat"
] | D.R. Leadley, M. van der Burgt, R.J. Nicholas, (Dept. of Physics,
Oxford University, UK) C.T. Foxon (Dept. of Physics, Nottingham University,
UK) and J.J. Harris (Dept. of Elec. Eng., University College London. UK) |
cond-mat/9508058 | On an exact criterion for choosing the hopping operator in the
four-slave-boson approach | We consider the $N$-component generalization of the four-slave-boson approach
to the Hubbard model, where $1/N$ acts as the small parameter that controls the
fluctuations about the saddle point, and address the problem of the appropriate
choice of the bosonic hopping operator $z_{i\g}$. By suitably reorganizing the
Foc... | 1995-08-16 | 2009-10-28 | [
"cond-mat"
] | E. Arrigoni and G. C. Strinati |
cond-mat/9508063 | Renormalization Group Methods: Landau-Fermi Liquid and BCS
Superconductor | This is the second part of the notes to the course on quantum theory of large
systems of non-relativistic matter taught by J. Fr\"{o}hlich at the 1994 Les
Houches summer school. It is devoted to a sketchy exposition of some of the
beautiful and important, recent results of J.Feldman and E.Trubowitz, and J.
Feldman, H. ... | 1995-08-16 | 2017-07-13 | [
"cond-mat",
"cond-mat.other",
"cond-mat.supr-con",
"hep-th",
"math-ph",
"math.MP"
] | J. Froehlich, T. Chen and M. Seifert |
cond-mat/9508061 | Spin Dynamics of Hole Doped ${\rm Y_{2-x} Ca_x Ba Ni O_5}$ | We propose an electronic model for the recently discovered hole doped
compound ${\rm Y_{2-x} Ca_x Ba Ni O_5 }$. From a multiband Hamiltonian with
oxygen and nickel orbitals, a one band model is derived. Holes are described
using Zhang-Rice-like S=1/2 states at the nickels propagating on a S=1 spin
chain. Using numerica... | 1995-08-16 | 2009-10-28 | [
"cond-mat"
] | E. Dagotto, J. Riera, A. Sandvik and A. Moreo |
cond-mat/9508056 | Quantum Transport in Disordered Wires: Equivalence of One-Dimensional
Sigma Model and Dorokhov-Mello-Pereyra-Kumar Equation | The two known non-perturbative theories of localization in disordered wires,
the Fokker-Planck approach due to Dorokhov, Mello, Pereyra, and Kumar, and the
field-theoretic approach due to Efetov and Larkin, are shown to be equivalent
for all symmetry classes. The equivalence had been questioned as a result of
field-the... | 1995-08-16 | 2009-10-28 | [
"cond-mat"
] | P.W. Brouwer and K. Frahm |
cond-mat/9508051 | Spin effects in a confined 2DEG: Enhancement of the g-factor,
spin-inversion states and their far-infrared absorption | We investigate several spin-related phenomena in a confined two-dimensional
electron gas (2DEG) using the Hartree-Fock approximation for the mutual Coulomb
interaction of the electrons. The exchange term of the interaction causes a
large splitting of the spin levels whenever the chemical potential lies within
a Landau ... | 1995-08-15 | 2007-05-23 | [
"cond-mat"
] | Vidar Gudmundsson (Science Institute, University of Iceland,
Reykjavik, Iceland) and Juan Jose Palacios (Department of Physics, Indiana
University at Bloomington, IN, USA) |
cond-mat/9508052 | The effect of inelastic processes on tunneling | We study an electron that interacts with phonons or other linear or nonlinear
excitations as it resonantly tunnels. The method we use is based on mapping a
many-body problem in a large variational space exactly onto a one-body problem.
