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/9303043 | Coulombically Interacting Electrons in a One-dimensional Quantum Dot | The spectral properties of up to four interacting electrons confined within a
quasi one--dimensional system of finite length are determined by numerical
diagonalization including the spin degree of freedom. The ground state energy
is investigated as a function of the electron number and of the system length.
The limita... | 1993-03-24 | 2009-10-22 | [
"cond-mat"
] | Wolfgang Haeusler, Bernhard Kramer, PTB Braunschweig |
cond-mat/9303041 | Scaling Properties of the Two-Chain Model | Scaling properties of a self-dual field-theoretical model, describing two
weakl$spinless Luttinger chains, are studied. A crossover to a sine-Gordon
massive phase, with strongly developed two-particleinterchain correlations, is
described. It is argued that, in a wide range of the in-chain interaction,
renormalization o... | 1993-03-23 | 2009-10-22 | [
"cond-mat"
] | A.A.Nersesyan, A.Luther and F.V.Kusmartsev |
cond-mat/9303040 | Thermodynamical Properties of the Antiferromagnetic Heisenberg Model in
Dimensions d=1,2,3 | The evolution equation for the expectation values of the Boltzmann factor
between valence bond states is evaluated in lowest order of the dimer cluster
expansion. Explicit formulas are given for the internal energy and the specific
heat of the d-dimensional antiferromagnetic Heisenberg model. | 1993-03-23 | 2007-05-23 | [
"cond-mat"
] | M.Karbach, K.-H. M\"utter, P. Ueberholz, H.Kr\"oger |
cond-mat/9303039 | A New Approach to the Spin 1/2 Quantum Heisenberg Model | An evolution equation for the expectation values of the Boltzmann factor
between monomer valence bond states is derived. It contains the whole
information on the thermodynamical and magnetic properties of the spin
$\frac{1}{2}$ quantum Heisenberg model. A new approximation scheme is proposed
and studied in the thermody... | 1993-03-23 | 2008-02-03 | [
"cond-mat"
] | K.-H. M\"utter |
cond-mat/9303042 | Maximal Mean Field Solutions in the Random Field Ising Model: the
Pattern of the Symmetry Breaking | In this note we study the mean field equations for the $3d$ Random Field
Ising Model. We discuss the phase diagram of the model, and we address the
problem of finding if such equations admit more than one solution. We find two
different critical values of $\beta$: one where the magnetization takes a
non-zero expectatio... | 1993-03-23 | 2009-10-22 | [
"cond-mat",
"hep-lat",
"hep-th"
] | M. Guagnelli, E. Marinari and G. Parisi |
cond-mat/9303038 | Phase transitions in an exactly soluble one-dimensional exclusion
process | We consider an exclusion process, with particles injected with rate $\alpha$
at the origin and removed with rate $\beta$ at the right boundary of a
one-dimensional chain of sites. The particles are allowed to hop onto
unoccupied sites, to the right only. For the special case of $\alpha=\beta=1$
the model was solved pre... | 1993-03-23 | 2009-10-22 | [
"cond-mat"
] | G. Schuetz and E. Domany |
cond-mat/9303037 | Low Energy Dynamics of the Spinon-Gauge System | The normal phase of the high-$T_c$ cuprates is apparently not described by
Fermi liquid theory. It has been proposed that a dynamically generated gauge
field must appear in the effective field theory. Even a simple spinon-gauge
system is complicated, becoming strongly coupled at low energy. We show that in
a large-$n$ ... | 1993-03-21 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Joseph Polchinski |
cond-mat/9303036 | Analytical Solution of the Off-Equilibrium Dynamics of a Long Range
Spin-Glass Model | We study the non-equilibrium relaxation of the spherical spin-glass model
with p-spin interactions in the $N \rightarrow \infty$ limit. We analytically
solve the asymptotics of the magnetization and the correlation and response
functions for long but finite times. Even in the thermodynamic limit the system
exhibits `we... | 1993-03-20 | 2009-10-22 | [
"cond-mat"
] | L. F. Cugliandolo and J. Kurchan |
cond-mat/9303032 | Impurities in "Odd-Pairing" Superconductors | We present the results of theoretical analysis of normal impurities effects
in superconductors with the gap being an odd function of k-k_{F}. This model
proposed by Mila and Abrahams leads to the possibility of pairing in the
presence of arbitrarily strong short-range repulsion between electrons and may
be applied to h... | 1993-03-19 | 2008-02-03 | [
"cond-mat"
] | E.Z.Kuchinskii, M.V.Sadovskii |
cond-mat/9303033 | No Far-Infrared-Spectroscopic Gap in Clean and Dirty High-T$_C$
Superconductors | We report far infrared transmission measurements on single crystal samples
derived from Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8}$. The impurity scattering rate of
the samples was varied by electron-beam irradiation, 50MeV $^{16}$O$^{+6}$ ion
irradiation, heat treatment in vacuum, and Y doping. Although substantial
changes in t... | 1993-03-19 | 2009-10-22 | [
"cond-mat"
] | D. Mandrus, Michael C. Martin, C. Kendziora, D. Koller, L. Forro, and
L. Mihaly (SUNY at Stony Brook) |
cond-mat/9303035 | Universal Amplitude Combinations for Self-Avoiding Walks, Polygons and
Trails | We give exact relations for a number of amplitude combinations that occur in
the study of self-avoiding walks, polygons and lattice trails. In particular,
we elucidate the lattice-dependent factors which occur in those combinations
which are otherwise universal, show how these are modified for oriented
lattices, and gi... | 1993-03-19 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | John L. Cardy and Anthony J. Guttmann |
cond-mat/9303034 | Unusual low-temperature thermopower in the one-dimensional Hubbard model | The low-temperature thermoelectric power of the repulsive-interaction
one-dimensional Hubbard model is calculated using an asymptotic Bethe ansatz
for holons and spinons. The competition between the entropy carried by the
holons and that carried by the backflow of the spinons gives rise to an unusual
temperature and do... | 1993-03-19 | 2007-05-23 | [
"cond-mat"
] | C. A. Stafford |
cond-mat/9303031 | The Kagome Antiferromagnet with Defects: Satisfaction, Frustration, and
Spin Folding in a Random Spin System | It is shown that site disorder induces noncoplanar states, competing with the
thermal selection of coplanar states, in the nearest neighbor, classical kagome
Heisenberg antiferromagnet (AFM). For weak disorder, it is found that the
ground state energy is the sum of energies of separately satisfied triangles of
spins. T... | 1993-03-18 | 2009-10-22 | [
"cond-mat"
] | E.F. Shender, V.B. Cherepanov, P.C.W. Holdsworth, and A.J. Berlinsky |
cond-mat/9303029 | Binding of holes and pair spectral function in the t-J model | Clusters of the two-dimensionnal t--J model with 2 holes and up to 26 sites
are diagonalized using a Lanczos algorithm. The behaviour of the binding energy
with system size suggests the existence of a finite critical value of J above
which binding occurs in the bulk. Only the d-wave pair field operator acting on
