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/9507045 | Magnetic and pair correlations of the Hubbard model with
next-nearest-neighbor hopping | A combination of analytical approaches and quantum Monte Carlo simulations is
used to study both magnetic and pairing correlations for a version of the
Hubbard model that includes second-neighbor hopping $t^{\prime }=-0.35t$ as a
model for high-temperature superconductors. Magnetic properties are analyzed
using the Two... | 1995-07-14 | 2016-08-15 | [
"cond-mat",
"supr-con"
] | Alain F. Veilleux, Anne-Marie Dar\'e, Liang Chen, Y.M.Vilk, and
A.-M.S. Tremblay |
cond-mat/9507054 | Skyrmion Excitations in Quantum Hall Systems | Using finite size calculations on the surface of a sphere we study the
topological (skyrmion) excitation in quantum Hall system with spin degree of
freedom at filling factors around $\nu=1$. In the absence of Zeeman energy, we
find, in systems with one quasi-particle or one quasi-hole, the lowest energy
band consists o... | 1995-07-14 | 2009-10-28 | [
"cond-mat"
] | X.C. Xie and Song He |
cond-mat/9507048 | Quantum Spin Glasses in Finite Dimensions | The Ising spin glass model in a transverse field has a zero temperature phase
transition driven solely by quantum fluctuations. This quantum phase transition
occuring at a critical transverse field strength has attracted much attention
recently. We report the progress that has been made via Monte Carlo simulations
of t... | 1995-07-13 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Heiko Rieger and A. Peter Young |
cond-mat/9507046 | Off-Equilibrium Dynamics in Finite-Dimensional Spin Glass Models | The low temperature dynamics of the two- and three-dimensional Ising spin
glass model with Gaussian couplings is investigated via extensive Monte Carlo
simulations. We find an algebraic decay of the remanent magnetization. For the
autocorrelation function $C(t,t_w)=[< S_i(t+t_w)S_i(t_w)>]_{av}$ a typical
aging scenario... | 1995-07-13 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | J. Kisker, L. Santen, M. Schreckenberg and H. Rieger |
cond-mat/9507042 | Spin Fluctuations in an Itinerant Heisenberg System: Naive Rpa Treatment | The dynamical spin fluctuations in a two-dimensional square lattice in its
paramagnetic phase are examined within the framework of Random Phase
Approximation(RPA). Itinerant carriers with spin interact with each other via
an antiferromagnetic Heisenberg interaction. Then there appear three
fundamental scattering proces... | 1995-07-13 | 2009-10-28 | [
"cond-mat"
] | Junichiro Kishine |
cond-mat/9507047 | Aging in Disordered Systems | The dynamics of strongly disordered systems becomes extremely slow or glassy
at low temperatures, which results in a characteristic aging scenario. This
means that the outcome of measurements strongly depends on the history of the
system within the glassy phase, even on macroscopic time scale like hours,
weeks or years... | 1995-07-13 | 2015-06-25 | [
"cond-mat"
] | Heiko Rieger |
cond-mat/9507043 | Statistical Properties of Random Banded Matrices with Strongly
Fluctuating Diagonal Elements | The random banded matrices (RBM) whose diagonal elements fluctuate much
stronger than the off-diagonal ones were introduced recently by Shepelyansky as
a convenient model for coherent propagation of two interacting particles in a
random potential. We treat the problem analytically by using the mapping onto
the same sup... | 1995-07-13 | 2009-10-28 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Yan V. Fyodorov and Alexander D.Mirlin |
cond-mat/9507044 | Monte Carlo study of the random-field Ising model | Using a cluster-flipping Monte Carlo algorithm combined with a generalization
of the histogram reweighting scheme of Ferrenberg and Swendsen, we have studied
the equilibrium properties of the thermal random-field Ising model on a cubic
lattice in three dimensions. We have equilibrated systems of LxLxL spins, with
value... | 1995-07-13 | 2009-10-28 | [
"cond-mat"
] | M. E. J. Newman and G. T. Barkema |
cond-mat/9507049 | The Physical Significance of Singularities in the Chern--Simons Fermi
Liquid Description of a Partially Filled Landau Level | We analyze the linear response of a half filled Landau level to long
wavelength and low frequency driving forces, using Fermi liquid theory for
composite fermions. This response is determined by the composite fermions
quasi--particle effective mass, $m^*$, and quasi--particle Landau interaction
function $f(\theta-\thet... | 1995-07-13 | 2009-10-28 | [
"cond-mat"
] | Ady Stern and Bertrand I. Halperin (Harvard) |
cond-mat/9507037 | A new sound mode in liquid Helium 4? | This letter is based on the hypothesis of a small entropy content of the
superfluid fraction of liquid helium. We show that such a superfluid entropy
gives rise to a new sound mode in a ring-shaped superleak. This mode is named
sixth sound. We propose an experiment by which its sound velocity and thereby
the superfluid... | 1995-07-12 | 2009-10-28 | [
"cond-mat"
] | R. Schaefer, T. Fliessbach |
cond-mat/9507036 | Bloch Electron on a Triangular Lattice and Quantum Ising Model in a
Transverse Field | The tight binding model for an electron on an anisotropic triangular lattice
in a uniform magnetic field is studied using a decimation scheme. The model
exhibits a transition from critical to localized phase and the phase diagram is
described in terms of three nontrivial renormalization fixed points for the
band edges.... | 1995-07-12 | 2007-05-23 | [
"cond-mat"
] | Jukka A. Ketoja and Indubala I. Satija |
cond-mat/9507040 | Physical Properties of Metals from a Renormalization Group Standpoint | We derive the equilibrium and transport properties of metals using
renormalization group equations and finite-size scaling. Particular attention
is given to the well-known cases of Fermi and Luttinger liquids. An important
subtlety is that the temperature dependence of many transport coefficients is
determined by ``dan... | 1995-07-12 | 2015-06-25 | [
"cond-mat"
] | Chetan Nayak and Frank Wilczek |
cond-mat/9507033 | Critical Correlation Functions of the 2-Dimensional, 3-State Potts Model | We exploit the identification between the critical theory of the 3-state
Potts model and the D_5 conformal model. This allows us to determine all
3-point correlations involving the fields associated with the Potts order
parameter and the energy density. The calculation uses screened Coulomb gas
correlations. The Z_3 sy... | 1995-07-12 | 2007-05-23 | [
"cond-mat"
] | John McCabe and Tomasz Wydro |
cond-mat/9507035 | Linked Cluster Expansion Around Mean-Field Theories of Interacting
Electrons | A general expansion scheme based on the concept of linked cluster expansion
from the theory of classical spin systems is constructed for models of
interacting electrons. It is shown that with a suitable variational formulation
of mean-field theories at weak (Hartree-Fock) and strong (Hubbard-III) coupling
the expansion... | 1995-07-12 | 2009-10-28 | [
"cond-mat"
] | Vaclav Janis and Jan Schlipf |
cond-mat/9507034 | Scaling of Level Statistics at the Disorder-Induced Metal-Insulator
Transition | The distribution of energy level separations for lattices of sizes up to
28$\times$28$\times$28 sites is numerically calculated for the Anderson model.