The method is conceptually simpler than previous Green's function approaches,
and al... | 1995-08-15 | 2009-10-28 | [
"cond-mat"
] | J. Bonca and S. A. Trugman |
cond-mat/9508048 | Predictions for Neutron Scattering and Photoemission Experiments on
CuGeO_3 | Applying numerical techniques to a model recently proposed for the one
dimensional spin-Peierls compound CuGeO_3, we calculate dynamical properties
that can be directly compared with inelastic neutron scattering data and
angle-resolved photoemission experiments. The momentum and energy dependence of
the dynamical struc... | 1995-08-14 | 2009-10-28 | [
"cond-mat"
] | Stephan Haas and Elbio Dagotto |
cond-mat/9508047 | Antiferromagnetic spin ladders: crossover between spin S = 1/2 and S = 1
chains | We study a model of two weakly coupled isotropic spin-1/2 Heisenberg chains
with an antiferromagnetic coupling along the chains. It is shown that the
system always has a spectral gap. For the case of identical chains the model in
the continuous limit is equivalent to 4 decoupled noncritical Ising models. For
this case ... | 1995-08-14 | 2009-10-28 | [
"cond-mat"
] | D. G. Shelton, A. A. Nersesyan and A. M. Tsvelik |
cond-mat/9508049 | Drift, creep and pinning of a particle in a correlated random potential | The motion of a particle in a correlated random potential under the influence
of a driving force is investigated in mean field theory. The correlations of
the disorder are characterized by a short distance cutoff and a power law decay
with exponent $\gamma$ at large distances. Depending on temperature and
$\gamma$ , dr... | 1995-08-14 | 2009-10-28 | [
"cond-mat"
] | Heinz Horner |
cond-mat/9508046 | Density-dependent phonoriton states in highly excited semiconductors | The dynamical aspects of the phonoriton state in highly-photoexcited
semiconductors is studied theoretically. The effect of the exciton-exciton
interaction and nonbosonic character of high-density excitons are taken into
account. Using Green's function method and within the Random Phase
Approximation it is shown that t... | 1995-08-14 | 2015-06-25 | [
"cond-mat"
] | Nguyen Hong Quang and Nguyen Minh Khue |
cond-mat/9508050 | Interlayer tunneling in a non-Fermi-liquid metal | We study the effect of interlayer tunneling in the gauge theory describing a
quasi-two-dimensional paramagnetic metal close to a second-order or weakly
first-order antiferromagnetic phase boundary. In that theory, two species of
fermions have opposite (rather than equal) charges with respect to the gauge
field. We find... | 1995-08-14 | 2009-10-28 | [
"cond-mat"
] | S. Khlebnikov |
cond-mat/9508090 | Effect of impurity on current magnification property of mesoscopic open
rings | We have considered an open system consisting of a metallic ring coupled to
two electron reservoirs. We have recently shown that in the presence of a
transport current, circulating currents can flow in such a ring even in the
absence of magnetic field. This is related to the current magnification effect
in the ring. In ... | 1995-08-14 | 2009-10-28 | [
"cond-mat"
] | T. P. Pareek, P. Singha Deo and A. M. Jayannavar |
cond-mat/9508045 | Superconductivity of nearly 2-D systems | Effect of geometry on the superconductivity is considered. It is shown that
the for nearly two dimensional BCS systems the critical temperature is rapidly
increased with decreasing the thickness of the layer. The result is expected to
be useful in the explanation of high-Tc conductivity of the ceramic compounds. | 1995-08-13 | 2007-05-23 | [
"cond-mat"
] | N.M.Khue, Le Ngoc Minh, Tran Tri Lan, Do Huu Nha |
cond-mat/9508042 | Slave-particle quantization and sum rules in the t-J model | In the framework of constrained systems, we give the classical Hamiltonian
formulation of slave-particle models and their correct quantization. The
electron-momentum distribution function in the t-J and Hubbard models is then
studied in the framework of slave-particle approaches and within the decoupling
scheme. We sho... | 1995-08-11 | 2009-10-28 | [
"cond-mat"
] | J.C. Le Guillou and E. Ragoucy |
cond-mat/9508041 | Current Distribution in the Three-Dimensional Random Resistor Network at
the Percolation Threshold | We study the multifractal properties of the current distribution of the
three-dimensional random resistor network at the percolation threshold. For
