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/9403086 | Dynamic and Static Properties of the Randomly Pinned Planar Flux Array | We report the results of large scale numerical studies of the dynamic and
static properties of the random phase model of the randomly pinned flux lines
confined in a plane. From the onset of nonlinear IV characteristics, we
identify a vortex glass transition at the theoretically anticipated
temperature. However, the vo... | 1994-03-28 | 2009-10-22 | [
"cond-mat"
] | G. George Batrouni, Terence Hwa |
cond-mat/9403085 | A generalized ensemble of random matrices | A random matrix ensemble incorporating both GUE and Poisson level statistics
while respecting $U(N)$ invariance is proposed and shown to be equivalent to a
system of noninteracting, confined, one dimensional fermions at finite
temperature. | 1994-03-28 | 2009-10-22 | [
"cond-mat",
"hep-th",
"nlin.SI",
"solv-int"
] | Moshe Moshe, Herbert Neuberger, Boris Shapiro |
cond-mat/9403084 | Combustion of Fractal Distributions | The advantages of introducing a fractal viewpoint in the field of combustion
is emphasized. It is shown that the condition for perfect combustion of a
collection of drops is the self-similarity of the distribution. | 1994-03-25 | 2007-05-23 | [
"cond-mat"
] | Oscar Sotolongo and Enrique Lopez |
cond-mat/9403083 | Shake-up effects and intermolecular tunneling in C$_{60}$ ions | The multiplet structure induced by the Coulomb interactions in C$_{60}^{n-}$
($n = 1 - 12$) is analyzed. The partially ocuppied LUMO gives rise to a set of
levels which fill a relatively wide band ( $\approx 2-3$ eV ). A large ($\sim
1$ eV) intramolecular effective repulsion is found. The anions are also shown
to be hi... | 1994-03-24 | 2009-10-22 | [
"cond-mat"
] | F. Guinea, J. Gonzalez and M. A. H. Vozmediano |
cond-mat/9403082 | Loop algorithms for quantum simulations of fermion models on lattices | Two cluster algorithms, based on constructing and flipping loops, are
presented for worldline quantum Monte Carlo simulations of fermions and are
tested on the one-dimensional repulsive Hubbard model. We call these algorithms
the loop-flip and loop-exchange algorithms. For these two algorithms and the
standard worldlin... | 1994-03-23 | 2007-05-23 | [
"cond-mat"
] | N.Kawashima, J.E.Gubernatis and H.G.Evertz |
cond-mat/9403081 | 3^He A-B Transition in Finite Geometries | The measured rate of the 3^He A-B transition depends on the diameter of the
experimental cell. Theoretically, this can only be explained by a direct drag
on the interface exerted by the lateral walls, leading to a pressure
discontinuity across the interface. This has not been considered before, either
here or in simila... | 1994-03-23 | 2015-06-25 | [
"cond-mat"
] | Peter Kostaedt and Mario Liu |
cond-mat/9403080 | q-deformations of quantum spin chains with exact valence-bond ground
states | Quantum spin chains with exact valence-bond ground states are of great
interest in condensed-matter physics. A class of such models was proposed by
Affleck et al., each of which is su(2)-invariant and constructed as a sum of
projectors onto definite total spin states at neighbouring sites. We propose to
use the machine... | 1994-03-23 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | M.T. Batchelor and C.M. Yung |
cond-mat/9403076 | Bogoliubov Quasiparticle Excitations in the Two-Dimensional t-J Model | Using a proposed numerical technique for calculating anomalous Green's
functions characteristic of superconductivity, we show that the low-lying
excitations in a wide parameter and doping region of the two-dimensional
$t$$-$$J$ model are well described by the picture of dressed Bogoliubov
quasiparticles in the BCS pair... | 1994-03-22 | 2009-10-22 | [
"cond-mat"
] | Y. Ohta, T. Shimozato, R. Eder, and S. Maekawa (Dept. of Appl. Phys.,
Nagoya Univ., Nagoya 464-01, Japan) |
cond-mat/9403077 | Numerical study of the Ising spin glass in a magnetic field | We study the order parameter distribution P(q) in the 4d Ising spin glass
with $\pm J$ couplings in a magnetic field. We also compare these results with
simulations for the infinite ranged model (i.e. SK model.) Then we analyse our
numerical results in the framework of the droplet picture as well as in the
mean field a... | 1994-03-22 | 2009-10-22 | [
"cond-mat"
] | Marco Picco and Felix Ritort |
cond-mat/9403078 | A Toy Model of Interlayer Pair Hopping | We extend the correlated electron model of Baskaran [Mod. Phys. Lett. {\bf
B5}, 643(1991)] to the case of coupled layers. We show that the nature of the
non-Fermi liquid ground state leads to the absence of electron-like
quasiparticles at the Fermi surface, thereby suppressing coherent transport of
electrons between th... | 1994-03-22 | 2015-06-25 | [
"cond-mat"
] | V. N. Muthukumar and G. Baskaran |
cond-mat/9403079 | Cluster Approximation for the Contact Process | The one-dimensional contact process is analyzed by a cluster approximation.