The results show one-parameter scaling. The size-independent universality of
the critical level spacing distribution allows to detect with high precision
the critical d... | 1995-07-12 | 2009-10-28 | [
"cond-mat"
] | I. Kh. Zharekeshev and B. Kramer (1 Institute for Theoretical Physics,
University of Hamburg) |
cond-mat/9507041 | Frustrated Spin-Peierls Chains | We study the phase diagram, ground state properties, and excitation gaps of a
frustrated spin-Peierls chain, i.e. a spin-Peierls chain with both nearest
neighbor exchange $J_1$ and next nearest neighbor exchange $J_2$. The phase
diagram is calculated using a bosonization Renormalization-Group (RG) method.
We propose a ... | 1995-07-12 | 2009-10-28 | [
"cond-mat"
] | Jun Zang and A. R. Bishop (Los Alamos National Laboratory) D.
Schmeltzer (City College of CUNY) |
cond-mat/9507038 | The two-fluid model with superfluid entropy | The two-fluid model of liquid helium is generalized to the case that the
superfluid fraction has a small entropy content. We present theoretical
arguments in favour of such a small superfluid entropy. In the generalized
two-fluid model various sound modes of He$\;$II are investigated. In a
superleak carrying a persiste... | 1995-07-12 | 2015-06-25 | [
"cond-mat"
] | R. Schaefer, T. Fliessbach |
cond-mat/9507039 | Calculation of the Density of States Using Discrete Variable
Representation and Toeplitz Matrices | A direct and exact method for calculating the density of states for systems
with localized potentials is presented. The method is based on explicit
inversion of the operator $E-H$. The operator is written in the discrete
variable representation of the Hamiltonian, and the Toeplitz property of the
asymptotic part of the... | 1995-07-12 | 2009-10-28 | [
"cond-mat",
"chem-ph"
] | Eli Eisenberg, Asher Baram and Michael Baer |
cond-mat/9507030 | Universal Charge and Spin Response in Optimally Doped Antiferromagnets | Charge and spin response in the planar $t-J$ model at finite temperatures are
investigated numerically, in the regime corresponding to cuprates at
intermediate doping. We show that the local spin correlation function is
$T$-independent, leading to $\chi''(\omega<J) \propto \tanh (\omega/2 T)$. The
current correlation f... | 1995-07-11 | 2009-10-28 | [
"cond-mat"
] | J. Jaklic and P. Prelovsek (J. Stefan Institute) |
cond-mat/9507027 | Fundamental properties of a vortex in a d-wave superconductor | The vortex core structure in a d-wave superconductor is analyzed on the basis
of the quasi-classical Eilenberger theory beyond the Ginzburg-Landau framework.
The current and magnetic field distributions around an isolated vortex break
circular symmetry seen in s-wave pairing and show four-fold symmetry,
reflecting the ... | 1995-07-11 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | M. Ichioka, N. Hayashi, N. Enomoto, K. Machida |
cond-mat/9507031 | Kinetics of Aggregation-Annihilation Processes | We investigate the kinetics of many-species systems with aggregation of
similar species clusters and annihilation of opposite species clusters. We find
that the interplay between aggregation and annihilation leads to rich kinetic
behaviors and unusual conservation laws. On the mean-field level, an exact
solution for th... | 1995-07-11 | 2009-10-28 | [
"cond-mat"
] | E. Ben-Naim and P.L. Krapivsky |
cond-mat/9507028 | Quantum interference and the spin orbit interaction in mesoscopic
normal-superconducting junctions | We calculate the quantum correction to the classical conductance of a
disordered mesoscopic normal-superconducting (NS) junction in which the
electron spatial and spin degrees of freedom are coupled by an appreciable spin
orbit interaction. We use random matrix theory to describe the scattering in
the normal part of th... | 1995-07-11 | 2009-10-28 | [
"cond-mat"
] | Keith Slevin, Jean-Louis Pichard and P. A. Mello |
cond-mat/9507029 | Effects of a weak disorder on two coupled Hubbard chains | We consider the effect of weak nonmagnetic disorder on two chains of
interacting fermions (with and without spins) coupled by interchain hopping.