lattices ranging in size from $8^3$ to $80^3$ we measure the second, fourth and
sixth moments of the current distribution, finding {\it e.g.\/} that
$t/\nu=2.282(5)$ where ... | 1995-08-11 | 2009-10-28 | [
"cond-mat"
] | G. George Batrouni, Alex Hansen and Brond Larson |
cond-mat/9508044 | Magnetism of Superconducting UPt3 | The phase diagram of superconducting $U\!Pt_{3}$ in pressure-temperature
plane, together with the neutron scattering data is studied within a two
component superconducting order parameter scenario. In order to give a
qualitative explanation to the experimental data a set of two linearly
independent antiferromagnetic mo... | 1995-08-11 | 2009-10-28 | [
"cond-mat"
] | G. Haran (Politechnika Wroclawska, Poland), G.A. Gehring (University
of Sheffield, UK) |
cond-mat/9508040 | Ground-State Properties of Magnetically Trapped Bose-Condensed Rubidium
Gas | We give a quantitative account of the ground-state properties of the dilute
magnetically trapped $^{87}$Rb gas recently cooled and Bose-Einstein condensed
at nanokelvin-scale temperatures. Using simple scaling arguments, we show that
at large particle number the kinetic energy is a small perturbation, and find a
spatia... | 1995-08-11 | 2009-10-28 | [
"cond-mat"
] | Gordon Baym and Christopher Pethick |
cond-mat/9508043 | Superfluid anisotropy in YBCO: Evidence for pair tunneling
superconductivity | Proximity effect and pair tunneling models are applied as alternative
scenarios to explain the recently measured $ab$-plane and $c$-axis components
of the superfluid tensor in Copper-Oxide superconductors which contain chains,
such as $YBa_2Cu_3O_{6.95}$. It is argued that conventional proximity effect
models, which co... | 1995-08-11 | 2009-10-28 | [
"cond-mat"
] | T. Xiang and J. M. Wheatley |
cond-mat/9508032 | Structure and Magnetism of Fe/Si Multilayers Grown by Ion-Beam
Sputtering | Ion-beam sputtering has been used to prepare Fe/Si multilayers on a variety
of substrates and over a wide range of temperatures. Small-angle x-ray
diffraction and transmission electron microscopy experiments show that the
layers are heavily intermixed although a composition gradient is maintained.
When the spacer layer... | 1995-08-10 | 2009-10-28 | [
"cond-mat",
"mtrl-th"
] | A. Chaiken, R.P. Michel, and M.A. Wall |
cond-mat/9508034 | Cooling rate dependence of the internal structure of a Lennard-Jones
glass | Using molecular dynamics computer simulations we investigate the dependence
of bulk properties of a Lennard-Jones glass on the cooling rate with which the
glass was produced. By studying the clusters formed by the nearest neighbor
shells of the particles, we show that the internal structure of the glass
depends on the ... | 1995-08-10 | 2009-10-28 | [
"cond-mat"
] | K. Vollmayr, W. Kob and K. Binder (Intitute of Physics, Mainz,
Germany) |
cond-mat/9508038 | Single-hole properties in the $t$-$J$ and strong-coupling models | We report numerical results for the single-hole properties in the $t$-$J$
model and the strong-coupling approximation to the Hubbard model in two
dimensions. Using the hopping basis with over $10^6$ states we discuss (for an
infinite system) the bandwidth, the leading Fourier coefficients in the
dispersion, the band ma... | 1995-08-10 | 2009-10-28 | [
"cond-mat"
] | B.M. Elrick and A.E. Jacobs |
cond-mat/9508037 | An Accurate Determination of the Exchange Constant in Sr_2CuO_3 from
Recent Theoretical Results | Data from susceptibility measurements on Sr_2CuO_3 are compared with recent
theoretical predictions for the magnetic susceptibility of the
antiferromagnetic spin-1/2 Heisenberg chain. The experimental data fully
confirms the theoretical predictions and in turn we establish that Sr_2CuO_3
behaves almost perfectly like a... | 1995-08-10 | 2009-10-28 | [
"cond-mat"
] | Sebastian Eggert (Chalmers TH, Sweden) |
cond-mat/9508033 | Integrability and coherence of hopping between 1D correlated electrons
systems | We present numerical evidence that the hopping of electrons between chains
described by the $t-J$ model is coherent in the integrable cases ($J=0$ and
$J=2$) and essentially incoherent otherwise. This effect is {\it not} related
to the value of the exponent $\alpha$, (which is restricted to the interval
[0,1/8] when $0... | 1995-08-10 | 2009-10-28 | [
"cond-mat"
] | Frederic Mila and Didier Poilblanc |