the He... | 1993-03-17 | 2009-10-22 | [
"cond-mat"
] | Didier POILBLANC (Laboratoire de Physique Quantique, Universite Paul
Sabatier, 31062 Toulouse, France) |
cond-mat/9303030 | Angular Momentum Distribution Function of the Laughlin Droplet | We have evaluated the angular-momentum distribution functions for finite
numbers of electrons in Laughlin states. For very small numbers of electrons
the angular-momentum state occupation numbers have been evaluated exactly while
for larger numbers of electrons they have been obtained from Monte-Carlo
estimates of the ... | 1993-03-17 | 2009-10-22 | [
"cond-mat"
] | Sami Mitra and A. H. MacDonald (Department of Physics, Indiana
University, Bloomington) |
cond-mat/9303028 | Magnetoconductivity of quantum wires with elastic and inelastic
scattering | We use a Boltzmann equation to determine the magnetoconductivity of quantum
wires. The presence of a confining potential in addition to the magnetic field
removes the degeneracy of the Landau levels and allows one to associate a group
velocity with each single-particle state. The distribution function describing
the oc... | 1993-03-16 | 2009-10-22 | [
"cond-mat"
] | Henrik Bruus, Karsten Flensberg, and Henrik Smith |
cond-mat/9303027 | Method for Measuring the Momentum-Dependent Relative Phase of the
Superconducting Gap of High-Temperature Superconductors | The phase variation of the superconducting gap over the (normal) Fermi
surface of the high-temperature superconductors remains a significant
unresolved question. Is the phase of the gap constant, does it change sign, or
is it perhaps complex? A detailed answer to this question would provide
important constraints on var... | 1993-03-15 | 2009-10-22 | [
"cond-mat"
] | M.E. Flatte', S. Quinlan, D.J. Scalapino |
cond-mat/9303024 | Prediction of Peptide Conformation by the Multicanonical Algorithm | We test the effectiveness of the multicanonical algorithm for the tertiary
structure prediction of peptides and proteins. As a simple example we study
Met-enkephalin. The lowest-energy conformation obtained agrees with that
determined by other methods such as Monte Carlo simulated annealing. But unlike
to simulated ann... | 1993-03-13 | 2007-05-23 | [
"cond-mat",
"q-bio"
] | Ulrich H.E. Hansmann and Yuko Okamoto |
cond-mat/9303025 | Study of +/-J Ising Spin Glasses via Multicanonical Ensemble | We performed numerical simulations of 2D and 3D Edwards-Anderson spin glass
models by using the recently developed multicanonical ensemble. Our ergodicity
times increase with the lattice size approximately as $V^3$. The energy,
entropy and other physical quantities are easily calculable at all temperatures
from a singl... | 1993-03-13 | 2019-08-17 | [
"cond-mat"
] | Tarik Celik, Ulrich H.E. Hansmann and Bernd Berg |
cond-mat/9303026 | Multicanonical Simulation of the Van Hemmen Spin Glass | We studied the performance of the multicanonical algorithm by simulating the
van Hemmen spin glass model and reproduced the exact results for this mean
field model. Physical quantities such as energy density, specific heat,
susceptibility and order parameters are evaluated at all temperatures. | 1993-03-13 | 2007-05-23 | [
"cond-mat",
"hep-lat"
] | Mohammad Katoot, Ulrich H.E. Hansmann and Tarik Celik |
cond-mat/9303023 | Towards an experimental measure of the number of metastable states in
spin-glasses ? | We show that an 'ergodic' time scale can be extracted from the aging
experiments on spin-glasses. This is the time for which a significant fraction
of the metastable states have been visited. Experiments suggest that the number
of metastable states per independent subsystem is $\simeq 10^{12}-10^{14}$. For
our insulati... | 1993-03-12 | 2009-10-22 | [
"cond-mat"
] | J.P. Bouchaud, E. Vincent, J. Hammann |
cond-mat/9303022 | Structural and ultrametric properties of twenty(L-alanine) | We study local energy minima of twenty(L-alanine). The minima are generated
using high-temperature Molecular Dynamics and Chain-Growth Monte Carlo
simulations, with subsequent minimization. We find that the lower-energy
configurations are $ \alpha $-helices for a wide range of dielectric constant
values $ (\epsilon = 1... | 1993-03-11 | 2009-10-22 | [
"cond-mat"
] | B. Velikson, J. Bascle, T. Garel, H. Orland |
cond-mat/9303019 | Honeycomb lattice solvable models | We construct solvable models on the honeycomb lattice by combining three
faces of the square lattice solvable models into a hexagon face. These models
contain two independent, anisotropy controlling, spectral parameters and their
transfer matrices with different spectral parameters commute with each other.
At the criti... | 1993-03-10 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Kyung-Hoon Kwon and Doochul Kim |
cond-mat/9303018 | Dynamics of Phase Separation of Crystal Surfaces | We investigate the dynamical evolution of a thermodynamically unstable
crystal surface into a hill-and-valley structure. We demonstrate that, for
quasi one-dimensional ordering, the equation of motion maps exactly to the
modified Cahn-Hilliard equation describing spinodal decomposition. Orderings in
two dimensions foll... | 1993-03-09 | 2009-10-22 | [
"cond-mat"
] | Fong Liu and H. Metiu |
cond-mat/9303014 | Quantum Antiferromagnets in Two Dimensions | These are lectures presented at the summer course on ``Low Dimensional Quantum Field Theories for Condensed Matter Physicists'', 24 Aug. to 4 Sep. 1992, Trieste, Italy. I review recent work, performed in collaboration primarily with N. Read and Jinwu Ye, on the properties of quantum antiferromagnets in two dimensions. ... | 1993-03-09 | 2025-09-08 | [
"cond-mat"
] | Subir Sachdev |
cond-mat/9303016 | In-Situ Infrared Transmission Study of Rb- and K-Doped Fullerenes | We have measured the four IR active $C_{60}$ molecular vibrations in
$M_{x}C_{60}$ $(M = K, Rb)$ as a function of doping $x$. We observe
discontinuous changes in the vibrational spectra showing four distinct phases
(presumably $x = 0, 3, 4$, and 6). The $1427cm^{-1}$ and $576cm^{-1}$ modes
show the largest changes shif... | 1993-03-09 | 2009-10-22 | [
"cond-mat"
] | Michael C. Martin, Daniel Koller and L. Mihaly (Department of Physics,
SUNY, Stony Brook) |
cond-mat/9303015 | Delocalization of Flux Lines from Extended Defects by Bulk Randomness | We study the delocalization by bulk randomness of a single flux line (FL)
from an extended defect, such as a columnar pin or twin plane. In three
dimensions, the FL is always bound to a planar defect, while there is an
unpinning transition from a columnar pin. Transfer matrix simulations confirm
this picture, and indic... | 1993-03-09 | 2009-10-22 | [
"cond-mat"
] | Leon Balents and Mehran Kardar |
cond-mat/9303017 | Histogram Monte Carlo study of multicritical behavior in the hexagonal
easy-axis Heisenberg antiferromagnet | The results of a detailed histogram Monte-Carlo study of critical-fluctuation
effects on the magnetic-field temperature phase diagram associated with the
hexagonal Heisenberg antiferromagnet with weak axial anisotropy are reported.