In this approach, the hierarchy of rate equations for the densities of finite
length empty intervals are truncated under the assumption that adjacent
intervals are not correlated. This assumption yields a first order phase
transition from an ac... | 1994-03-22 | 2009-10-22 | [
"cond-mat"
] | E. Ben-Naim and P. L. Krapivsky |
cond-mat/9403074 | Haldane's Fractional Statistics and the Riemann-Roch Theorem | The new definition of fractional statistics given by Haldane can be
understood in some special cases in terms of the Riemann-Roch theorem. | 1994-03-21 | 2009-10-22 | [
"cond-mat"
] | Dingping Li and St\'ephane Ouvry (Dipartimento di Fisica, Universit\'a
di Trento) |
cond-mat/9403073 | Universal Quantum Signatures of Chaos in Ballistic Transport | The conductance of a ballistic quantum dot (having chaotic classical dynamics
and being coupled by ballistic point contacts to two electron reservoirs) is
computed on the single assumption that its scattering matrix is a member of
Dyson's circular ensemble. General formulas are obtained for the mean and
variance of tra... | 1994-03-21 | 2009-10-22 | [
"cond-mat"
] | R.A. Jalabert, J.-L. Pichard, and C.W.J. Beenakker |
cond-mat/9403075 | Effective Mass of One 4he Atom in Liquid 3he | A microscopic calculation of the effective mass of one $^4$He impurity in
homogeneous liquid $^3$He at zero temperature is performed for an extended
Jastrow--Slater wave function, including two-- and three--body dynamical
correlations and also backflow correlations between the $^4$He atom and the
particles in the mediu... | 1994-03-21 | 2009-10-22 | [
"cond-mat"
] | F. Arias de Saavedra, J. Boronat, A. Polls and A. Fabrocini |
cond-mat/9403072 | Quantized Density Response in Insulators | The response of particle density to a dilation of a periodic potential in an
insulator, with or without a fixed background potential or a magnetic field, is
shown to be quantized. A similar phenomenon occurs in a quantum Hall system,
where the derivative of the electron density with respect to the magnetic field
is qua... | 1994-03-18 | 2009-10-22 | [
"cond-mat"
] | Q.Niu |
cond-mat/9403071 | Vortex lattce melting in 2D superconductors and Josephson arrays | Monte Carlo simulations of 2D vortex lattice melting in a thin
superconducting film (or alternatively an array of Josephson junctions) are
performed in the London limit. Finite size scaling analyses are used to make a
detailed test of the dislocation mediated melting theory of KTNHY. We find that
the melting transition... | 1994-03-18 | 2009-10-22 | [
"cond-mat"
] | M. Franz, and S. Teitel (University of Rochester) |
cond-mat/9403069 | Can Density-matrix renormalization group be Applied to two dimensional
systems? | In order to extend the density-matrix renormalization-group (DMRG) method to
two-dimensional systems, we formulate two alternative methods to prepare the
initial states. We find that the number of states that is needed for accurate
energy calculations grows exponentially with the linear system size. We also
analyze how... | 1994-03-17 | 2007-05-23 | [
"cond-mat"
] | Shoudan Liang and Hanbin Pang |
cond-mat/9403068 | Coherent Transport Through a Quantum Trombone | We highlight a new "transverse" interference effect, arising from the
coupling between electrons and holes, induced by a superconducting island in
contact with a normal metal. As an example we compute the electrical
conductance G of a T-shaped mesoscopic sample, formed by joining a horizontal
bar of normal metal to a v... | 1994-03-17 | 2007-05-23 | [
"cond-mat"
] | N.K. Allsopp and C.J. Lambert |
cond-mat/9403067 | Simple model for the phase coexistence and electrical conductivity of
alkali fluids | We report the first theoretical model for the alkali fluids which yields a
liquid-vapor phase coexistence with the experimentally observed features and
electrical conductivity estimates which are also in accord with observations.
We have carried out a Monte Carlo simulation for a lattice gas model which
allows an integ... | 1994-03-17 | 2009-10-22 | [
"cond-mat"
] | P. Tarazona, E. Chacon, and J. P. Hernandez |
cond-mat/9403070 | Gap Renormalization in Dirty Anisotropic Superconductors: Implications
for the Order Parameter of the Cuprates | We contrast the effects of non-magnetic impurities on the properties of
superconductors having a \dw\ order parameter, and a highly anisotropic s-wave
(ASW) gap with the same nodal structure. The non-vanishing, impurity induced,
off-diagonal self-energy in the ASW state is shown to gap out the low energy
excitations pr... | 1994-03-17 | 2009-10-22 | [
"cond-mat"
] | R. Fehrenbacher and M.R. Norman |
cond-mat/9403066 | Correlation Function of the Spin-1/2 XXX Antiferromagnet | We consider a special correlation function in the isotropic spin-$\half$
Heisenberg antiferromagnet. It is the probability of finding a ferromagnetic
string of (adjacent) spins in the antiferromagnetic ground state. We give two
different representations for this correlation function. Both of them are exact
at any dista... | 1994-03-17 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Vladimir E. Korepin, Anatoli G. Izergin, Fabian H.L. Essler and Denis
B. Uglov |
cond-mat/9403062 | On the Origin of the -4.4 eV Band in CdTe(100)" | We calculate the bulk- (infinite system), (100)-bulk-projected- and
(100)-Surface-projected Green's functions using the Surface Green's Function
Matching method (SGFM) and an empirical tight-binding hamiltonian with
tight-binding parameters (TBP) that describe well the bulk band structure of
CdTe. In particular, we ana... | 1994-03-16 | 2009-10-22 | [
"cond-mat"
] | D. Olguin and R. Baquero |
cond-mat/9403061 | Correlation Induced Vanishing of the Gap Function on the Fermi Surface
in High $T_c$ Superconductors | We present physical arguments as well as numerical evidence to show that the
Cooper pair (gap) function vanishes on the Fermi surface in strongly correlated
electron systems such as \tJ and \lU Hubbard models in one and two dimensions.
Using exact diagonalization, we study a correlation function which is a measure
of t... | 1994-03-16 | 2007-05-23 | [
"cond-mat"
] | G. Baskaran, D. G. Kanhere, Mihir Arjunwadkar and Rahul Basu |
cond-mat/9403063 | Quantum Hall Ferromagnets | It is pointed out recently that the $\nu=1/m$ quantum Hall states in bilayer
systems behave like easy plane quantum ferromagnets. We study the
magnetotransport of these systems using their ``ferromagnetic" properties and a
novel spin-charge relation of their excitations. The general transport is a
combination of the us... | 1994-03-16 | 2009-10-22 | [
"cond-mat"
] | Tin-Lun Ho |
cond-mat/9403060 | Anomalous Behavior Of The Complex Conductivity Of Y_{1-x}Pr_xBa_2Cu_3O_7
Observed With THz Spectroscopy | We have measured the electrodynamic properties of Y_{1-x}Pr_xBa_2Cu_3O_7
single crystal thin films as a function of temperature using coherent
THz-time-domain spectroscopy. We obtain directly the complex conductivity
$\sigma=\sigma_1+i\sigma_2$, the London penetration depth $\lambda_L$, the
plasma frequency $\omega_p$,... | 1994-03-16 | 2009-10-22 | [
"cond-mat"
] | R. Buhleier, S.D. Brorson, I.E. Trofimov, J.O. White, H.-U.