For the spinless case, interchain hopping increases localization for repulsive
interactions but {\it stabilizes} the s-wave superconducting phase for
attractive interactions.... | 1995-07-11 | 2009-10-28 | [
"cond-mat"
] | E. Orignac, T. Giamarchi |
cond-mat/9507032 | Universal relation between Green's functions in random matrix theory | We prove that in random matrix theory there exists a universal relation
between the one-point Green's function $G$ and the connected two- point Green's
function $G_c$ given by \vfill $ N^2 G_c(z,w) = {\part^2 \over \part z \part w}
\log (({G(z)- G(w) \over z -w}) + {\rm {irrelevant \ factorized \ terms.}} $
This relati... | 1995-07-11 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Anthony Zee (Institute for Theoretical Physics, UC Santa Barbara),
Edouard Br\'ezin (\'Ecole Normale Sup\'erieure, Paris) |
cond-mat/9507026 | Coulomb Drag of Edge Excitations in the Chern-Simons Theory of the
Fractional Quantum Hall Effect | Long range Coulomb interaction between the edges of a Hall bar changes the
nature of the gapless edge excitations. Instead of independent modes
propagating in opposite directions on each edge as expected for a short range
interaction one finds elementary excitations living simultaneously on both
edges, i.e. composed of... | 1995-07-10 | 2009-10-28 | [
"cond-mat"
] | Dror Orgad and Shimon Levit |
cond-mat/9507025 | Numerical Results For The 2D Random Bond 3-state Potts Model | We present results of a numerical simulation of the 3-state Potts model with
random bond, in two dimension. In particular, we measure the critical exponent
associated to the magnetization and the specific heat. We also compare these
exponents with recent analytical computations. | 1995-07-09 | 2009-10-28 | [
"cond-mat",
"hep-lat",
"hep-th"
] | Marco Picco |
cond-mat/9507024 | "Classical" Vortex Nucleation in Superflow Through Small Orifices | We report on numerical solutions of the Gross-Pitaevskii equation for
two-dimensional flow of a superfluid condensate through a small orifice. Above
a critical velocity of about $30\%$ of the speed of sound, cavitation occurs in
the throat of the orifice. The cavitating bubbles form the cores of singly
quantized vortic... | 1995-07-09 | 2007-05-23 | [
"cond-mat"
] | Ajit Srivastava, Michael Stone |
cond-mat/9507023 | Liquids with Chiral Bond Order | I describe new phases of a chiral liquid crystal with nematic and hexatic
order. I find a conical phase, similar to that of a cholesteric in an applied
magnetic field for Frank elastic constants $K_2>K_3$. I discuss the role of
fluctuations in the context of this phase and the possibility of satisfying the
inequality f... | 1995-07-08 | 2009-10-28 | [
"cond-mat",
"chem-ph"
] | Randall D. Kamien |
cond-mat/9507022 | Localization in Quasi-1D Systems with Random Magnetic Field | We investigate the localization of electrons hopping on quasi-1D strips in
the presence of random magnetic field. In the weak-disorder region, by
perturbative analytical techniques, we derive scaling laws for the localization
length, ${\xi}$, of the form $ \xi \propto \frac{1}{w^{\eta}}$, where $w$ is
the size of magne... | 1995-07-08 | 2009-10-28 | [
"cond-mat"
] | Yakov Rutman, Mario Feingold and Yshai Avishai (Dept. of Physics,
Ben-Gurion University, Beer-Sheva, Israel ) |
cond-mat/9507019 | Dynamic Scaling Phenomena in Growth Processes | Inhomogeneities in deposition may lead to formation of rough surfaces, whose
height fluctuations can be probed directly by scanning microscopy, or
indirectly by scattering. Analytical or numerical treatments of simple growth
models suggest that, quite generally, the height fluctuations have a
self-similar character. Th... | 1995-07-07 | 2009-10-28 | [
"cond-mat"
] | Mehran Kardar |
cond-mat/9507021 | Polarization Selection Rules and Superconducting Gap Anisotropy in
$Bi_2Sr_2CaCu_2O_8$ | We discuss polarization selection rules for angle-resolved photoemission
spectroscopy in Bi2212. Using these we show that the ``hump'' in the
superconducting gap observed in the $X$ quadrant in our earlier work is not on
the main $CuO_2$ band, but rather on an umklapp band arising from the
structural superlattice. The ... | 1995-07-07 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | M.R. Norman, M. Randeria, H. Ding, J.C. Campuzano, and A.F. Bellman |
cond-mat/9507020 | Electronic excitations in Bi$_2$Sr$_2$CaCu$_2$O$_8$ : Fermi surface,
dispersion, and absence of bilayer splitting | From a detailed study, including polarization dependence, of the normal state
angle-resolved photoemission spectra for Bi$_2$Sr$_2$CaCu$_2$O$_8$, we find
only one CuO$_2$ band related feature. All other spectral features can be
ascribed either to umklapps from the superlattice or to ``shadow bands''. Even
though the di... | 1995-07-07 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | H. Ding, A.F. Bellman, J.C. Campuzano, M. Randeria, M.R. Norman, T.
Yokoya, T. Takahashi, H. Katayama-Yoshida, T. Mochiku, K. Kadowaki, G.
Jennings, and G.P. Brivio |
cond-mat/9507018 | Nonlinear magneto-optical Kerr spectra of thin ferromagnetic iron films
calculated with ab initio theory | Using a spin-polarized full-potential linear muffin-tin orbital method we
present calculations of the nonlinear magneto-optical Kerr effect for thin bcc
Fe films within a slab geometry. Film layer dependent contributions to the Kerr
spectrum are determined. Thus, we calculate the magneto-optical Kerr spectra
for the li... | 1995-07-07 | 2009-10-28 | [
"cond-mat"
] | U. Pustogowa, W. Hubner, and K. H. Bennemann |
cond-mat/9507012 | The Spectrum of the two dimensional Hubbard model at low filling | Using group theoretical and numerical methods we have calculated the exact
energy spectrum of the two-dimensional Hubbard model on square lattices with
four electrons for a wide range of the interaction strength. All known
symmetries, i.e.\ the full space group symmetry, the SU(2) spin symmetry, and,
in case of a bipar... | 1995-07-06 | 2009-10-28 | [
"cond-mat"
] | Henrik Bruus and Jean-Christian Angles d'Auriac |
cond-mat/9507011 | Estimate of Minimal Noise in a Quantum Conductor | We study zero temperature fluctuations of charge flow in a metallic loop
induced by time dependent magnetic flux, and solve for the optimal way of
varying flux in order to minimize noise. Optimal time dependence of the flux is
a sum of ``solitons,'' each corresponding to quantized flux change. Minimal
noise coincides w... | 1995-07-06 | 2007-05-23 | [
"cond-mat"
] | Hyunwoo Lee and L. S. Levitov |
cond-mat/9507016 | Spin-Singlet to Spin Polarized Phase Transition at $\nu=2/3$:
Flux-Trading in Action | We analyze the phase transition between spin-singlet and spin-polarized
states which occurs at $\nu=2/3$. The basic strategy is to use adiabatic
flux-trading arguments to relate this transition to the analogous transition at
$\nu=2$. The transition is found to be similar to a transition in ferromagnets.