The multiphase point where three lines of continuous transitions merge at the
spin-flop ... | 1993-03-09 | 2009-10-22 | [
"cond-mat"
] | A. Mailhot, M.L. Plumer, and A. Caill\'e |
cond-mat/9303011 | Growth Laws for Phase Ordering | We determine the characteristic length scale, $L(t)$, in phase ordering
kinetics for both scalar and vector fields, with either short- or long-range
interactions, and with or without conservation laws. We obtain $L(t)$
consistently by comparing the global rate of energy change to the energy
dissipation from the local e... | 1993-03-08 | 2009-10-22 | [
"cond-mat"
] | A.J. Bray and A.D. Rutenberg |
cond-mat/9303010 | Phase diagram of the S=1/2 quantum spin chain with bond alternation | We study the ground state properties of the bond alternating $S=1/2$ quantum
spin chain whose Hamiltonian is H=\sum_j (S_{2j}^x S_{2j+1}^x +S_{2j}^y
S_{2j+1}^y +\lambda S_{2j}^z S_{2j+1}^z ) +\beta \sum_j {\bf S}_{2j-1} \cdot
{\bf S}_{2j} . When $\beta=0$, the ground state is a collection of local
singlets with a finit... | 1993-03-08 | 2009-10-22 | [
"cond-mat"
] | M.Yamanaka, Y.Hatsugai and M.Kohmoto |
cond-mat/9303012 | Polaron excitations in doped C60: Effects of disorders | Effects on C60 by thermal fluctuations of phonons, misalignment of molecules
in a crystal, and other intercalated impurities are simulated by disorder
potentials. The SSH model for doped C60 is solved with gaussian bond and site
disorders. Polarons and dimerizations in lightly doped cases (C60^{-1,-2}) are
relatively s... | 1993-03-08 | 2007-05-23 | [
"cond-mat"
] | Kikuo Harigaya (Department of Physics, University of Sheffield, UK,
and ETL, Japan) |
cond-mat/9303009 | Crossover from Rate-Equation to Diffusion-Controlled Kinetics in
Two-Particle Coagulation | We develop an analytical diffusion-equation-type approximation scheme for the
one-dimensional coagulation reaction A+A->A with partial reaction probability
on particle encounters which are otherwise hard-core. The new approximation
describes the crossover from the mean-field rate-equation behavior at short
times to the... | 1993-03-06 | 2010-10-12 | [
"cond-mat"
] | V. Privman, C.R. Doering and H.L. Frisch |
cond-mat/9303007 | Electrostatic screening in fullerene molecules | The screening properties of fullerene molecules are described by means of a
continuum model which uses the electronic wavefunctions of planar graphite as a
starting point. The long distance behavior of the system gives rise to a
renormalizable theory, which flows towards a non trivial fixed point. Its
existence implies... | 1993-03-05 | 2015-06-25 | [
"cond-mat"
] | J. Gonzalez, F. Guinea and M. A. H. Vozmediano |
cond-mat/9303008 | The (001) surface of alpha-Ga is covered with GaIII | We propose, based on ab initio calculations, that the ground state (001)
surface of $\alpha$-Ga should be covered by two layers of GaIII, a denser phase
which is stable in the bulk only at high pressure and temperature. We discuss
how this novel prediction can explain recent STM observations, including
anomalous therma... | 1993-03-05 | 2009-10-22 | [
"cond-mat"
] | M.Bernasconi, G.L. Chiarotti, and E. Tosatti |
cond-mat/9303006 | Two-Phonon States in Alkali-Metal Clusters | Two phonon-states of alkali-metal clusters (treated as jellium spheres) are
calculated by using a method based on a perturbative construction of periodic
orbits of the time-dependent mean-field equations. Collective vibrations with
various multipolarities in charged $Na^+_{21}$ are considered. | 1993-03-04 | 2007-05-23 | [
"cond-mat"
] | Abdellatif Abada and Dominique Vautherin |
cond-mat/9303020 | Van Hove Excitons and High-T$_c$ Superconductivity: VIIIC Dynamic
Jahn-Teller Effects vs Spin-Orbit Coupling in the LTO Phase of
La$_{2-x}$Sr$_x$CuO$_4$ | The possible role of the van Hove singularity (vHs) in stabilizing the
low-temperature orthorhombic (LTO) phase transition in
La$_{2-x}$\-Sr$_x$\-CuO$_ 4$ (LSCO) is discussed. It is found that the vHs can
drive a structural distortion in two different ways, either due to spin-orbit
coupling or to dynamic Jahn-Teller (J... | 1993-03-03 | 2009-10-22 | [
"cond-mat"
] | R.S. Markiewicz (Dept. of Physics, Northeastern University) |
cond-mat/9303021 | Van Hove Exciton-Cageons and High-T$_c$ Superconductivity: VIIID
Solitons and Nonlinear Dynamics | The low-temperature orthorhombic (LTO) phase transition in
La$_{2-x}$Sr$_x$CuO$_4$ can be interpreted as a dynamic Jahn-Teller effect, in
which the degenerate electronic states are associated with the large densities
of states at the two van Hove singularities. The equations describing this
phase are strongly nonlinear... | 1993-03-03 | 2009-10-22 | [
"cond-mat"
] | R.S. Markiewicz (Dept. of Physics, Northeastern University) |
cond-mat/9303013 | Giant Shapiro Resonances in a Flux Driven Josephson Junction Necklace | We present a detailed study of the dynamic response of a ring of $N$ equally
spaced Josephson junctions to a time-periodic external flux, including
screening current effects. The dynamics are described by the resistively
shunted Josephson junction model, appropriate for proximity effect junctions,
and we include Farada... | 1993-03-02 | 2009-10-22 | [
"cond-mat"
] | G. Chu and Jorge V. Jose (Dept. of Physics, Northeastern University) |
cond-mat/9303005 | Dynamic Structure Function in 3he-4he Mixtures | Relevant features of the dynamic structure function $S(q,\omega)$ in
$^3$He-$^4$He mixtures at zero temperature are investigated starting from known
properties of the ground state. Sum rules are used to fix rigorous constraints