Habermeier, and J. Kuhl (Max-Planck-Institut f\"ur Festk\"orperforschung,
Stuttgart, Germany) |
cond-mat/9403064 | Oscillatory Tunneling between Quantum Hall Systems | Electron tunneling between quantum Hall systems on the same two dimensional
plane separated by a narrow barrier is studied. We show that in the limit where
inelastic scattering time is much longer than the tunneling time, which can be
achieved in practice, electrons can tunnel back and forth through the barrier
contino... | 1994-03-16 | 2009-10-22 | [
"cond-mat"
] | Tin-Lun Ho |
cond-mat/9403059 | Asymptotically exact solution of a local copper-oxide model | We present an asymptotically exact solution of a local copper-oxide model
abstracted from the multi-band models. The phase diagram is obtained through
the renormalization-group analysis of the partition function. In the strong
coupling regime, we find an exactly solved line, which crosses the quantum
critical point of ... | 1994-03-16 | 2009-10-22 | [
"cond-mat"
] | Guang-Ming Zhang and Lu Yu |
cond-mat/9403058 | Magic Numbers of Silicon Clusters | A structural model for intermediate sized silicon clusters is proposed that
is able to generate unique structures without any dangling bonds. This
structural model consists of bulk-like core of five atoms surrounded by
fullerene-like surface. Reconstruction of the ideal fullerene geometry results
in the formation of cr... | 1994-03-16 | 2007-05-23 | [
"cond-mat"
] | Jun Pan and Mushti V. Ramakrishna |
cond-mat/9403054 | Aspect of Spin-Charge Separation due to Antiferromagentic Spin
Fluctuations in Technically Nested 2D Metals | It is shown that the charge susceptibility in nearly half-filled
two-dimensional (2D) metals, with technically nested Fermi surface, shows
anomaly at the wavevector different from that for the spin susceptibility at
low temperatures. Namely charge degrees of freedom behave there as if their
``Fermi surface" corresponde... | 1994-03-15 | 2007-05-23 | [
"cond-mat"
] | Kazumasa Miyake and Osamu Narikiyo |
cond-mat/9403055 | Scaling Theory of Conduction Through a Normal-Superconductor Microbridge | The length dependence is computed of the resistance of a disordered
normal-metal wire attached to a superconductor. The scaling of the transmission
eigenvalue distribution with length is obtained exactly in the metallic limit,
by a transformation onto the isobaric flow of a two-dimensional ideal fluid.
The resistance h... | 1994-03-15 | 2007-05-23 | [
"cond-mat"
] | C.W.J. Beenakker, B. Rejaei, and J.A. Melsen (Instituut-Lorentz,
Leiden, The Netherlands) |
cond-mat/9403057 | Excitation Spectrum of Composite Fermions | We show that the excitation spectrum of interacting electrons at filling
factor $\nu=\nu^*/(2\nu^*+1)$ is well described in terms of non-interacting
composite fermions at filling factor $\nu^*$, but does not have a one-to-one
correspondence with the excitation spectrum of non-interacting electrons at
$\nu^*$. In partic... | 1994-03-15 | 2007-05-23 | [
"cond-mat"
] | X.G. Wu and J.K. Jain |
cond-mat/9403056 | Mesoscopic Transport Through Ballistic Cavities: A Random S-Matrix
Theory Approach | We deduce the effects of quantum interference on the conductance of chaotic
cavities by using a statistical ansatz for the S matrix. Assuming that the
circular ensembles describe the S matrix of a chaotic cavity, we find that the
conductance fluctuation and weak-localization magnitudes are universal: they
are independe... | 1994-03-15 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Harold U. Baranger and Pier A. Mello |
cond-mat/9403049 | Magnetic Field Effect on an Electron Tunneling out of a Confining Plane | The influence of a magnetic field on the tunneling of an electron out of a
confining plane is studied by a path integral method. We map this 3-d problem
on to a 1-d one, and find that the tunneling is strongly affected by the field.
Without a perpendicular field the tunneling at zero temperature can be
completely suppr... | 1994-03-14 | 2009-10-22 | [
"cond-mat"
] | Ping Ao |
cond-mat/9403052 | Slow Relaxation and Phase Space Properties of a Conservative System with
Many Degrees of Freedom | We study the one-dimensional discrete $\Phi^4$ model. We compare two
equilibrium properties by use of molecular dynamics simulations: the Lyapunov
spectrum and the time dependence of local correlation functions. Both
properties imply the existence of a dynamical crossover of the system at the
same temperature. This cor... | 1994-03-14 | 2009-10-22 | [
"cond-mat"
] | S.Flach and G. Mutschke |
cond-mat/9403051 | Chaos and Quantum Thermalization | We show that a bounded, isolated quantum system of many particles in a
specific initial state will approach thermal equilibrium if the energy
eigenfunctions which are superposed to form that state obey {\it Berry's
conjecture}. Berry's conjecture is expected to hold only if the corresponding
classical system is chaotic... | 1994-03-14 | 2009-10-22 | [
"cond-mat",
"astro-ph",
"chao-dyn",
"gr-qc",
"hep-ph",
"hep-th",
"nlin.CD"
] | Mark Srednicki |
cond-mat/9403050 | Doubled Shot Noise In Disordered Normal-Metal-Superconductor Junctions | The low-frequency shot-noise power of a normal-metal-superconductor junction
is studied for arbitrary normal region. Through a scattering approach, a
formula is derived which expresses the shot-noise power in terms of the
transmission eigenvalues of the normal region. The noise power divided by the
current is enhanced ... | 1994-03-14 | 2007-05-23 | [
"cond-mat"
] | M. J. M. de Jong and C. W. J. Beenakker |
cond-mat/9403053 | Movability of Localized Excitations in Nonlinear Discrete Systems - a
Separatrix Problem | We analyze the effect of internal degrees of freedom on the movability
properties of localized excitations on defect-free nonlinear Hamiltonian
lattices by means of properties of a local phase space which is at least of
dimension six. We formulate generic properties of a movability separatrix in
this local phase space.... | 1994-03-14 | 2009-10-22 | [
"cond-mat"
] | S. Flach and C. R. Willis |
cond-mat/9403048 | Simulation of the electron-phonon interaction in infinite dimensions | The electron-phonon interaction corresponding to the Holstein model (with