cond-mat/9508039 | Theoretical and numerical studies of chemisorption on a line with
precursor layer diffusion | We consider a model for random deposition of monomers on a line with
extrinsic precursor states. As the adsorbate coverage increases, the system
develops non-trivial correlations due to the diffusion mediated deposition
mechanism. In a numeric simulation, we study various quantities describing the
evolution of the isla... | 1995-08-10 | 2009-10-28 | [
"cond-mat"
] | Joao A. N. Filipe and Geoff J. Rodgers (Brunel University) |
cond-mat/9508036 | Numerical Evidence for Spontaneously Broken Replica Symmetry in 3D Spin
Glasses | By numerical simulations of the $3d$ Ising spin glass we find evidence that
spontaneous replica symmetry breaking theory and not the droplet model
describes with good accuracy the equilibrium behavior of the system. | 1995-08-10 | 2009-10-28 | [
"cond-mat"
] | E. Marinari, G. Parisi, F. Ritort and J. Ruiz-Lorenzo |
cond-mat/9508035 | Resonances in the current-voltage characteristics of a dissipative
Josephson junction | The I-V characteristics of a Josephson junction shunted by an Ohmic resistor
shows sharp peaks when levels in neighbouring wells are crossing. We consider
the shape and size of these peaks using a double-well model where the wells are
given in parabolic approximation. The friction of arbitrary strength is
included by t... | 1995-08-10 | 2009-10-28 | [
"cond-mat"
] | J. M\"ullers and A. Schmid |
cond-mat/9508029 | Numerical Study of the Spin-1 Antiferromagnetic Heisenberg Chain with a
Spin-1/2 Impurity | Low-lying excited states as well as the ground state of the spin-1
antiferromagnetic Heisenberg chain with a spin-1/2 impurity are studied by
means of a method of numerical diagonalization. The isotropic nearest-neighbor
exchange coupling plus the uniaxial single-ion-type anisotropy energy is
assumed for the host-syste... | 1995-08-09 | 2009-10-28 | [
"cond-mat"
] | Takashi Tonegawa, Makoto Kaburagi |
cond-mat/9508031 | Kinetic Ising Systems as Models of Magnetization Switching in Submicron
Ferromagnets | Recently experimental techniques, such as magnetic force microscopy (MFM),
have enabled the magnetic state of individual sub-micron particles to be
resolved. Motivated by these experimental developments, we use Monte Carlo
simulations of two-dimensional kinetic Ising ferromagnets to study the magnetic
relaxation in a n... | 1995-08-09 | 2009-10-28 | [
"cond-mat"
] | Howard L. Richards, Scott W. Sides, Mark A. Novotny, and Per Arne
Rikvold |
cond-mat/9508030 | Is there an exponentially large Kondo screening cloud ? | We make a precise scaling conjecture, based on renormalization group ideas,
regarding the screening cloud around an impurity spin in the Kondo effect and
test it numerically using the Density Matrix Renormalization Group method. | 1995-08-09 | 2007-05-23 | [
"cond-mat"
] | Erik Sorensen (IU Bloomington), Ian Affleck (UBC) |
cond-mat/9508028 | Low-frequency admittance of quantized Hall conductors | We present a current and charge conserving theory for the low frequency
admittance of a two-dimensional electron gas connected to ideal metallic
contacts and subject to a quantizing magnetic field. In the framework of the
edge-channel picture, we calculate the admittance up to first order with
respect to frequency. The... | 1995-08-09 | 2009-10-28 | [
"cond-mat"
] | T. Christen and M. Buttiker |
cond-mat/9508026 | Random Matrix Theory of a Chaotic Andreev Quantum Dot | A new universality class distinct from the standard Wigner-Dyson ones is
identified. This class is realized by putting a metallic quantum dot in contact
with a superconductor, while applying a magnetic field so as to make the
pairing field effectively vanish on average. A random-matrix description of the
spectral and t... | 1995-08-08 | 2009-10-28 | [
"cond-mat"
] | Alexander Altland and Martin R. Zirnbauer |
cond-mat/9508025 | Diffusion processes and growth on stepped metal surfaces | We study the dynamics of adatoms in a model of vicinal (11m) fcc metal
surfaces. We examine the role of different diffusion mechanisms and their
implications to surface growth. In particular, we study the effect of steps and
kinks on adatom dynamics. We show that the existence of kinks is crucially
important for adatom... | 1995-08-08 | 2009-10-28 | [
"cond-mat",
"mtrl-th"