to the different contributions to $S(q,\omega)$, coming from $^3$He and $^4$He
elementary ex... | 1993-03-02 | 2009-10-22 | [
"cond-mat"
] | J.Boronat, F.Dalfovo, F.Mazzanti, and A.Polls |
cond-mat/9303004 | Conformal Invariance in Periodic Quantum Chains | We show how conformal invariance predicts the functional form of two-point
correlators in one-dimensional periodic quantum systems. Numerical evidence for
this functional form in a wide class of models --- including long-ranged ones
--- is given and it is shown how this may be used to significantly speed up
calculation... | 1993-03-02 | 2007-05-23 | [
"cond-mat"
] | Rudolf A. R"omer and Bill Sutherland |
cond-mat/9303001 | Magnetic-Field Induced First-Order Transition in the Frustrated XY Model
on a Stacked Triangular Lattice | The results of extensive Monte Carlo simulations of magnetic-field induced
transitions in the xy model on a stacked triangular lattice with
antiferromagnetic intraplane and ferromagnetic interplane interactions are
discussed. A low-field transition from the paramagnetic to a 3-state (Potts)
phase is found to be very we... | 1993-03-01 | 2009-10-22 | [
"cond-mat"
] | M.L. Plumer, A. Mailhot, and A. Caill\'e |
cond-mat/9303002 | Luttinger Liquid Instability in the One Dimensional t-J Model | We study the t-J model in one dimension by numerically projecting the true
ground state from a Luttinger liquid trial wave function. We find the model
exhibits Luttinger liquid behavior for most of the phase diagram in which
interaction strength and density are varied. However at small densities and
high interaction st... | 1993-03-01 | 2009-10-22 | [
"cond-mat"
] | C. Stephen Hellberg and E. J. Mele |
cond-mat/9303003 | Infinite Volume Extrapolations of Finite Cluster Calculations, ---How
Correct are These? | Extrapolations of numerical data obtained from finite cluster calculations to
the infinite volume limit can often give incorrect results. We discuss four
separate cases: (a) the intensity of the lowest two-photon absorption in the
infinite polyene, (b) bond alternation in the infinite polyene, (c) Cooper type
pairing i... | 1993-03-01 | 2007-05-23 | [
"cond-mat"
] | S. Mazumdar, F. Guo, D. Guo, K. -C. Ung and J. Tinka Gammel |
cond-mat/9302039 | Interface Depinning in a Disordered Medium - Numerical Results | We propose a lattice model to study the dynamics of a driven interface in a
medium with random pinning forces. For driving forces F smaller than a
threshold force F_c the whole interface gets pinned. The depinning transition
can be characterized by a set of critical exponents: the static and dynamical
roughness exponen... | 1993-02-26 | 2009-10-22 | [
"cond-mat"
] | Heiko Leschhorn |
cond-mat/9302038 | Multi-Channel Kondo Necklace | A multi--channel generalization of Doniach's Kondo necklace model is
formulated, and its phase diagram studied in the mean--field approximation. Our
intention is to introduce the possible simplest model which displays some of
the features expected from the overscreened Kondo lattice. The $N$ conduction
electron channel... | 1993-02-26 | 2013-07-22 | [
"cond-mat"
] | P. Fazekas and Hae-Young Kee (International Centre for Theoretical
Physics, Trieste, Italy) |
cond-mat/9302037 | Universal Conductivity in the Two dimensional Boson Hubbard Model | We use Quantum Monte Carlo to evaluate the conductivity $\sigma$ of the
2--dimensional disordered boson Hubbard model at the superfluid-bose glass
phase boundary. At the critical point for particle density $\rho=0.5$, we find
$\sigma_{c}=(0.45 \pm 0.07) \sigma_{Q}$, where $\sigma_{Q}= e_{*}^{2} / h$ from
a finite size ... | 1993-02-25 | 2009-10-22 | [
"cond-mat"
] | G.G. Batrouni, B. Larson, R.T. Scalettar, J. Tobochnik, J. Wang |
cond-mat/9302035 | Interference of two electrons entering a superconductor | The subgap conductivity of a normal-superconductor (NS) tunnel junction is
thought to be due to tunneling of two electrons. There is a strong interference
between these two electrons, originating from the spatial phase coherence in
the normal metal at a mesoscopic length scale and the intrinsic coherence of
the superco... | 1993-02-23 | 2009-10-22 | [
"cond-mat"
] | F. W. J. Hekking and Yu.V. Nazarov |
cond-mat/9302036 | Non-Analytic Contributions to the Self-Energy and the Thermodynamics of
Two-Dimensional Fermi Liquids | We calculate the entropy of a two-dimensional Fermi Liquid(FL) using a model
with a contact interaction between fermions. We find that there are $T^2$
contributions to the entropy from interactions separate from those due to the
collective modes. These $T^2$ contributions arise from non-analytic corrections
to the real... | 1993-02-23 | 2009-10-22 | [
"cond-mat"
] | D. Coffey and K. S. Bedell (Los Alamos National Laboratory, Los
Alamos, NM) |
cond-mat/9302034 | Subgap Conductivity of a Superconducting-Normal Tunnel Interface | At low temperatures, the transport through a superconducting-normal tunnel
interface is due to tunneling of electrons in pairs. The probability for this
process is shown to depend on the layout of the electrodes near the tunnel
junction, rather than on properties of the tunnel barrier. This dependence is
due to interfe... | 1993-02-23 | 2009-10-22 | [
"cond-mat"
] | F.W.J. Hekking and Yu.V. Nazarov |
cond-mat/9302033 | Irreversible Multilayer Adsorption | Random sequential adsorption (RSA) models have been studied due to their
relevance to deposition processes on surfaces. The depositing particles are
represented by hard-core extended objects; they are not allowed to overlap.