Coulomb repulsion) is simulated in infinite dimensions using a novel quantum
Monte Carlo algorithm. The thermodynamic phase diagram includes commensurate
charge-density-wave phases, incommensurate charge-density-wave phases, and
superconductivity... | 1994-03-14 | 2007-05-23 | [
"cond-mat"
] | J. K. Freericks (University of California, Davis) and Mark Jarrell
(University of Cincinnati) |
cond-mat/9403045 | The hole-hole superconducting pairing in t-J model induced by the
long-range spin-wave exchange | Long-range $(r \sim p_F^{-1} \gg lattice \ spacing)$ spin-wave exchange
produces a very strong pairing of the holes. The different symmetry solutions
of BCS-type equation for the superconducting gap $\Delta$ are found. The most
strong pairing corresponds to $d$-wave symmetry. The physical reasons for the
strong pairing... | 1994-03-11 | 2009-10-22 | [
"cond-mat"
] | V.V.Flambaum, M.Yu.Kuchiev, and O.P.Sushkov |
cond-mat/9403046 | Propagation of a hole on a Neel background | We analyze the motion of a single hole on a N\'eel background, neglecting
spin fluctuations. Brinkman and Rice studied this problem on a cubic lattice,
introducing the retraceable-path approximation for the hole Green's function,
exact in a one-dimensional lattice. Metzner et al. showed that the
approximationalso becom... | 1994-03-11 | 2009-10-22 | [
"cond-mat"
] | E.Mueller-Hartmann and C.I.Ventura |
cond-mat/9403044 | Large size two-hole bound states in t-J model | Several series of shallow large-size ($l \gg lattice~ spacing$) two-hole
bound states are found in the two-dimensional t-J model. Their binding energies
depend exponentially on the inverse value of the hole-spin-wave coupling
constant. Their parity is connected with the angular wave function in a
nonstandard way. The p... | 1994-03-11 | 2009-10-22 | [
"cond-mat"
] | M. Yu. Kuchiev and O. P. Sushkov |
cond-mat/9403047 | Effective Masses of Ions in Superfluid $^3$He-B | We show that ion masses in superfluid $^3$He ought to be enormously enhanced
(by a factor of 100) as compared with the same ion masses in $^4$He measured at
low temperature. We calculate precisely the dependence of the effective mass on
pressure in $^3$He-B, and show that the coherent (ballistic) motion of ions in
$^3$... | 1994-03-11 | 2009-10-22 | [
"cond-mat"
] | N.Prokof'ev |
cond-mat/9403043 | The mobility and diffusion of a particle coupled to a Luttinger liquid | We study the mobility of a particle coupled to a one dimensional interacting
fermionic system, a Luttinger liquid. We bosonize the Luttinger liquid and find
the effective interaction between the particle and the bosonic system. We show
that the dynamics of this system is completely equivalent to the acoustic
polaron pr... | 1994-03-11 | 2009-10-22 | [
"cond-mat"
] | A.H.Castro Neto and A.O.Caldeira |
cond-mat/9403038 | Fluctuation-Induced First Order Transition between the Quantum Hall
Liquid and Insulator | We study the phase transition between the quantum Hall liquid state and the
insulating state within the framework of the Chern-Simons-Landau-Ginzburg
theory of the quantum Hall effect. For the transition induced by a background
periodic potential in the absence of disorder, the model is described by a
relativistic scal... | 1994-03-10 | 2009-10-22 | [
"cond-mat"
] | Leonid Pryadko and Shou-Cheng Zhang |
cond-mat/9403039 | Microscopic Calculations of the Finite-Size Spectrum in the Kondo
Problem | The finite-size spectrum in the Kondo problem is obtained from the
Bethe-ansatz solution of the exactly solved models. We investigate the Anderson
model, the highly correlated SU($\nu$) Anderson model and the {\it s-d}
exchange model. For all these models we find that the spectra exhibit the
properties characteristic o... | 1994-03-10 | 2016-08-31 | [
"cond-mat"
] | S. Fujimoto, N. Kawakami, and S.-K. Yang |
cond-mat/9403041 | Diffusion-Limited Aggregation Processes with 3-Particle Elementary
Reactions | A diffusion-limited aggregation process, in which clusters coalesce by means
of 3-particle reaction, A+A+A->A, is investigated. In one dimension we give a
heuristic argument that predicts logarithmic corrections to the mean-field
asymptotic behavior for the concentration of clusters of mass $m$ at time $t$,
$c(m,t)~m^{... | 1994-03-10 | 2009-10-22 | [
"cond-mat"
] | P. L. Krapivsky |
cond-mat/9403042 | Resonating Valence Bond Theory of Coupled Heisenberg Chains | Using numerical results from a density matrix renormalization group study as
a guide, we develop a resonating valence bond (RVB) theory for coupled
Heisenberg chains. We argue that simple topological effects mandate a
short-range RVB description of systems with an even number of chains $n_c$,
with a spin gap, short-ran... | 1994-03-10 | 2009-10-22 | [
"cond-mat"
] | S.R. White, R.M. Noack, and D.J. Scalapino |
cond-mat/9403040 | Weak-ergodicity breaking in mean-field spin-glass models | We review the long-time off-equilibrium dynamical behaviour of two
representative mean-field spin-glass models, namely the $p$-spin spherical and
the Sherrington-Kirkpatrick models. We show how both models capture aging
phenomena but with rather different characteristics. We discuss a scenario that
allows for interpret... | 1994-03-10 | 2015-06-25 | [
"cond-mat"
] | L. F. Cugliandolo and J. Kurchan |
cond-mat/9403035 | Phase transitions in the one-dimensional frustrated quantum XY model and
Josephson-junction ladders | A one-dimensional quantum version of the frustrated XY (planar rotor) model
is considered which can be physically realized as a ladder of
Josephson-junctions at half a flux quantum per plaquette. This system undergoes
a superconductor to insulator transition at zero temperature as a function of
charging energy. The cri... | 1994-03-09 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | E. Granato |
cond-mat/9403032 | Non local screening in a vortex line liquid | We show that the recent experiments \cite{safar} reporting the onset of the
non-local conductivity in the vortex state of $YBaCuO$ single crystals indicate
the presence of a new liquid phase of vortices. This phase is intermediate
between the normal metal and the Abrikosov lattice. We use the mapping of the
vortex prob... | 1994-03-09 | 2008-02-03 | [