In our analysis... | 1995-07-06 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Chetan Nayak and Frank Wilczek |
cond-mat/9507017 | Study of ARPES data and d-wave superconductivity using electronic models
in two dimensions | We review the results of an extensive investigation of photoemission spectral
weight using electronic models for the high-Tc superconductors. Here we show
that some recently reported unusual features of the cuprates namely the
presence of (i) flat bands, (ii) small quasiparticle bandwidths, and (iii)
antiferromagnetica... | 1995-07-06 | 2009-10-28 | [
"cond-mat"
] | A. Moreo, A. Nazarenko, S. Haas, A. Sandvik, and E. Dagotto |
cond-mat/9507010 | Surface critical behaviour of the honeycomb O(n) loop model with mixed
ordinary and special boundary conditions | The O(n) loop model on the honeycomb lattice with mixed ordinary and special
boundary conditions is solved exactly by means of the Bethe ansatz. The
calculation of the dominant finite-size corrections to the eigenspectrum yields
the mixed boundary scaling index and the geometric scaling dimensions
describing the univer... | 1995-07-06 | 2014-10-13 | [
"cond-mat",
"hep-th"
] | M T Batchelor and C M Yung |
cond-mat/9507013 | Antiferromagnetic Interactions and the Superconducting Gap Function | Spin-fluctuation-mediated superconductivity is conventionally associated with
d_{x^2-y^2} pairing. We show that a generalized model of antiferromagnetic spin
fluctuations in three dimensions may also yield a state with formal ``s-wave''
(A_{1g}) symmetry but with line nodes at k_z \approx \pm \pi / 2c. We study
this ne... | 1995-07-06 | 2009-10-28 | [
"cond-mat"
] | R. J. Radtke, A. I. Liechtenstein, V. M. Yakovenko, and S. Das Sarma |
cond-mat/9507014 | Roughening and preroughening in the six vertex model with an extended
range of interaction | We study the phase diagram of the BCSOS model with an extended interaction
range using transfer matrix techniques, pertaining to the (100) surface of
single component fcc and bcc crystals. The model shows a 2x2 reconstructed
phase and a disordered flat phase. The deconstruction transition between these
phases merges wi... | 1995-07-06 | 2009-10-28 | [
"cond-mat"
] | Paul J.M. Bastiaansen and Hubert J.F. Knops |
cond-mat/9507015 | Phases of Josephson Junction Ladders | We study a Josephson junction ladder in a magnetic field in the absence of
charging effects via a transfer matrix formalism. The eigenvalues of the
transfer matrix are found numerically, giving a determination of the different
phases of the ladder. The spatial periodicity of the ground state exhibits a
devil's staircas... | 1995-07-06 | 2009-10-28 | [
"cond-mat"
] | Colin Denniston (Princeton Univ.), Chao Tang (NEC Research Inst.) |
cond-mat/9507009 | Extremal Properties of Random Systems | We find that the probability distribution for the largest intervals $p(l)$
exhibits universal properties for different systems including random walk and
random cutting models. In particular, $p(l)$ has an infinite set of
singularities at $l=1/k$ with $k=2,3,\ldots$ which become weaker and weaker as
$k \to \infty$; addi... | 1995-07-05 | 2009-10-28 | [
"cond-mat"
] | L. Frachebourg, I. Ispolatov, and P. L. Krapivsky |
cond-mat/9507005 | Randomly Charged Polymers, Random Walks, and Their Extremal Properties | Motivated by an investigation of ground state properties of randomly charged
polymers, we discuss the size distribution of the largest Q-segments (segments
with total charge Q) in such N-mers. Upon mapping the charge sequence to
one--dimensional random walks (RWs), this corresponds to finding the
probability for the la... | 1995-07-04 | 2009-10-28 | [
"cond-mat"
] | Deniz Ertas (MIT) and Yacov Kantor (Tel Aviv U.) |
cond-mat/9507007 | Inter-Particle Distribution Functions for One-Species Diffusion-Limited
Annihilation, A+A->0 | Diffusion-limited annihilation, $A+A\to 0$, and coalescence, $A+A\to A$, may
both be exactly analyzed in one dimension. While the concentrations of $A$
particles in the two processes bear a simple relation, the inter-particle
distribution functions (IPDF) exhibit remarkable differences. However, the IPDF
is known exact... | 1995-07-04 | 2009-10-28 | [
"cond-mat"
] | Pablo A. Alemany and Daniel ben-Avraham |
cond-mat/9507006 | Zero-temperature magnetism in the periodic Anderson model in the limit
of large dimensions | We study the magnetism in the periodic Anderson model in the limit of large
dimensions by mapping the lattice problem into an equivalent local impurity
self-consistent model. Through a recently introduced algorithm based on the
exact diagonalization of an effective cluster hamiltonian, we obtain solutions
with and with... | 1995-07-04 | 2009-10-28 | [
"cond-mat"
] | Marcelo J. Rozenberg |
cond-mat/9507008 | Spectral Properties of the Anderson Impurity Model, Comparison of
Numerical Renormalization Group and Non--Crossing Approximation | A comparative study of the numerical renormalization group and non-crossing
approximation results for the spectral functions of the $U=\infty$ Anderson
impurity model is carried out. The non-crossing approximation is the simplest
conserving approximation and has led to useful insights into strongly
correlated models of... | 1995-07-04 | 2009-10-28 | [
"cond-mat"
] | T. A. Costi, J. Kroha and P. Wolfle |
cond-mat/9507001 | Fundamental steps of group velocity for slow surface polariton under the
quantum hall effect conditions | A new type of collective electromagnetic excitations, namely surface
polaritons (SP) --- in a 2D electronic layer in a high magnetic field under
Quantum Hall Effect (QHE) conditions is predicted. We have found the spectrum,
damping, and polarization of the SP in a wide range of frequencies $\omega$ and
wavevectors $\bf... | 1995-07-03 | 2007-05-23 | [
"cond-mat"
] | Igor E. Aronov and Nikolai N. Beletskij |
cond-mat/9507004 | Sensitivity of quantum chaotic wavefunction intensities to changes in
external perturbations | We examine the sensitivity of wavefunction intensities in chaotic quantum
systems to small changes in an arbitrary external perturbation. A universal
scaling is proposed for all three Dyson ensembles and a novel theoretical
approach is used to determine exact expressions for systems which violate
T-invariance. Analytic... | 1995-07-03 | 2009-10-28 | [
"cond-mat"
] | E. R. Mucciolo, B. D. Simons, A. V. Andreev, and V. N. Prigodin |
cond-mat/9507002 | Optical Conductivity in Mott-Hubbard Systems | We study the transfer of spectral weight in the optical spectra of a strongly
correlated electron system as a function of temperature and interaction
strength. Within a dynamical mean field theory of the Hubbard model that
becomes exact in the limit of large lattice coordination, we predict an
anomalous enhancement of ... | 1995-07-03 | 2009-10-28 | [
"cond-mat"
] | M. J. Rozenberg, G. Kotliar, H. Kajueter, G. A. Thomas, D. H. Rapkine,