Numerical Monte Carlo studies and analytical considerations are reported for 1D
and 2D models o... | 1993-02-20 | 2016-07-12 | [
"cond-mat"
] | P. Nielaba, V. Privman, J.-S. Wang |
cond-mat/9302030 | Universal persistent currents in mesoscopic metal rings due to
long-range Coulomb interactions | We calculate the average persistent current in a mesoscopic metal ring
threaded by a magnetic flux in the diffusive regime. It is shown that the
classical electromagnetic energy leads to a {\it{universal}} average current of
the order of $ \alpha e c / C_{0}$, where $\alpha$ is the fine structure
constant, $-e$ is the ... | 1993-02-19 | 2009-01-23 | [
"cond-mat"
] | Peter Kopietz |
cond-mat/9302031 | Nonuniversal spectral properties of the Luttinger model | The one electron spectral functions for the Luttinger model are discussed for
large but finite systems. The methods presented allow a simple interpretation
of the results. For finite range interactions interesting nonunivesal spectral
features emerge for momenta which differ from the Fermi points by the order of
the in... | 1993-02-19 | 2009-10-22 | [
"cond-mat"
] | K. Sch\"onhammer and V. Meden |
cond-mat/9302032 | Many Particle Hamiltonian for the Fractional Quantum Hall Effect | A many-particle Hamiltonian is proposed in order to explain the fractional
quantum Hall effect (FQHE) for fractional filling factors $\nu < 1$. The
solutions of the corresponding Hartree-Fock equations make it possible to
discuss the FQHE from the point of view of the single quasi-particle energy
spectrum. It is shown ... | 1993-02-19 | 2007-05-23 | [
"cond-mat"
] | Myung-Hoon Chung |
cond-mat/9302029 | Long-Range Energy-Level Interaction in Small Metallic Particles | We consider the energy level statistics of non-interacting electrons which
diffuse in a $ d $-dimensional disordered metallic conductor of characteristic
Thouless energy $ E_c. $ We assume that the level distribution can be written
as the Gibbs distribution of a classical one-dimensional gas of fictitious
particles wit... | 1993-02-19 | 2017-12-07 | [
"cond-mat"
] | R.A. Jalabert, J.-L. Pichard, C.W.J. Beenakker |
cond-mat/9302028 | Fluctuations and Pattern Selection Near an Eckhaus Instability | We study the effect of fluctuations in the vicinity of an Eckhaus
instability. The classical stability limit, which is defined in the absence of
fluctuations, is smeared out into a region in which fluctuations and
nonlinearities dominate the decay of unstable states. The width of this region
is shown to grow as $ D^{1/... | 1993-02-19 | 2009-09-25 | [
"cond-mat",
"nlin.PS",
"patt-sol"
] | E. Hernandez-Garcia, Jorge Vinals, Raul Toral, and M. San Miguel |
cond-mat/9302023 | On the random filling of $R^d$ by non-\-overlapping d-dimensional cubes | We compute the time-dependent coverage in the random sequential adsorption of
aligned d-dimensional cubes in $R^d$ using time-series expansions. The
seventh-order series in 2, 3 and 4 dimensions is resummed in order to predict
the coverage at jamming. The result is in agreement with Monte-Carlo
simulations. A simple ar... | 1993-02-18 | 2009-10-22 | [
"cond-mat"
] | B. Bonnier, M. Hontebeyrie, and C. Meyers |
cond-mat/9302026 | The supergroup U(M/N) with regard to electronic Hamiltonians | We study the U(M/N) supergroup keeping in mind its connection with electronic
Hamiltonians. It is explicitly shown that the generators of the supergroup
U(N/N) can be expressed by Clifford operators or Fermi operators. A multi-band
supersymmetric electronic model is suggested. | 1993-02-18 | 2009-10-22 | [
"cond-mat"
] | Ko Okumura |
cond-mat/9302025 | The Semiclassical Expansion of the t-J model | The Semiclassical Expansion of the t-J model. Lectures in the Jerusalem
Winter School on Strongly Correlated Electrons, Dec. 1991, by Assa Auerbach,
Physics Dept., Technion, Israel. LateX. Tech-102. | 1993-02-18 | 2007-05-23 | [
"cond-mat"
] | Assa Auerbach (Physics Dept., Technion, Israel) |
cond-mat/9302024 | The 1/N Expansion and Long Range Antiferromagnetic Order | The staggered magnetization of the Heisenberg antiferromagnet in two
dimensions can be systematically approximated by a 1/N expansion. Cancellation
between self energy diagrams leads to a Luttinger-like theorem for the ground
state. We prove (for a smooth enough self energy) that the long range order of
mean field theo... | 1993-02-18 | 2009-10-22 | [
"cond-mat"
] | Maxim Raykin (Boston University) and Assa Auerbach (Technion, Israel) |
cond-mat/9302027 | Even and odd-frequency pairing correlations in 1-D t-J-h model: a
comparative study | An equal time version of odd-frequency pairing for a generalized $t-J$ model
is introduced. It is shown that the composite operators describing binding of
Cooper pairs with magnetization fluctuations naturally appear in this approach.