"cond-mat"
] | M. V. Feigelman and L. B. Ioffe |
cond-mat/9403033 | Exactly Solvable Scaling Theory of Conduction in Disordered Wires | Recent developments are reviewed in the scaling theory of phase-coherent
conduction through a disordered wire. The Dorokhov-Mello-Pereyra-Kumar equation
for the distribution of transmission eigenvalues has been solved exactly, in
the absence of time-reversal symmetry. Comparison with the previous prediction
of random-m... | 1994-03-09 | 2013-04-08 | [
"cond-mat"
] | C.W.J. Beenakker (Instituut-Lorentz, Leiden, The Netherlands) |
cond-mat/9403034 | Conductance Fluctuations, Weak Localization, and Shot Noise for a
Ballistic Constriction in a Disordered Wire | This is a study of phase-coherent conduction through a ballistic point
contact with disordered leads. The disorder imposes mesoscopic
(sample-to-sample) fluctuations and weak-localization corrections on the
conductance, and also leads to time-dependent fluctuations (shot noise) of the
current. These effects are compute... | 1994-03-09 | 2007-05-23 | [
"cond-mat"
] | C.W.J. Beenakker and J.A. Melsen (Instituut-Lorentz, Leiden, The
Netherlands) |
cond-mat/9403037 | Is there spin-charge separation in the 2D Hubbard and t-J models at low
electronic densities? | The spin and density correlation functions of the two-dimensional Hubbard
model at low electronic density $<n>$ are calculated in the ground state by
using the power method, and at finite temperatures by using the quantum Monte
Carlo technique. Both approaches produce similar results, which are in close
agreement with ... | 1994-03-09 | 2009-10-22 | [
"cond-mat"
] | Y. C. Chen, A. Moreo, F. Ortolani, E. Dagotto and T. K. Lee |
cond-mat/9403036 | Dynamic Renormalization Group Approach to Self-Organized Critical
Phenomena | Two different models exhibiting self-organized criticality are analyzed by
means of the dynamic renormalization group. Although the two models differ by
their behavior under a parity transformation of the order parameter, it is
shown that they both belong to the same universality class, in agreement with
computer simul... | 1994-03-09 | 2009-10-22 | [
"cond-mat"
] | Albert Diaz-Guilera (Dep. Fisica Fonamental, Universitat de Barcelona) |
cond-mat/9403027 | Probing Gauge String Formation in a Superconducting Phase Transition | Superconductors are the only experimentally accessible systems with
spontaneously broken gauge symmetries which support topologically nontrivial
defects, namely string defects. We propose two experiments whose aim is the
observation of the dense network of these strings thought to arise, via the
Kibble mechanism, in th... | 1994-03-08 | 2009-10-22 | [
"cond-mat",
"hep-ph"
] | Serge Rudaz, Ajit M. Srivastava, and Shikha Varma |
cond-mat/9403029 | Correlations in Random Ising Chains at Zero Temperature | We present a general method to calculate the connected correlation function
of random Ising chains at zero temperature. This quantity is shown to relate to
the surviving probability of some one-dimensional, adsorbing random walker on a
finite intervall, the size of which is controlled by the strength of the
randomness.... | 1994-03-08 | 2009-10-22 | [
"cond-mat"
] | Ferenc Igloi |
cond-mat/9403030 | Equation of motion approach to the Hubbard model in infinite dimensions | We consider the Hubbard model on the infinite-dimensional Bethe lattice and
construct a systematic series of self-consistent approximations to the
one-particle Green's function, $G^{(n)}(\omega),\ n=2,3,\dots\ $ . The first
$n-1$ equations of motion are exactly fullfilled by $G^{(n)}(\omega)$ and the
$n$'th equation of... | 1994-03-08 | 2009-10-22 | [
"cond-mat"
] | Claudius Gros |
cond-mat/9403028 | Towards Observing the Intercommutation of Flux Tubes in Superconductors | We propose a simple experiment to investigate the intercommutation of flux
tubes in type II superconductors. Using this method the intercommutation of
strings can be observed directly and the dependence of intercommutation on the
angle of crossing of strings can also be analyzed. | 1994-03-08 | 2015-06-25 | [
"cond-mat",
"hep-ph"
] | Ajit M. Srivastava |
cond-mat/9403031 | Nonlinear Steady-State Mesoscopic Transport, I. Formalism | We present an approach to steady-state mesoscopic transport based on the
maximum entropy principle formulation of nonequilibrium statistical mechanics.
This approach is valid in the nonlinear regime of high current, and yields the
quantization observed in the integer quantum Hall effect at large currents. A
key ingredi... | 1994-03-08 | 2009-10-22 | [
"cond-mat"
] | M.D. Johnson and O. Heinonen |
cond-mat/9403025 | Nonlinear Bias and the Convective Fisher Equation | We combine random walks, growth and decay, and convection, in a Monte Carlo
simulation to model 1D interface dynamics with fluctuations. The continuum
limit corresponds to the deterministic Fisher equation with convection. We find
qualitatively the same type of asymmetry, as well as velocity difference, for
interface p... | 1994-03-07 | 2015-06-25 | [
"cond-mat"
] | Oliver Sch\"onborn, Rashmi C. Desai, and Dietrich Stauffer |
cond-mat/9403024 | Superconducting Fluctuations in a Multi-Band 1D Hubbard Model | A renormalization-group and bosonization approach for a multi-band Hubbard
Hamiltonian in one dimension is described. Based on the limit of many bands, it
is argued that this Hamiltonian with bare repulsive electron-electron
interactions is scaled under specific conditions to a model in which
superconducting fluctuatio... | 1994-03-07 | 2009-10-22 | [
"cond-mat"
] | M.I. Salkola and A.V. Balatsky |
cond-mat/9403023 | Effective lowering of the dimensionality in strongly correlated two
dimensional electron gas | We study a system of fermions interacting with a gauge field which can be
used to describe either spin liquid or $\nu=1/2$ Quantum Hall state. We propose
a generalized model with a dimensionless parameter $N$. We evaluate the
properties of the model in both limits $N \gg 1$ and $N \ll 1$ and deduce the
properties of th... | 1994-03-07 | 2007-05-23 | [
"cond-mat"
] | L. B. Ioffe, D. Lidsky, B. L. Altshuler |
cond-mat/9403026 | Phases of the 2D Hubbard model at low doping | We show that the planar spiral phase of the 2D Hubbard model at low doping,