J. M. Honig, P. Metcalf |
cond-mat/9506145 | Field Theories of Frustrated Heisenberg Antiferromagnets | We study the Heisenberg antiferromagnetic chain with both dimerization and
frustration. The classical ground state has three phases: a Neel phase, a
spiral phase and a colinear phase. In each phase, we discuss a non-linear sigma
model field theory governing the low energy excitations. We study the theory in
the spiral ... | 1995-07-02 | 2014-04-30 | [
"cond-mat",
"hep-th"
] | Sumathi Rao and Diptiman Sen |
cond-mat/9506142 | One-Dimensional t-J Model from a Variational Viewpoint | The one-dimensional (1D) $t$-$J$ model is investigated by using a
Gutzwiller-Jastrow-type variation method and the exact diagonalization of small
systems. Variational expectation values are estimated by the variational Monte
Carlo method with sufficient accuracy. First, we represent the diagonalization
results. Physica... | 1995-07-01 | 2009-10-28 | [
"cond-mat"
] | Hisatoshi Yokoyama and Masao Ogata |
cond-mat/9506143 | ORVB Mean-Field Calculation in the Tight-Binding Model with
Anti-Ferromagnetic Exchange | We give a mean-field calculation for the odd-resonating-valence-bond ORVB
pairing scheme. We obtain interesting quasi-particle excitation energy $E_{\bf
k}$ as a function of momentum ${\bf k}$. It is distinctively different from
those of the $d_{x^2-y^2}$-wave, the anisotropic-s-wave, and the p-wave. It is
a gapless th... | 1995-07-01 | 2007-05-23 | [
"cond-mat"
] | Ling-Lie Chau (UCD) and Ding-Wei Huang (CYCU) |
cond-mat/9506144 | Current-Carrying Ground States in Mesoscopic and Macroscopic Systems | We extend a theorem of Bloch, which concerns the net orbital current carried
by an interacting electron system in equilibrium, to include mesoscopic
effects. We obtain a rigorous upper bound to the allowed ground-state current
in a ring or disc, for an interacting electron system in the presence of static
but otherwise... | 1995-07-01 | 2009-10-28 | [
"cond-mat"
] | Michael R. Geller |
cond-mat/9506141 | Ensemble density functional theory of the fractional quantum Hall effect | We develop an ensemble density functional theory for the fractional quantum
Hall effect using a local density approximation. Model calculations for edge
reconstructions of a spin-polarized quantum dot give results in good agreement
with semiclassical and Hartree-Fock calculations, and with small system
numerical diagon... | 1995-07-01 | 2009-10-28 | [
"cond-mat"
] | O. Heinonen, M.I. Lubin and M.D. Johnson (Department of Physics,
University of Central Florida, Orlando, FL) |
cond-mat/9506140 | Infrared Conductivity of Cuprate Metals: Detailed Fit Using Luttinger
Liquid Theory | Measurements of infrared conductivity in the normal state of the cuprate
layer metals show a characteristic behavior in the plane of the layers which is
in essential agreement among many experiments. A simple parametrization of this
behavior, proposed originally by Collins and Schlesinger, and exploited by N.
Bontemps ... | 1995-06-30 | 2007-05-23 | [
"cond-mat"
] | P.W. Anderson |
cond-mat/9506139 | Directed percolation conjecture for cellular automata revisited | The directed percolation (DP) hypothesis for stochastic, range-4 cellular
automata with acceptance rule $y \le\sum_{j=-4}^4 s_{i-j} \le 6$, in cases of
$y < 6$ was investigated in one and two dimensions. Simulations, mean-field
renormalization group and coherent anomaly calculations show that in one
dimension the phase... | 1995-06-30 | 2009-10-28 | [
"cond-mat",
"hep-lat"
] | G\'eza \'Odor and Attila Szolnoki |
cond-mat/9506138 | Zero-bias Anomaly of Tunneling into the Edge of a 2D Electron System | We investigate the electron tunneling into the edge of a clean weakly
interacting two-dimensional electron gas. It is shown that the corresponding
differential conductance $G(V)$ has a cusp at zero bias, and is characterized
by a universal slope $|dG/dV|$ at $V=0$. This singularity originates from the
electron scatteri... | 1995-06-30 | 2009-10-28 | [
"cond-mat"
] | L. Shekhtman and L.I. Glazman |
cond-mat/9506137 | Theory of Nuclear Magnetic Relaxation in Haldane Gap Antiferromagnets | A theory of Nuclear Magnetic Resonance (NMR) is developed for integer-spin,
one-dimensional antiferromagnets, which exhibit the Haldane gap. We consider
free boson, free fermion and non-linear sigma model approaches, all of which
give similar results. Detailed anisotropy and magnetic field dependence is
calculated and ... | 1995-06-29 | 2009-10-28 | [
"cond-mat"
] | Jacob Sagi and Ian Affleck |
cond-mat/9506135 | Modulated structures stabilised by spin softening: an expansion in
inverse spin anisotropy | We develop an analytic approach which allows us to study the behaviour of
spin models with competing interactions and $p$-fold spin anisotropy, $D$, in
the limit where the pinning potential which results from $D$ is large. This is
an expansion in inverse spin anisotropy which must be carried out to all orders
where nec... | 1995-06-29 | 2007-05-23 | [
"cond-mat"
] | F. Seno and J.M. Yeomans |
cond-mat/9506134 | Dynamics of An Underdamped Josephson Junction Ladder | We show analytically that the dynamical equations for an underdamped ladder
of coupled small Josephson junctions can be approximately reduced to the
discrete sine-Gordon equation. As numerical confirmation, we solve the coupled
Josephson equations for such a ladder in a magnetic field. We obtain
discrete-sine-Gordon-li... | 1995-06-29 | 2009-10-28 | [
"cond-mat"
] | Seungoh Ryu, Wenbin Yu, and D. Stroud |
cond-mat/9506136 | Theory for the Interdependence of High-T$_c$ Superconductivity and
Dynamical Spin Fluctuations | The doping dependence of the superconducting state for the 2D one-band
Hubbard Hamiltonian is determined. By using an Eliashberg-type theory, we find
that the gap function $\Delta_{\bf k}$ has a $d_{x^2-y^2}$ symmetry in momentum
space and T$_c$ becomes maximal for $13 \; \%$ doping. Since we determine the
dynamical ex... | 1995-06-29 | 2009-10-28 | [
"cond-mat"
] | S. Grabowski, J. Schmalian, M. Langer, and K. H. Bennemann |
cond-mat/9506130 | Comment on ``Monte Carlo Algorithms with Absorbing Markov Chains: Fast
Local Algorithms for Slow Dynamics`` | We give a corrected version of the algorithm presented within the commented
paper by M.A. Novotny, Phys. Rev. Lett. Vol. 74, 1 (1995) (cond-mat/9411086) | 1995-06-28 | 2016-08-31 | [
"cond-mat"
] | Kurt Broderix, Reiner Kree |
cond-mat/9506127 | Finite-Band-width Effects on the Transition Temperature and NMR
Relaxation Rate of Impure Superconductors | We study the thermodynamic properties of impure superconductors by explicitly
taking into consideration the finiteness of electronic bandwidths within the
phonon-mediated Eliashberg formalism. For a finite electronic bandwidth, the
superconducting transition temperature, $T_c$, is suppressed by nonmagnetic