The pairing correlations in both BCS and odd-frequency channels are
investigated exac... | 1993-02-18 | 2009-10-22 | [
"cond-mat"
] | A. V. Balatsky and J. Bonca |
cond-mat/9302022 | Various condensed matter Hamiltonians in terms of U(2/2) operators and
their symmetry structures | We rewrite various lattice Hamiltonian in condensed matter physics in terms
of U(2/2) operators that we introduce. In this representation the symmetry
structure of the models becomes clear. Especially, the Heisenberg, the
supersymmetric t-J and a newly proposed high-$T_c$ superconducting Hamiltonian
reduce to the same ... | 1993-02-17 | 2009-10-22 | [
"cond-mat"
] | Ko Okumura |
cond-mat/9302020 | Effect of three-particle correlations in low dimensional Hubbard models | A simple approximation which captures some non-perturbative aspects of the
one electron Green function of strongly interacting Fermion systems is
developed. It provides a way to go one step beyond the usual dilute limit since
particle-particle as well as particle-hole scattering are treated on the same
footing. Interme... | 1993-02-16 | 2016-08-31 | [
"cond-mat"
] | Ted Hsu and Benoit Doucot |
cond-mat/9302021 | New model for crack growth using random walkers | In close analogy to diffusion limited aggregation (DLA) and inspired by a
work of Roux, a random walker algorithm is constructed to solve the problem of
crack growth in an elastic medium. In contrast to conventional lattice
approaches, the stress field is not calculated throughout the whole medium, but
random walkers a... | 1993-02-16 | 2007-05-23 | [
"cond-mat"
] | Peter Ossadnik |
cond-mat/9302019 | Critical Behavior of the Antiferromagnetic Heisenberg Model on a Stacked
Triangular Lattice | We estimate, using a large-scale Monte Carlo simulation, the critical
exponents of the antiferromagnetic Heisenberg model on a stacked triangular
lattice. We obtain the following estimates: $\gamma/\nu= 2.011 \pm .014 $,
$\nu= .585 \pm .009 $. These results contradict a perturbative $2+\epsilon$
Renormalization Group c... | 1993-02-15 | 2008-02-03 | [
"cond-mat"
] | T. Bhattacharya, A. Billoire, R. Lacaze, and Th. Jolic{\oe}ur |
cond-mat/9511107 | Structure of binary clusters: are icosahedra relevant ? | We investigate the structure of 13-particle clusters in binary alloys for
various size ratios and different concentrations via MD simulation. Our goal is
to predict which systems are likely to form local icosahedral structures when
rapidly supercooled from the melt. We calculate the energy spectrum of the
minimal energ... | 1993-02-13 | 2007-05-23 | [
"cond-mat"
] | Stefano Cozzini and Marco Ronchetti (University of Trento) |
cond-mat/9302017 | Exact calculation of spectral properties of a particle interacting with
a one dimensional fermionic system | Using the Bethe ansatz analysis as was reformulated by Edwards, we calculate
the spectral properties of a particle interacting with a bath of fermions in
one dimension for the case of equal particle-fermion masses. These are directly
related to singularities apparent in optical experiments in one dimensional
systems. T... | 1993-02-12 | 2009-10-22 | [
"cond-mat"
] | H. Castella, X. Zotos |
cond-mat/9302016 | SU(N) Antiferromagnets and Strongly Coupled QED: Effective Field Theory
for Josephson Junctions Arrays | We review our analysis of the strong coupling of compact QED on a lattice
with staggered Fermions. We show that, for infinite coupling, compact QED is
exactly mapped in a quantum antiferromagnet. We discuss some aspects of this
correspondence relevant for effective field theories of Josephson junctions
arrays. | 1993-02-12 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | M.C.Diamantini E.Langmann G.W.Semenoff P.Sodano |
cond-mat/9302018 | Possible Realization of Odd Frequency Pairing in Heavy Fermion Compounds | Using Majorana Fermions to represent spins we re-examine the Kondo Lattice
model for heavy fermions. The simplest decoupling procedure provides a
realization of odd frequency superconductivity, with resonant pairing and
surfaces of gap zeros. Spin and charge coherence factors vanish linearly with
the energy on the Ferm... | 1993-02-12 | 2009-10-22 | [
"cond-mat"
] | P. Coleman, E. Miranda and A. Tsvelik |
cond-mat/9302015 | Molecular-orbital theory for the stopping power of atoms in the low
velocity regime:the case of helium in alkali metals | A free-parameter linear-combination-of-atomic-orbitals approach is presented
for analyzing the stopping power of slow ions moving in a metal. The method is
applied to the case of He moving in alkali metals. Mean stopping powers for He
present a good agreement with local-density-approximation calculations. Our
results s... | 1993-02-11 | 2009-10-22 | [
"cond-mat"
] | Jose J. Dorado and F. Flores |
cond-mat/9302013 | Theory of Nuclear Spin-Lattice Relaxation in La$_2$CuO$_4$ at High
Temperatures | The problem of the nuclear spin-lattice relaxation in La$_2$CuO$_4$ is
revisited in connection with the recent measurements of the NQR relaxation rate
for temperatures up to $ 900\mbox{K} $ [T.\ Imai {\em et al.}, Phys.\ Rev.\
Lett., in press]. We use an approach based on the exact diagonalization for the
Heisenberg mo... | 1993-02-09 | 2009-10-22 | [
"cond-mat"
] | A. Sokol, E. Gagliano, and S. Bacci |
cond-mat/9302014 | Kinetics of Ordering in Cu3Au: An Atomistic Approach | We study the kinetics of ordering in Cu3Au using a model Hamiltonian derived
from the effective medium theory of chemical bonding. Monte Carlo simulations
are used to investigate universal and non-universal features of the growth
kinetics. Anisotropic scaling of the structure factor is observed in late-stage
growth of ... | 1993-02-09 | 2007-05-23 | [
"cond-mat"
] | Zhigang Xi and Bulbul Chakraborty |
cond-mat/9302012 | Enhancement of the decay rate of nonequilibrium carrier distributions
due to scattering-in processes | We show that, for some semiconductor devices and physical experiments,
processes which scatter electrons {\em into} a state $|{\bf k}\rangle$ can
contribute strongly to the decay of a nonequilibrium electron occupation of
$|{\bf k}\rangle$. For electrons, the decay rate $\gamma({\bf k})$ is given by
the sum of the tota... | 1993-02-08 | 2009-10-22 | [
"cond-mat"
] | B.A. Sanborn, Ben Yu-Kuang Hu, S. Das Sarma |
cond-mat/9302011 | Hole-hole correlations in the $U=\infty $ limit of the Hubbard model and
the stability of the Nagaoka state | We use exact diagonalisation in order to study the infinite - $U$ limit of
the two dimensional Hubbard model. As well as looking at single-particle
correlations, such as $n_{{\bf k}\sigma }=\langle c^\dagger _{{\bf k}\sigma
}c_{{\bf k}\sigma } \rangle $, we also study {\it N-particle correlation
functions} which compar... | 1993-02-06 | 2009-10-22 | [
"cond-mat"
] | M. Long and X. Zotos |
cond-mat/9302010 | Phase diagram of the one-dimensional extended Hubbard model at quarter
filling | We used exact diagonalization of small clusters and exact results in various
limits to determine the phase diagram and the critical exponents of the one
dimensional (1D) $U-V$ model at quarter-filling. We found an instability of the
Luttinger liquid to a charge-density wave (CDW) insulator across a boundary
going from ... | 1993-02-06 | 2009-10-22 | [
"cond-mat"
] | Frederic Mila and Xenophon Zotos |
cond-mat/9302009 | Non-equilibrium relaxation and interface energy of the Ising model | {}From the non-equilibrium critical relaxation study of the two-dimensional
Ising model, the dynamical critical exponent $z$ is estimated to be $2.165 \pm
0.010$ for this model. The relaxation in the ordered phase of this model is
consistent with $\exp (-\sqrt{t/\tau })$ behavior. The interface energy of the
three-dime... | 1993-02-05 | 2009-10-22 | [
"cond-mat"
] | Nobuyasu Ito |
cond-mat/9302008 | Mesoscopic transport beyond linear response | We present an approach to steady-state mesoscopic transport based on the
maximum entropy principle formulation of nonequilibrium statistical mechanics.