x, is unstable towards a noncoplanar spin configuration. The novel equilibrium
state we found at low doping is incommensurate with the inverse pitch of the
spiral varying as x^(1/2), but nevertheless has a dominant peak in the
susceptibility at... | 1994-03-07 | 2009-10-22 | [
"cond-mat"
] | A.V.Chubukov and K.A.Musaelian |
cond-mat/9403022 | d-Wave Model for Microwave Response of High-Tc Superconductors | We develop a simple theory of the electromagnetic response of a d- wave
superconductor in the presence of potential scatterers of arbitrary s-wave
scattering strength and inelastic scattering by antiferromagnetic spin
fluctuations. In the clean London limit, the conductivity of such a system may
be expressed in "Drude"... | 1994-03-06 | 2009-10-22 | [
"cond-mat"
] | P. J. Hirschfeld, W. O. Putikka and D. J. Scalapino |
cond-mat/9403021 | Distinguishing d-wave from highly anisotropic s-wave superconductors | Systematic impurity doping in the Cu-O plane of the hole-doped cuprate
superconductors may allow one to decide between unconvention al ("d-wave") and
anisotropic conventional ("s-wave") states as possible candidates for the order
parameter in these materials. We show that potential scattering of any strength
always inc... | 1994-03-05 | 2010-04-05 | [
"cond-mat"
] | L.S. Borkowski and P.J. Hirschfeld |
cond-mat/9403020 | Density Expansion for the Mobility of Electrons in Helium Gas | We calculate the electron mobility for a quantum Lorentz model, which
provides a realistic description of electrons in Helium gas, to second order in
the gas density. We show that this provides sufficient theoretical information
to allow for an experimental observation of the famous logarithmic term in the
density expa... | 1994-03-04 | 2009-10-22 | [
"cond-mat"
] | K.I.Wysokinski, W.Park, D.Belitz, and T.R.Kirkpatrick |
cond-mat/9403019 | Quantum Resonances of Weakly Linked, Mesoscopic, Superconducting Dots | We examine quantum properties of mesoscopic, Josephson coupled
superconducting dots, in the limit that charging effects and quantization of
energy levels within the dots are negligible, but quasi-particle transmission
into the weak link is not. We demonstrate that quasi-particle resonances lead
to current-phase relatio... | 1994-03-04 | 2007-05-23 | [
"cond-mat"
] | A Martin and CJ Lambert |
cond-mat/9403010 | Condensate Formation in a Bose Gas | Using magnetically trapped atomic hydrogen as an example, we investigate the
prospects of achieving Bose-Einstein condensation in a dilute Bose gas. We show
that, if the gas is quenched sufficiently far into the critical region of the
phase transition, the typical time scale for the nucleation of the condensate
density... | 1994-03-03 | 2007-05-23 | [
"cond-mat"
] | H.T.C. Stoof |
cond-mat/9403018 | An Orbitally Degenerate Spin Fluctuation Model for Heavy Fermion
Superconductivity | In this paper, a generalization of standard spin fluctuation theory is
considered by replacing the simple Hubbard interaction by the screened
Hartree-Fock interaction for f electrons. This model is then used in both an LS
and a JJ coupling scheme to construct the particle-particle scattering vertex
in an on-site approx... | 1994-03-03 | 2009-10-22 | [
"cond-mat"
] | M. R. Norman |
cond-mat/9403017 | Quantum Hall Fluid of Vortices in a Two Dimensional Array of Josephson
Junctions | A two dimensional array of Josephson junctions in a magnetic field is
considered. It is shown that the dynamics of the vortices in the array
resembles that of electrons on a two--dimensional lattice put in a magnetic
field perpendicular to the lattice. Under appropriate conditions, this
resemblance results in the forma... | 1994-03-03 | 2009-10-22 | [
"cond-mat"
] | Ady Stern (Harvard University) |
cond-mat/9403014 | Incommensurate Phase on a Disordered Surface: Instability Against the
Formation of Overhangs and Finite Loops | The stability of the quenched incommensurate phase in two dimensions against
the creation of overhangs and finite loops (OH/FL) in the replica space is
investigated for a model of domain walls with $N$ colors. Introducing a
chemical potential $\epsilon$ for OH/FL, the probability for the formation of
these objects is s... | 1994-03-03 | 2009-10-22 | [
"cond-mat"
] | K. Ziegler and A.M.M. Pruisken |
cond-mat/9403012 | Elastic Co--Tunneling in a 1D Quantum Hole Approach | The influence of the phases of tunneling matrix elements on the rate of the
elastic co--tunneling at an ultrasmall normal--conducting double--junction is
studied in a simple quantum--hole approach at zero temperature. The results are
compared with experimental data. | 1994-03-03 | 2009-10-22 | [
"cond-mat"
] | Heinz-Olaf Muller, Andreas Hadicke, Wolfram Krech |
cond-mat/9403013 | Nesting Mechanism for d-symmetry Superconductors | A nested Fermi surface with nearly parallel orbit segments is found to yield
a singlet d-wave superconducting state at high temperatures for a restricted
range of the on-site Coulomb repulsion that avoids the competing spin density
wave instability. The computed superconducting transition temperature drops
dramatically... | 1994-03-03 | 2009-10-22 | [
"cond-mat"
] | J.Ruvalds, C.T.Rieck, S.Tewari, J.Thoma and A.Virosztek |
cond-mat/9403015 | Transport Properties of a One-Dimensional Two-Component Quantum Liquid
with Hyperbolic Interactions | We present an investigation of the sinh-cosh (SC) interaction model with
twisted boundary conditions. We argue that, when unlike particles repel, the SC
model may be usefully viewed as a Heisenberg-Ising fluid with moving
Heisenberg-Ising spins. We derive the Luttinger liquid relation for the
stiffness and the suscepti... | 1994-03-03 | 2016-08-14 | [
"cond-mat"
] | Rudolf A. R\"omer and Bill Sutherland |
cond-mat/9403016 | Effect of a magnetic field on Mott-Hubbard systems | The effect of a magnetic field on Mott-Hubbard systems is investigated by
studying the half-filled Hubbard model in the limit of infinite dimensions. A
first-order metamagnetic transition between the strongly correlated metal and
the Mott insulator is found for a critical value of the applied field. The
field and tempe... | 1994-03-03 | 2009-10-22 | [