] | J. Merikoski and T. Ala-Nissila |
cond-mat/9508023 | Molecular ordering of precursor films during spreading of tiny liquid
droplets | In this work we address a novel feature of spreading dynamics of tiny liquid
droplets on solid surfaces, namely the case where the ends of the molecules
feel different interactions to the surface. We consider a simple model of
dimers and short chain--like molecules which cannot form chemical bonds with
the surface. We ... | 1995-08-07 | 2009-10-28 | [
"cond-mat",
"chem-ph"
] | M. Haataja, J. A. Nieminen, and T. Ala-Nissila |
cond-mat/9508022 | Folding Transitions of Self-Avoiding Membranes | The phase structure of self-avoiding polymerized membranes is studied by
extensive Hybrid Monte Carlo simulations. Several folding transitions from the
flat to a collapsed state are found. Using a suitable order parameter and
finite size scaling theory, these transitions are shown to be of {\em first
order}. The phase ... | 1995-08-07 | 2009-10-28 | [
"cond-mat"
] | Christian M\"unkel and Dieter W. Heermann |
cond-mat/9508020 | Josephson Current and Proximity Effect in Luttinger Liquids | A theory describing a one-dimensional Luttinger liquid in contact with
superconductor is developed. Boundary conditions for the fermion fields
describing Andreev reflection at the contacts are derived and used to construct
a bosonic representation of the fermions. The Josephson current through a
superconductor/Luttinge... | 1995-08-07 | 2016-08-31 | [
"cond-mat"
] | Dmitrii L. Maslov, Michael Stone, Paul M. Goldbart, and Daniel Loss |
cond-mat/9508024 | Scaling of Energy Barriers for Flux Lines and Other Random Systems | Using a combination of analytic arguments and numerical simulations, we
determine lower and upper bounds for the energy barriers to the motion of a
defect line in a random potential at low temperatures. We study the cases of
magnetic flux lines in high-$T_{c}$ superconductors in 2 and 3 dimensions, and
of domain walls ... | 1995-08-07 | 2009-10-28 | [
"cond-mat"
] | Barbara Drossel and Mehran Kardar (MIT) |
cond-mat/9508021 | Bosonization of coupled electron-phonon systems | We calculate the single-particle Green's function of electrons that are
coupled to acoustic phonons by means of higher dimensional bosonization. This
non-perturbative method is {\it{not}} based on the assumption that the
electronic system is a Fermi liquid. For isotropic three-dimensional phonons we
find that the long-... | 1995-08-07 | 2009-10-28 | [
"cond-mat"
] | Peter Kopietz |
cond-mat/9508019 | Sound propagation in density wave conductors and the effect of
long-range Coulomb interaction | We study theoretically the sound propagation in charge- and spin-density
waves in the hydrodynamic regime. First, making use of the method of comoving
frame, we construct the stress tensor appropriate for quasi-one dimensional
systems within tight-binding approximation. Taking into account the screening
effect of the l... | 1995-08-06 | 2009-10-28 | [
"cond-mat"
] | A. Virosztek and K. Maki |
cond-mat/9508018 | Theory of strong inelastic co-tunneling | We develop a theory of the conductance of a quantum dot connected to two
leads by single-mode quantum point contacts. If the contacts are in the regime
of perfect transmission, the conductance shows no Coulomb blockade oscillations
as a function of the gate voltage. In the presence of small reflection in both
contacts,... | 1995-08-06 | 2009-10-28 | [
"cond-mat"
] | A. Furusaki and K. A. Matveev (MIT) |
cond-mat/9508017 | Charge Density Wave in Two-Dimensional Electron Liquid in Weak Magnetic
Field | We study the ground state of a clean two-dimensional electron liquid in a
weak magnetic field where $N \gg 1$ lower Landau levels are completely filled
and the upper level is partially filled. It is shown that the electrons at the
upper Landau level form domains with filling factor equal to one and zero. The
domains al... | 1995-08-05 | 2009-10-28 | [
"cond-mat"
] | A. A. Koulakov, M. M. Fogler, and B. I. Shklovskii |
cond-mat/9508015 | Non linear dynamics of vortices in superconductors with short coherence
length | In superconductors where the coherence length is comparable to the Fermi
wavelength, the vortex viscosity depends on the velocity of the vortex, leading
to non linear equations of motion. The trajectories of vortices driven by a. c.