Our approach is not limited to the linear response regime. We show that this
approach yields the quantization observed in the integer quantum Hall effect at
large curre... | 1993-02-04 | 2009-10-22 | [
"cond-mat"
] | O. Heinonen and M.D. Johnson |
cond-mat/9302007 | The Constraint for the Lowest Landau Level and the Chern-Simons Field
Theory Approach for the Fractional Quantum Hall Effect: Infinite and Finite
Systems | We build the constraint that all electrons are in the lowest Landau level
into the Chern-Simons field theory approach for the fractional quantum Hall
system. We show that the constraint can be transmitted from one hierarchical
state to the next. As a result, we derive in generic the equations of the
fractionally charge... | 1993-02-04 | 2009-10-22 | [
"cond-mat"
] | Zhong-Shui Ma, Zhao-Bin Su (Institute of Theoretical Physics, Academia
Sinica Beijing 100080, China Zhejiang Institute of Modern Physics,Zhejiang
University) |
cond-mat/9302006 | Interacting fermions in one dimension: from weak to strong correlation | Lecture notes from the Jerusalem Winter School on Theoretical Physics
"Correlated Electron Systems", Dec. 1991 -- Jan. 1992. Contains a review of
recent and not so recent results in the theory of correlated fermions in one
dimension. | 1993-02-03 | 2007-05-23 | [
"cond-mat"
] | H.J. Schulz |
cond-mat/9302004 | Excitation Spectrum of a Double Quantum Well System | The collective charge-excitation spectrum of a double quantum well system in
a strong magnetic field is obtained within the random phase approximation.
Correction to the spectrum coming from the finiteness of the magnetic field is
calculated up to the first order in inverse of the magnetic field. Dependencies
on the ma... | 1993-02-02 | 2009-10-22 | [
"cond-mat"
] | Osamu Narikiyo and Daijiro Yoshioka |
cond-mat/9302003 | Theory of p-wave Pairing for $^3$He on Grafoil | The specific heat and susceptibility data for $^3$He on Grafoil are analyzed
in the framework of the Landau Fermi liquid theory. The dominant interaction
between $^3$He quasiparticles is found to be in the p-wave channel for most
experimentally accessible areal densities of $^{3}$He. This interaction is
attractive and ... | 1993-02-02 | 2008-12-18 | [
"cond-mat"
] | A.V. Chubukov and A. Sokol |
cond-mat/9302005 | Density Patterns in Granular Media | Recent experiments by Baxter et al. showed the existence of density waves in
granular material flowing out of a hopper. We show, using Molecular Dynamics
Simulations, that this effect is a consequence of static friction and find that
these density fluctuations follow a $1/f$ spectrum. The effect is enhanced when
the op... | 1993-02-02 | 2007-05-23 | [
"cond-mat"
] | G. Ristow and H.J. Herrmann (HLRZ, Juelich) |
cond-mat/9302002 | Neutral and Charged Anyon Fluids | (Review) Properties of neutral and charged anyon fluids are examined, with
the main focus on the question whether or not a charged anyon fluid exhibits a
superconductivity at zero and finite temperature. Quantum mechanics of anyon
fluids is precisely described by Chern-Simons gauge theory. The random phase
approximatio... | 1993-02-01 | 2015-06-25 | [
"cond-mat",
"hep-th"
] | Yutaka Hosotani |
cond-mat/9302001 | Comment on the Coupling of Zero Sound to the $J=1^-$ Modes of $^3$He-B | Features in the zero sound attenuation near the pair-breaking edge in
superfluid $^3$He-B have been observed in large magnetic fields. Schopohl and
Tewordt [{\sl J. Low Temp. Phys.} {\bf 57}, 601 (1984)] claim that the $J=1^-,
M=\pm 1$ order-parameter collective modes couple to zero sound as a result of
the distortion ... | 1993-02-01 | 2009-10-22 | [
"cond-mat"
] | Ross H. McKenzie and J. A. Sauls |
cond-mat/9301038 | Scaling of Island Growth in Pb Overlayers on Cu(001) | The growth and ordering of a Pb layer deposited on Cu(001) at 150 K has been
studied using atom beam scattering. At low coverage, ordered Pb islands with a
large square unit cell and nearly hexagonal internal structure are formed. This
is a high order commensurate phase with 30 atoms in the unit cell. From the
measurem... | 1993-01-28 | 2009-10-22 | [
"cond-mat"
] | Wei Li, Gianfranco Vidali and Ofer Biham |
cond-mat/9301039 | Many-body exchange-correlation effects in the lowest subband of
semiconductor quantum wires | We consider theoretically the electron--electron interaction induced
exchange-correlation effects in the lowest subband of a quasi-one-dimensional
GaAs quantum wire structures. We calculate, within the leading order dynamical
screening approximation ({\em i.e.} the so-called $GW$ approximation of the
electron gas theor... | 1993-01-28 | 2007-05-23 | [
"cond-mat"
] | Ben Yu-Kuang Hu and S. Das Sarma |
cond-mat/9301037 | Mott Transition in An Anyon Gas | We introduce and analyze a lattice model of anyons in a periodic potential
and an external magnetic field which exhibits a transition from a Mott
insulator to a quantum Hall fluid. The transition is characterized by the anyon
statistics, $\alpha$, which can vary between Fermions, $\alpha=0$, and Bosons,
$\alpha=1$. For... | 1993-01-28 | 2008-11-26 | [
"cond-mat",
"hep-th"
] | Wei Chen (UBC), Matthew P.A. Fisher (IBM), and Yong-Shi Wu (Utah) |
cond-mat/9301036 | Scaling theory of the Mott-Hubbard metal-insulator transition in one
dimension | We use the Bethe ansatz equations to calculate the charge stiffness $D_{\rm
c} = (L/2) d^2 E_0/d\Phi_{\rm c}^2|_{\Phi_{\rm c}=0}$ of the one-dimensional
repulsive-interaction Hubbard model for electron densities close to the Mott
insulating value of one electron per site ($n=1$), where $E_0$ is the ground
state energy,... | 1993-01-27 | 2007-05-23 | [
"cond-mat"
] | C. A. Stafford and A. J. Millis |
cond-mat/9301035 | The Haldane Energy Gap of A Doped Linear-Chain Heisenberg
Antiferromagnet | Using the valence-bond-solid (VBS) approach and the Schwinger boson mean
field approximation, we study the dependence of the Haldane gap of a spin-1
linear chain Heisenberg antiferromagnet on impurity doping with different