"cond-mat"
] | Laurent Laloux, Antoine Georges and Werner Krauth |
cond-mat/9403011 | Looking at the Haldane Conjecture from a Grouptheoretical Point of View | Based on the Lieb-Schultz-Mattis construction we present a five parameter
family of Spin-1 Hamiltonians with degenerate groundstate. Starting from the
critical $SU(3)$ symmetric Hamiltonian, we look for those perturbations of the
$SU(3)$ symmetry, which leave the groundstate degenerate. We also discuss the
spin-3/2 $SU... | 1994-03-03 | 2009-10-22 | [
"cond-mat"
] | K.-H. M\"utter |
cond-mat/9403009 | Universal Statistics of Transport in Disordered Conductors | In low temperature limit, we study electron counting statistics of a
disordered conductor. We derive an expression for the distribution of charge
transmitted over a finite time interval by using a result from the random
matrix theory of quasi one dimensional disordered conductors. In the metallic
regime, we find that t... | 1994-03-02 | 2008-04-12 | [
"cond-mat"
] | Hyunwoo Lee, A. Yu. Yakovetz, and L. S. Levitov |
cond-mat/9403007 | The wavefunction renormalization constant for the one- and two- band
Hubbard hamiltonians in two dimensions | The wavefunction renormalization in the Hubbard model is studied, by using
well tested mean field tecniques. The 'orthogonality catastrophe' is shown to
exist, even in 2D, for doping levels sufficiently close to half filling. The
results are extended beyond mean field, by constructing delocalized
wavefunctions, with th... | 1994-03-02 | 2007-05-23 | [
"cond-mat"
] | E. Louis, G. Chiappe, J. Galan, F. Guinea and J. A. Verges |
cond-mat/9403008 | Negative 4-Probe Conductances of Mesoscopic Superconducting Wires | We analyze the longitudinal 4-probe conductance of mesoscopic normal and
superconducting wires and predict that in the superconducting case, large
negative values can arise for both the weakly disordered and localized regimes.
This contrasts sharply with the behaviour of the longitudinal 4-probe
conductance of normal w... | 1994-03-02 | 2009-10-22 | [
"cond-mat"
] | SJ Robinson, CJ Lambert and M Jeffery |
cond-mat/9403006 | The Parallel Complexity of Growth Models | This paper investigates the parallel complexity of several non-equilibrium
growth models. Invasion percolation, Eden growth, ballistic deposition and
solid-on-solid growth are all seemingly highly sequential processes that yield
self-similar or self-affine random clusters. Nonetheless, we present fast
parallel randomiz... | 1994-03-01 | 2009-10-22 | [
"cond-mat"
] | J. Machta and R. Greenlaw |
cond-mat/9403003 | Berezinskii-Kosterlitz-Thouless Transition in Spin-Charge Separated
Superconductor | A model for spin-charge separated superconductivity in two dimensions is
introduced where the phases of the spinon and holon order parameters couple
gauge-invariantly to a statistical gauge-field representing chiral
spin-fluctuations. The model is analyzed in the continuum limit and in the
low-temperature limit. In bot... | 1994-03-01 | 2009-10-22 | [
"cond-mat"
] | J.P. Rodriguez |
cond-mat/9403001 | Probing Spatial Correlations with Nanoscale Two-Contact Tunneling | Interference effects on the transport through two localized tunnel junctions
on the surface of a well-grounded sample reveal intrinsic spatial correlations
characteristic of the uncoupled sample. Differential conductances of the
two-junction probe are related to the spatial correlations of both normal and
superconducti... | 1994-03-01 | 2009-10-22 | [
"cond-mat"
] | Jeff M. Byers, Michael E. Flatte' |
cond-mat/9403004 | On Mean Field Glassy Dynamics out of Equilibrium | We study the off equilibrium dynamics of a mean field disordered systems
which can be interpreted both as a long range interaction spin glass and as a
particle in a random potential. The statics of this problem is well known and
exhibits a low temperature spin glass phase with continuous replica symmetry
breaking. We s... | 1994-03-01 | 2009-10-22 | [
"cond-mat"
] | S.Franz and M.M\'ezard |
cond-mat/9403005 | Finite Size Analysis of the Structure Factors in the Antiferromagnetic
XXZ Model | We perform a finite size analysis of the longitudinal and transverse
structure factors $S_j(p,\gamma,N),j=1,3$ in the groundstate of the
spin-$\frac{1}{2}$ XXZ model. Comparison with the exact results of Tonegawa for
the XX model yields excellent agreement. Comparison with the conjecture of
M\"uller, Thomas, Puga and B... | 1994-03-01 | 2009-10-22 | [
"cond-mat"
] | M. Karbach, K.-H. M\"utter and M. Schmidt |
cond-mat/9403002 | Phase Diagram of the Two-Dimensional Anderson-Hubbard Model | We study the ground state of the two-dimensional Anderson-Hubbard model using
a quantum real space renormalization group method. We obtain the phase diagram
near half filling. The system is always insulating with disorder. At half
filling, the system undergoes a transition from a gapless (Anderson) insulator
to an inco... | 1994-03-01 | 2007-05-23 | [
"cond-mat"
] | Jaichul Yi Lizeng Zhang and Geoff S Canright |
cond-mat/9402114 | Density-functional theory of freezing of vortex-liquid in quasi
two-dimensional superconductors | We present a theory of vortex liquid-to-solid transition in homogeneous quasi
2D superconductors. The free energy is written as a functional l of density of
zeroes of the fluctuating order parameter. The transition is weakly first-order
and well below the Hc2(T) line. Transition temperature, discontinuities of the
aver... | 1994-02-28 | 2009-10-22 | [
"cond-mat"
] | Igor Herbut and Zlatko Tesanovic |
cond-mat/9402112 | Cluster Variation Method, Pade` Approximants and Critical Behaviour | In the present paper we show how non--classical, quite accurate, critical
exponents can be extracted in a very simple way from the Pad\'e analysis of the
results obtained by mean field like approximation schemes, and in particular by
the cluster variation method. We study the critical behavior of the Ising model
on sev... | 1994-02-28 | 2009-10-22 | [
"cond-mat"
] | A. Pelizzola |
cond-mat/9402113 | BCS Superconductivity with Fixed Number Parity | We investigate superconductivity in a grand canonical ensemble with {\it
fixed number parity} (even or odd). In the low temperature limit we find small