impurity sca... | 1995-06-28 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | Han-Yong Choi (Sung Kyun Kwan University) |
cond-mat/9506131 | Representations of the quadratic Algebra and Partially Asymmetric
Diffusion with Open Boundaries | We consider the one-dimensional partially asymmetric exclusion model with
open boundaries. The model describes a system of hard-core particles that hop
stochastically in both directions with different rates. At both boundaries
particles are injected and extracted. By means of the method of Derrida, Evans,
Hakim and Pas... | 1995-06-28 | 2009-10-28 | [
"cond-mat",
"math.QA",
"q-alg"
] | Fabian H.L. Essler and Vladimir Rittenberg |
cond-mat/9506132 | Calculation of the single-particle Green's function of interacting
fermions in arbitrary dimension via functional bosonization | The single-particle Green's function of an interacting Fermi system with
dominant forward scattering is calculated by decoupling the interaction by
means of a Hubbard-Stratonowich transformation involving a bosonic auxiliary
field $\phi^{\alpha}$. We obtain a higher dimensional generalization of the
well-known one-dime... | 1995-06-28 | 2007-05-23 | [
"cond-mat"
] | Peter Kopietz |
cond-mat/9506133 | Evidence for Skyrmions and Single Spin Flips in the Integer Quantized
Hall Effect | We have employed tilted-field magneto-transport measurements of the energy
gap for the odd-integer quantized Hall states at Landau level filling factors
$\nu = 1$,3 and 5 to determine the spin of thermally excited
quasielectron-quasihole pairs. At $\nu = 1$ our data show that as many as 7
electron spin flips accompany ... | 1995-06-28 | 2009-10-28 | [
"cond-mat"
] | A. Schmeller, J.P. Eisenstein, L.N. Pfeiffer, K.W. West (AT&T Bell
Laboratories, Murray Hill, NJ) |
cond-mat/9506128 | Strongly-interacting model for antiferromagnetism in one-dimensional
C60-polymers: A1C60 | We study the antiferromagnetic phase of the C60-polymer doped with one
electron per one C60 by using a tight-binding model with long-range Coulomb
interactions. The model is solved by the unrestricted Hartree-Fock
approximation, and a phase diagram is obtained by changing Coulomb interaction
strengths and a conjugation... | 1995-06-28 | 2008-02-03 | [
"cond-mat",
"chem-ph",
"mtrl-th"
] | Kikuo Harigaya (ETL in Tsukuba) |
cond-mat/9506125 | Effect of Proximity Coupling of Chains and Planes on the Penetration
Depth Anisotropy in Y_1Ba_2Cu_3O_7 | We calculate the penetration depth $\lambda$ in the $a$, $b$ and $c$
directions for a simple model of YBa$_2$Cu$_3$O$_7$. In this model there are
two layers---representing a CuO$_2$ plane and a CuO chain---per unit cell.
There is a BCS--like pairing (both $s$ wave and $d$ wave are considered)
interaction localised in t... | 1995-06-28 | 2009-10-28 | [
"cond-mat"
] | W. A. Atkinson and J. P. Carbotte |
cond-mat/9506129 | Splitting the multiphase point | Models with competing interactions, for example the ANNNI model, can have
special points at which the ground state is infinitely degenerate, so-called
multiphase points. Small perturbations can lift this degeneracy and give rise
to infinite sequences of long-period phases. This paper compares the effect of
three possib... | 1995-06-28 | 2007-05-23 | [
"cond-mat"
] | J.M. Yeomans |
cond-mat/9506124 | Composite-Fermion Analysis of the Double-Layer Fractional Quantum Hall
System | Effect of interlayer tunneling in the double-layer fractional quantum Hall
system at the total Landau level filling of $\nu=1/m$ ($m$: odd integer) is
analyzed with the composite-fermion approach in which the flux attachment is
directly applied to the electron-electron interaction. A comparison with a
numerical result ... | 1995-06-28 | 2009-10-28 | [
"cond-mat"
] | T. Nakajima and H. Aoki |
cond-mat/9506123 | Hidden Breit-Wigner distribution and other properties of random matrices
with preferential basis | We study statistical properties of a class of band random matrices which
naturally appears in systems of interacting particles. The local spectral
density is shown to follow the Breit-Wigner distribution in both localized and
delocalized regimes with width independent on the band/system size. We analyse
the implication... | 1995-06-27 | 2009-10-28 | [
"cond-mat"
] | Ph. Jacquod and D.L.Shepelyansky |
cond-mat/9506119 | Integrable Electron Model with Correlated Hopping and Quantum
Supersymmetry | We give the quantum analogue of a recently introduced electron model which
generalizes the Hubbard model with additional correlated hopping terms and
electron pair hopping. The model contains two independent parameters and is
invariant with respect to the quantum superalgebra $U_q(gl(2|1))$. It is
integrable in one dim... | 1995-06-27 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Mark D. Gould, Katrina E. Hibberd, Jon R. Links and Yao-Zhong Zhang |
cond-mat/9506120 | Nonperturbative approach to the Hubbard model in C60 cluster | We propose a computational scheme for the Hubbard model in the C60 cluster in
which the interaction with the Fermi sea of charges added to the neutral
molecule is switched on sequentially. This is applied to the calculation of the
balance of charging energies, within a low-energy truncation of the space of
states which... | 1995-06-27 | 2009-10-28 | [
"cond-mat"
] | J. Gonzalez and J. V. Alvarez |
cond-mat/9506126 | Microscopic Theory for Multiple Light Scattering in Magnetic Fields | We present a microscopic theory for multiple light scattering occurring in
inhomogeneous 3D media subject to an external magnetic field. Magneto-optical
effects (the Faraday effect and the Cotton-Mouton effect) occur inside the
small inhomogeneities. We thereby take into account the spatial anisotropy,
time-reversal-sy... | 1995-06-27 | 2007-05-23 | [
"cond-mat"
] | Bart A. van Tiggelen, Roger Maynard, and Theo M. Nieuwenhuizen |
cond-mat/9506121 | Theoretical Study of Fluid Membranes of Spherical Topology with Internal
Degrees of Freedom | A theoretical study of vesicles of topological genus zero is presented. The
bilayer membranes forming the vesicles have various degrees of intrinsic
(tangent-plane) orientational order, ranging from smectic to hexatic,
frustrated by curvature and topology. The field-theoretical model for these
`$n$-atic' surfaces has b... | 1995-06-27 | 2009-10-28 | [
"cond-mat"
] | R.M.L. Evans (Manchester University) |
cond-mat/9506122 | Heterogeneous Catalysis on a Disordered Surface | We introduce a simple model of heterogeneous catalysis on a disordered
surface which consists of two types of randomly distributed sites with
different adsorption rates. Disorder can create a reactive steady state in
situations where the same model on a homogeneous surface exhibits trivial
kinetics with no steady state... | 1995-06-27 | 2009-10-28 | [
"cond-mat"
] | L. Frachebourg, P. L. Krapivsky and S. Redner |
cond-mat/9506115 | Fractional dimensional Fock space and Haldane's exclusion statistics.