spins. The impurity spins affect the singlet pairing order parameter $\Delta $
and the constraint... | 1993-01-27 | 2016-08-31 | [
"cond-mat"
] | Zhong-Yi LU, Zhao-Bin, SU and Lu YU |
cond-mat/9301034 | Lower Bound on the Energy Gap at Precise Locations on the
Bi_2Sr_2CaCu_2O_8 Fermi Surface | Recent inelastic-neutron-scattering measurements of a low-energy phonon in
Bi_2Sr_2CaCu_2O_8 provide enough information to place a lower bound on the
energy gap magnitude at precise locations on the Fermi surface. Measurements of
a few low-energy phonons should indicate whether the gap symmetry is
d_{x^2-y^2}. Further ... | 1993-01-27 | 2007-05-23 | [
"cond-mat"
] | Michael E. Flatte |
cond-mat/9301032 | A Model for the Propagation of Sound in Granular Materials | This paper presents a simple ball-and-spring model for the propagation of
small amplitude vibrations in a granular material. In this model, the
positional disorder in the sample is ignored and the particles are placed on
the vertices of a square lattice. The inter-particle forces are modeled as
linear springs, with the... | 1993-01-26 | 2009-10-22 | [
"cond-mat"
] | Michael Leibig |
cond-mat/9301033 | Order of Two-Dimensional Isotropic Dipolar Antiferromagnets | The question of the existence of order in two-dimensional isotropic dipolar
Heisenberg antiferromagnets is studied. It is shown that the dipolar
interaction leads to a gap in the spin-wave energy and a nonvanishing order
parameter. The resulting finite N\'eel-temperature is calculated for a square
lattice by means of l... | 1993-01-26 | 2009-10-22 | [
"cond-mat"
] | C.Pich and F.Schwabl |
cond-mat/9301031 | Quantum Inverse Scattering Method and Correlation Functions | The book contain detailed explanation of Bethe Ansatz, Quantum Inverse
Scattering Method and Algebraic Bether Ansatz as well. Main Models are
Nonlinear Schrodinger equation (one dimensional Bose gas), Sine-Gordon and
Thiring models. Heisenberg Antiferromagnet and Hubbard models. It is explained
in detail, how to calcul... | 1993-01-25 | 2007-05-23 | [
"cond-mat"
] | V.E. Korepin, A.G.Izergin, N.M.Bogoliubov |
cond-mat/9301030 | Phase separation in the large-spin {\it t}-{\it J} model | We investigate the phase diagram of the two dimensional {\it t}-{\it J} model
using a recently developed technique that allows to solve the mean-field model
hamiltonian with a variational calculation. The accuracy of our estimate is
controlled by means of a small parameter $1/q$, analogous to the inverse spin
magnitude... | 1993-01-23 | 2009-10-22 | [
"cond-mat"
] | Antimo Angelucci and Sandro Sorella |
cond-mat/9301028 | Histogram Monte Carlo study of next-nearest-neighbor Ising
antiferromagnet on a stacked triangular lattice | Critical properties of the Ising model on a stacked triangular lattice, with
antiferromagnetic first and second-neighbor in-plane interactions, are studied
by extensive histogram Monte Carlo simulations. The results, in conjunction
with the recently determined phase diagram, strongly suggest that the
transition from th... | 1993-01-22 | 2009-10-22 | [
"cond-mat"
] | M.L. Plumer, A. Mailhot, R. Ducharme, A. Caill\'e, and H.T. Diep |
cond-mat/9301029 | Comment on "Critical properties of highly frustrated pyrochlore
antiferromagnets" | We argue that the analysis of Reimers {\it et al.} [ Phys. Rev. B {\bf 45},
7295 (1992)] of their Monte Carlo data on the Heisenberg pyrochlore
antiferromagnet, which suggests a new universality class, is not conclusive. By
re-analysis of their data, we demonstrate asymptotic volume dependence in some
thermodynamic qua... | 1993-01-22 | 2009-10-22 | [
"cond-mat"
] | A. Mailhot and M.L. Plumer |
cond-mat/9301026 | Time-Dependent Transport through a Mesoscopic Structure | We present a general formulation of the nonlinear, time-dependent current
through a small interacting region, where electron energies are changed by
time-dependent voltages. An exact solution is obtained for the non-interacting
case when the elastic coupling to the leads is independent of energy. Temporal
phase coheren... | 1993-01-21 | 2009-10-22 | [
"cond-mat"
] | Ned S. Wingreen, Antti-Pekka Jauho, and Yigal Meir |
cond-mat/9301027 | Universal Magnetic Properties of $La_{2-\delta} Sr_{\delta} Cu O_4$ at
Intermediate Temperatures | We present the theory of two-dimensional, clean quantum antiferromagnets with
a small, positive, zero temperature ($T$) stiffness $\rho_s$, but with the
ratio $k_B T / \rho_s $ arbitrary. Universal scaling forms for the uniform
susceptibility ($\chi_u$), correlation length($\xi$), and NMR relaxation rate
($1/T_1$) are ... | 1993-01-21 | 2009-01-23 | [
"cond-mat"
] | Andrey V. Chubukov and Subir Sachdev |
cond-mat/9301025 | Enhanced suppresion of localization in a continuous Random-Dimer Model | We consider a one-dimensional continuous (Kronig-Penney) extension of the
(tight-binding) Random Dimer model of Dunlap et al. [Phys. Rev. Lett. 65, 88
(1990)]. We predict that the continuous model has infinitely many resonances
(zeroes of the reflection coefficient) giving rise to extended states instead
of the one res... | 1993-01-21 | 2009-10-22 | [
"cond-mat"
] | A. Sanchez and F. Dominguez-Adame |
cond-mat/9301023 | Soluble `Supersymmetric' Quantum XY Model | We present a `supersymmetric' modification of the $d$-dimensional quantum
rotor model whose ground state is exactly soluble. The model undergoes a
vortex-binding transition from insulator to metal as the rotor coupling is
varied. The Hamiltonian contains three-site terms which are relevant: they
change the universality... | 1993-01-20 | 2009-10-22 | [
"cond-mat"
] | A. E. Rana and S. M. Girvin |
cond-mat/9301024 | Anyons as Dirac Strings the $A_x=0$ Gauge | We show how to quantize the anyon particle theory in the gauge $A_x=0$, where
the statistical potential $\vec A(\vec x)$ is a Dirac string. In this gauge,
anyons obey normal statistics. | 1993-01-20 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | John McCabe |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.