fields show a variety of behaviors as function of frequency. Finite
pertubations give r... | 1995-08-04 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | F. Guinea and Yu. Pogorelov |
cond-mat/9508014 | Critical phenomena of the hard-sphere lattice gas on the simple cubic
lattice | We study the critical phenomena of the hard-sphere lattice gas on the simple
cubic lattice with nearest neighbour exclusion by the Monte Carlo method. We
get the critical exponents, $\beta / \nu$ = 0.313(9) and $\gamma / \nu$ =
2.37(2), where $\beta$ is the critical exponent for the staggered density,
$\gamma$ for the ... | 1995-08-04 | 2015-06-25 | [
"cond-mat"
] | Atsushi Yamagata |
cond-mat/9508016 | A reaction-diffusion model for the hydration/setting of cement | We propose a heterogeneous reaction-diffusion model for the hydration and
setting of cement. The model is based on diffusional ion transport and on
cement specific chemical dissolution/precipitation reactions under spatial
heterogeneous solid/liquid conditions. We simulate the spatial and temporal
evolution of precipit... | 1995-08-04 | 2009-10-28 | [
"cond-mat",
"chem-ph",
"mtrl-th"
] | F. Tzschichholz, H.J. Herrmann and H. Zanni |
cond-mat/9508012 | Multicomponent Calogero Model of $B_N$-Type Confined in Harmonic
Potential | A new one-dimensional model, the multicomponent Calogero model of $B_N$-type
confined in the harmonic potential, is introduced. The Lax pair of this model
is determined, and then a set of functionally independent conserved operators
are constructed. Moreover, the energy spectrums of the above model are obtained
by thre... | 1995-08-03 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Takashi Yamamoto |
cond-mat/9508011 | Prospects for Non--Fermi--Liquid Behavior of a Two Level Impurity in a
Metal | It has been claimed that an impurity hopping between two sites in a metal can
lead to non--Fermi liquid behavior if the bias between the two sites is tuned
to zero. Here it is shown that several extra tunnelling processes are allowed;
those involving bare impurity tunnelling as well as two--electron--assisted
tunnellin... | 1995-08-03 | 2009-10-28 | [
"cond-mat"
] | Aris L. Moustakas and Daniel S. Fisher (Harvard University) |
cond-mat/9508013 | Finite Size Analysis of Luttinger Liquids with a source of 2k_f
Scattering | Numerical analysis of the spectrum of large finite size Luttinger liquids
(g<1) in the presence of a single source of 2k_f scattering has been made
possible thanks to an effective integration of high degrees of freedom.
Presence of irrelevant operators and their manifestation in transport are
issues treated independent... | 1995-08-03 | 2009-10-28 | [
"cond-mat"
] | G. Gomez-Santos |
cond-mat/9508009 | Surface plasmon in 2D Anderson insulator with interactions | We study the effect of interactions on the zero-temperature a.c. conductivity
of 2D Anderson insulator at low frequencies. We show that the enhancement of
the real part of conductivity due to the Coulomb correlations in the occupation
numbers of localized states results in the change of the sign of imaginary part
withi... | 1995-08-02 | 2009-10-28 | [
"cond-mat"
] | T.V. Shahbazyan and M.E. Raikh |
cond-mat/9508010 | The Local Structure of Tilings and their Integer Group of Coinvariants | The local structure of a tiling is described in terms of a multiplicative
structure on its pattern classes. The groupoid associated to the tiling is
derived from this structure and its integer group of coinvariants is defined.
This group furnishes part of the $K_0$-group of the groupoid $C^*$-algebra for
tilings which ... | 1995-08-02 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Johannes Kellendonk |
cond-mat/9508003 | Self-organized critical and synchronized states in a nonequilibrium
percolation model | We introduce a nonequilibrium percolation model which shows a self-organized
critical (SOC) state and several periodic states. In the SOC state, the
correlation length diverges slower than the system size, and the corresponding
exponent depends non universally on the parameter of the model. The periodic
states contain ... | 1995-08-01 | 2009-10-28 | [
"cond-mat"
] | Siegfried Clar, Barbara Drossel, Franz Schwabl |
cond-mat/9508007 | Stability of the hard-sphere icosahedral quasilattice | The stability of the hard-sphere icosahedral quasilattice is analyzed using
the differential formulation of the generalized effective liquid approximation.
We find that the icosahedral quasilattice is metastable with respect to the
hard-sphere crystal structures. Our results agree with recent findings by
McCarley and A... | 1995-08-01 | 2009-10-28 | [
"cond-mat"
] | H. M. Cataldo and C. F. Tejero |
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