q/p case | The discussion of Fractional dimensional Hilbert spaces in the context of
Haldane exclusion statistics is extended from the case \cite{IG} of $g=1/p$ for
the statistical parameter to the case of rational $g=q/p$ with $q,p$-coprime
positive integers. The corresponding statistical mechanics for a gas of such
particles is... | 1995-06-26 | 2015-06-25 | [
"cond-mat"
] | K.N.Ilinski and J.M.F.Gunn |
cond-mat/9506117 | Weak universality in the two dimensional randomly disordered three-state
Potts ferromagnet | For the two dimensional randomly disordered three-state Potts ferromagnet, we
find numerically that the critical exponent $\eta$ unchanges with the degree of
disorder while those of the correlation length ($\nu$) and magnetic
susceptibility ($\gamma$) increase with it continuously. We discuss some
consequences of the f... | 1995-06-26 | 2009-10-28 | [
"cond-mat"
] | Jae-Kwon Kim |
cond-mat/9506116 | Contacts and Edge State Equilibration in the Fractional Quantum Hall
Effect | We develop a simple kinetic equation description of edge state dynamics in
the fractional quantum Hall effect (FQHE), which allows us to examine in detail
equilibration processes between multiple edge modes. As in the integer quantum
Hall effect (IQHE), inter-mode equilibration is a prerequisite for quantization
of the... | 1995-06-26 | 2009-10-28 | [
"cond-mat"
] | C.L. Kane, Matthew P.A. Fisher |
cond-mat/9506114 | Universal Fluctuations in Spectra of Disordered Systems at the Anderson
Transition | Using the level--spacing distribution and the total probability function of
the numbers of levels in a given energy interval we analyze the crossover of
the level statistics between the delocalized and the localized regimes. By
numerically calculating the electron spectra of systems of up to $32^3$ lattice
sites descri... | 1995-06-25 | 2009-10-28 | [
"cond-mat"
] | Isa Kh. Zharekeshev and Bernhard Kramer |
cond-mat/9506113 | Chern-Simons Field Theory of Two-Dimensional Electrons in the Lowest
Landau Level | We propose a fermion Chern-Simons field theory describing two- dimensional
electrons in the lowest Landau level. This theory is constructed with a
complete set of states, and the lowest Landau level constraint is enforced
through a delta-functional described by an auxiliary field lambda. Unlike the
field theory constru... | 1995-06-24 | 2009-10-28 | [
"cond-mat"
] | Lizeng Zhang |
cond-mat/9505110 | Enhanced Charge and Spin Currents in the One-Dimensional Disordered
Mesoscopic Hubbard Ring | We consider a one-dimensional mesoscopic Hubbard ring with and without
disorder and compute charge and spin stiffness as a measure of the permanent
currents. For finite disorder we identify critical disorder strength beyond
which the charge currents in a system with repulsive interactions are {\em
larger} than those fo... | 1995-06-24 | 2009-10-28 | [
"cond-mat"
] | Rudolf A. R\"omer (JNCASR) and Alexander Punnoose (IISc) |
cond-mat/9506110 | Charge-Spin Separation in 2D Fermi Systems: Singular Interactions as
Modified Commutators, and Solution of 2D Hubbard Model in Bosonized
Approximation | The general 2-dimensional fermion system with repulsive interactions
(typified by the Hubbard Model) is bosonized, taking into account the finite
on-shell forward scattering phase shift derived in earlier papers. By taking
this phase shift into account in the bosonic commutation relations a consistent
picture emerges s... | 1995-06-23 | 2009-10-28 | [
"cond-mat"
] | P. W. Anderson and D. Khveshchenko |
cond-mat/9506105 | Spectral Correlation and Response functions in Quantum Dots | We derive a general relation between correlators of density of states
fluctuations and density response functions. It applies equally to quantum
chaotic systems of pure symmetry (unitary, orthogonal, and symplectic) as well
as to the crossover region between the universality classes. This relation is
much more robust t... | 1995-06-23 | 2009-10-28 | [
"cond-mat"
] | N. Taniguchi, B. D. Simons and B. L. Altshuler (MIT, Imperial College,
and NECI) |
cond-mat/9506108 | Series Expansion of the Off-Equilibrium Mode Coupling Equations | We show that computing the coefficients of the Taylor expansion of the
solution of the off-equilibrium dynamical equations characterizing models with
quenched disorder is a very effective way to understand the long time
asymptotic behavior. We study the $p=3$ spherical spin glass model, and we
compute the asymptotic en... | 1995-06-23 | 2009-10-28 | [
"cond-mat"
] | S.Franz, E.Marinari and G.Parisi |
cond-mat/9506107 | Three-Dimensional Effects on the Electronic Structure of Quasiperiodic
Systems | We report on a theoreticl study of the electronic structure of quasiperiodic,
quasi-one-dimensional systems where fully three dimensional interaction
potentials are taken into account. In our approach, the actual physical
potential acting upon the electrons is replaced by a set of nonlocal separable
potentials, leading... | 1995-06-23 | 2009-10-28 | [
"cond-mat"
] | E. Macia and F. Dominguez-Adame (U. Complutense, Madrid) |
cond-mat/9506109 | Path integrals for spinning particles, stationary phase and the
Duistermaat-Heckman theorem | We examine the problem of the evaluation of both the propagator and of the
partition function of a spinning particle in an external field at the classical
as well as the quantum level, in connection with the asserted exactness of the
saddle point approximation (SPA) for this problem. At the classical level we
argue tha... | 1995-06-23 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | E.Ercolessi, G.Morandi, F.Napoli and P.Pieri |
cond-mat/9506111 | Avalanches, Barkhausen Noise, and Plain Old Criticality | We explain Barkhausen noise in magnetic systems in terms of avalanches near a
plain old critical point in the hysteretic zero-temperature random-field Ising
model. The avalanche size distribution has a universal scaling function, making
non-trivial predictions of the shape of the distribution up to 50\% above the
criti... | 1995-06-23 | 2009-10-28 | [
"cond-mat"
] | Olga Perkovi\'c, Karin Dahmen, and James P. Sethna (Laboratory of
Atomic and Solid State Physics, Cornell University, Ithaca, NY) |