corrections to the BCS gap equation and energy spectrum $E(k)$. The even-odd
free energy difference in the same limit decreases linearly with temperature,
in accordance... | 1994-02-28 | 2009-10-22 | [
"cond-mat"
] | Boldizsar Janko, Anders Smith, and Vinay Ambegaokar |
cond-mat/9402111 | Anomalous low-energy electron attachment in C_{60} | We propose that thermal electron attachment to C$_{60}$ should occur
preferentially in the p-wave channel, following an analysis of the vibron
excitation spectrum of C$_{60}^-$. A very simple model based on this idea is
shown to account very well for recent attachment data. The unexplained
activation energy of $\approx... | 1994-02-28 | 2015-06-25 | [
"cond-mat"
] | Erio Tosatti and Nicola Manini |
cond-mat/9402109 | Thermocycling experiments with the three-dimensional Ising spin glass
model | A characteristic feature of the non--equilibrium dynamics of real spin
glasses at low temperatures are strong aging effects. These phenomena can be
manipulated by changing the external parameters in various ways: a
thermo-cycling experiment consists for instance of a short heat pulse during
the waiting time, by which t... | 1994-02-27 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | Heiko Rieger |
cond-mat/9402106 | Interaction of a Magnetic Impurity with Strongly Correlated Conduction
Electrons | We consider a magnetic impurity which interacts by hybridization with a
system of strongly correlated conduction electrons. The latter are described by
a Hubbard Hamiltonian. By means of a canconical transformation the charge
degrees of freedom of the magnetic impurity are eliminated. The resulting
effective Hamiltonia... | 1994-02-25 | 2009-10-22 | [
"cond-mat"
] | Tom Schork and Peter Fulde |
cond-mat/9402107 | The spatial statistical properties of wave functions in a disordered
finite one-dimensional sample | For a given wave function one can define a quantity $\mu_E$ having a meaning
of its inverse spatial size. The Laplace transform of the distribution function
$P(\mu_E)$ is calculated analytically for a 1D disordered sample with a finite
length $L$. | 1994-02-25 | 2015-06-25 | [
"cond-mat"
] | I.V.Kolokolov (INFN, Sez.di Milano and Budker Institute of Nuclear
Physics, Novosibirsk Russia) |
cond-mat/9402108 | Randomness at the Edge: Theory of Quantum Hall transport at filling
$\nu=2/3$ | Current Luttinger liquid edge state theories for filling $\nu=2/3$ predict a
non-universal Hall conductance, in disagreement with experiment. Upon inclusion
of random edge tunnelling we find a phase transition into a new
disordered-dominated edge phase. An exact solution of the random model in this
phase gives a quanti... | 1994-02-25 | 2009-10-22 | [
"cond-mat"
] | C.L. Kane, M.P.A. Fisher and J. Polchinski |
cond-mat/9402110 | Model for Fracture in Fibrous Materials | A fiber bundle model in $(1+1)$-dimensions for the breaking of fibrous
composite matrix is introduced. The model consists of $N$ parallel fibers fixed
in two plates. When one of the plates is pulled in the direction parallel to
the fibers, these can be broken with a probability that depends on their
elastic energy. The... | 1994-02-25 | 2009-10-22 | [
"cond-mat"
] | A. T. Bernardes and J. G. Moreira |
cond-mat/9402105 | Lattice on Lattice in Two Dimensions | We study a harmonic triangular lattice, which relaxes in the presence of a
weak, short-wavelength periodic potential. Monte Carlo simulations reveal that
the elastic lattice has only short-ranged positional correlations, despite the
absence of defects in either lattice. Long-range orientational order, however,
persists... | 1994-02-25 | 2007-05-23 | [
"cond-mat"
] | Ronald Dickman and Eugene M. Chudnovsky |
cond-mat/9402104 | Impurity effects on chiral 1D electron systems | We studied low energy effects of impurities in several chiral 1D electron
systems that contain only excitations moving in one direction. We first
considered single-impurity scattering between two branches of 1D chiral
Luttinger liquids. The general form of impurity scattering matrix was found
which, some times, allow t... | 1994-02-24 | 2009-10-22 | [
"cond-mat"
] | Xiao-Gang Wen |
cond-mat/9402103 | Functional Integrals for Correlated Electrons | The application of functional integral methods and the Hubbard--Stratonovich
transformation to the Hubbard model is discussed. For the attractive case,
using a simple gauge transformation of the superconducting order parameter
field, the effective action for the low-energy phase excitations is derived.
Inclusion of the... | 1994-02-24 | 2007-05-23 | [
"cond-mat"
] | H.J. Schulz |
cond-mat/9402102 | Remarks on the Spectral Properties of Tight Binding and Kronig-Penney
Models with Substitution Sequences | We comment on some recent investigations on the electronic properties of
models associated to the Thue-Morse chain and point out that their conclusions
are in contradiction with rigorously proven theorems and indicate some of the
sources of these misinterpretations. We briefly review and explain the current
status of m... | 1994-02-24 | 2019-08-17 | [
"cond-mat"
] | A. Bovier, J.-M. Ghez |
cond-mat/9402098 | Statistical mechanics of one-dimensional s=1/2 anisotropic XY model in
transverse field with Dzyaloshinskii-Moriya interaction | For 1D s=1/2 anisotropic XY model in transverse field with
Dzyaloshinskii-Moriya interaction using Jordan-Wigner transformation the
thermodynamical functions, static spin correlation functions, transverse
dynamical spin correlation function and connected with it transverse dynamical
susceptibility have been obtained. I... | 1994-02-23 | 2007-05-23 | [
"cond-mat"
] | O.Derzhko, A.Moina |
cond-mat/9402101 | Dynamics of Spreading of Small Droplets of Chainlike Molecules on
Surfaces | Dynamics of spreading of small droplets on surfaces has been studied by the
molecular dynamics method. Simulations have been performed for mixtures of
solvent and dimer, and solvent and tetramer droplets. For solvent particles and
dimers, layering occurs leading to stepped droplet shapes. For tetramers such
shapes occu... | 1994-02-23 | 2009-10-22 | [
"cond-mat"
] | J. A. Nieminen and T. Ala- Nissila |
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