cond-mat/9506112 | $E_{1g}$ model of superconducting UPt$_3$ | The phase diagram of superconducting UPt$_3$ is explained in a
Ginzburg-Landau theory starting from the hypothesis that the order parameter is
a pseudo-spin singlet which transforms according to the $E_{1g}$ representation
of the $D_{6h}$ point group. We show how to compute the positions of the phase
boundaries both wh... | 1995-06-23 | 2009-10-28 | [
"cond-mat"
] | K. A. Park and Robert Joynt (University of Wisconsin-Madison) |
cond-mat/9506100 | Critical Behavior of Hierarchical Ising Models | We consider the critical behavior of two-dimensional layered Ising models
where the exchange couplings between neighboring layers follow hierarchical
sequences. The perturbation caused by the non-periodicity could be irrelevant,
relevant or marginal. For marginal sequences we have performed a detailed
study, which invo... | 1995-06-22 | 2009-10-28 | [
"cond-mat"
] | Ferenc Igloi, Peter Lajko and Ferenc Szalma |
cond-mat/9506118 | Weak-Coupling Approach to Hole-Doped S=1 Haldane Systems | As a weak-coupling analogue of hole-doped $S=1$ Haldane systems, we study two
models for coupled chains via Hund coupling; coupled Hubbard chains, and a
Hubbard chain coupled with an $S=1/2$ Heisenberg chain. The fixed point
properties of these models are investigated by using bosonization and
renormalization group met... | 1995-06-22 | 2009-10-28 | [
"cond-mat"
] | S. Fujimoto and N. Kawakami |
cond-mat/9506103 | Photoassisted sequential resonant tunneling through superlattices | We have analyzed theoretically the photoassisted tunneling current through a
superlattice in the presence of an AC potential. For that purpose we have
developed a new model to calculate the sequential resonant currrent trhough a
superlattice based in the TRansfer Hamiltonian Method. The tunneling current
presents new f... | 1995-06-22 | 2009-10-28 | [
"cond-mat"
] | Jesus Inarrea and Gloria Platero (Instituto de Ciencia de Materiales
(CSIC) and Departamento de Fisica de la Materia Condensada C-III, Universidad
Autonoma de Madrid, Cantoblanco, Madrid, Spain) |
cond-mat/9506097 | A Scaling Theory of Bifurcations in the Symmetric Weak-Noise Escape
Problem | We consider the overdamped limit of two-dimensional double well systems
perturbed by weak noise. In the weak noise limit the most probable
fluctuational path leading from either point attractor to the separatrix (the
most probable escape path, or MPEP) must terminate on the saddle between the
two wells. However, as the... | 1995-06-22 | 2009-10-28 | [
"cond-mat",
"adap-org",
"nlin.AO"
] | Robert S. Maier and Daniel L. Stein (University of Arizona) |
cond-mat/9506098 | Interacting Electrons and Localized Spins: Exact Results from Conformal
Field Theory | We give a brief review of the Kondo effect in a one-dimensional interacting
electron system, and present exact results for the impurity thermodynamic
response based on conformal field theory. | 1995-06-22 | 2015-06-25 | [
"cond-mat"
] | Per Frojdh (Univ of Wash, Seattle) and Henrik Johannesson (Chalmers
Univ of Technology and Goteborg Univ, Sweden) |
cond-mat/9506099 | Magnetic Impurity in a Luttinger Liquid: A Conformal Field Theory
Approach | We study the low-temperature properties of a spin-\onehalf\ magnetic impurity
coupled to a one-dimensional interacting electron system. Using the newly
developed formalism by Affleck and Ludwig, with a scale invariant boundary
condition replacing the impurity, we exploit boundary conformal field theory to
deduce the im... | 1995-06-22 | 2009-10-28 | [
"cond-mat"
] | Per Frojdh (Univ of Wash, Seattle) and Henrik Johannesson (Chalmers
Univ of Technology and Goteborg Univ, Sweden) |
cond-mat/9506104 | Exact perturbative solution of the Kondo problem | We explicitly evaluate the infinite series of integrals that appears in the
"Anderson-Yuval" reformulation of the anisotropic Kondo problem in terms of a
one-dimensional Coulomb gas. We do this by developing a general approach
relating the anisotropic Kondo problem of arbitrary spin with the boundary
sine-Gordon model,... | 1995-06-22 | 2009-10-28 | [
"cond-mat",
"hep-th",
"math.QA",
"q-alg"
] | P. Fendley and H. Saleur |
cond-mat/9506101 | Lack of Self-Averaging in Critical Disordered Systems | We consider the sample to sample fluctuations that occur in the value of a
thermodynamic quantity $P$ in an ensemble of finite systems with quenched
disorder, at equilibrium. The variance of $P$, $V_{P}$, which characterizes
these fluctuations is calculated as a function of the systems' linear size $l$,
focusing on the... | 1995-06-22 | 2016-08-31 | [
"cond-mat"
] | S. Wiseman, and E. Domany |
cond-mat/9506102 | On the Superconductivity of 2D System with Arbitrary Carrier Density in
External Magnetic Field | Selfconsistent equations which describe the order parameter and chemical
potential behaviour in $2D$ metalic system as functions of external magnetic
field, $H$, temperature, $T$, and carrier density, $n$, are obtained. It is
shown that for the case of the local pairs (low carrier density and negative
chemical potentia... | 1995-06-22 | 2019-08-15 | [
"cond-mat"
] | V.P. Gusynin, V.M. Loktev and I.A. Shovkovy |
cond-mat/9506093 | Effective Action in Theory of Quasi-Ballistic Disordered Conductors | We suggest an effective field theory for disorderd conductors, which
describes quantum kinetics of ballistically propagating electrons. This theory
contains non-linear $\sigma$-model \cite{Efetov} as its long wave limit. | 1995-06-21 | 2007-05-23 | [
"cond-mat"
] | B.A.Muzykantskii and D.E.Khmelnitskii |
cond-mat/9506092 | Numerical Renormalization-Group Study of Particle-Hole Symmetry Breaking
in Two-Channel Kondo Problem : Effect of Repulsion between Conduction
Electrons and Potential Scattering | Particle-hole symmetry breaking perturbation in two-channel pseudospin Kondo
problem is studied by the numerical renormalization-group method. It is shown
that the repulsion between conduction electrons at the impurity site and the
single particle potential are the relevant perturbations against the
conventional non-Fe... | 1995-06-21 | 2009-10-28 | [
"cond-mat"
] | H. Kusunose, K. Miyake, Y. Shimizu, and O. Sakai (Osaka University,
Tohoku University, Japan) |
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