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/9402099 | Period Doubling in Four-Dimensional Volume-Preserving Maps | We numerically study the scaling behavior of period doublings at the
zero-coupling critical point in a four-dimensional volume-preserving map
consisting of two coupled area-preserving maps. In order to see the fine
structure of period doublings, we extend the simple one-term scaling law to a
two-term scaling law. Thus ... | 1994-02-23 | 2007-05-23 | [
"cond-mat"
] | Sang-Yoon Kim |
cond-mat/9402100 | Critical Exponents of the Fully Frustrated 2-D Xy Model | We present a detailed study of the critical properties of the 2-D XY model
with maximal frustration in a square lattice. We use extensive Monte Carlo
simulations to study the thermodynamics of the spin and chiral degrees of
freedom, concentrating on their correlation functions. The gauge invariant
spin-spin correlation... | 1994-02-23 | 2009-10-22 | [
"cond-mat"
] | G. Ramirez-Santiago, and Jorge V. Jos\'e |
cond-mat/9402093 | Relation between Energy Level Statistics and Phase Transition and its
Application to the Anderson Model | A general method to describe a second-order phase transition is discussed. It
starts from the energy level statistics and uses of finite-size scaling. It is
applied to the metal-insulator transition (MIT) in the Anderson model of
localization, evaluating the cumulative level-spacing distribution as well as
the Dyson-Me... | 1994-02-22 | 2009-10-22 | [
"cond-mat"
] | E. Hofstetter and M. Schreiber |
cond-mat/9402095 | Dynamics of a hole in the large--U Hubbard model: a Feynman diagram
approach | We study the dynamics of a single hole in an otherwise half--filled
two--dimensional Hubbard model by introducing a nonlocal Bogolyubov
transformation in the antiferromagnetic state. This allows us to rewrite the
Hamiltonian in a form that makes a separation between high--energy processes
(involving double--occupancy) ... | 1994-02-22 | 2009-10-22 | [
"cond-mat"
] | C. Zhou, H. J. Schulz |
cond-mat/9402088 | Real-space approach to calculation of electric polarization and
dielectric constants | We describe a real-space approach to the calculation of the properties of an
insulating crystal in an applied electric field, based on the iterative
determination of the Wannier functions (WF's) of the occupied bands. It has
been recently shown that a knowledge of the occupied WF's allows the
calculation of the spontan... | 1994-02-22 | 2009-10-22 | [
"cond-mat"
] | R. W. Nunes and David Vanderbilt |
cond-mat/9402089 | Response Function of the Fractional Quantized Hall State on a Sphere I:
Fermion Chern-Simons Theory | Using a well known singular gauge transformation, certain fractional
quantized Hall states can be modeled as integer quantized Hall states of
transformed fermions interacting with a Chern-Simons field. In previous work we
have calculated the electromagnetic response function of these states at
arbitrary frequency and w... | 1994-02-22 | 2009-10-22 | [
"cond-mat"
] | Steven H. Simon and Bertrand I. Halperin |
cond-mat/9402091 | Transition to Chaos in a Shell Model of Turbulence | We study a shell model for the energy cascade in three dimensional turbulence
at varying the coefficients of the non-linear terms in such a way that the
fundamental symmetries of Navier-Stokes are conserved. When a control parameter
$\epsilon$ related to the strength of backward energy transfer is enough small,
the dyn... | 1994-02-22 | 2008-02-03 | [
"cond-mat"
] | L. Biferale, A. Lambert, R. Lima and G. Paladin |
cond-mat/9402096 | Response Functions Improving Performance in Analog Attractor Neural
Networks | In the context of attractor neural networks, we study how the equilibrium
analog neural activities, reached by the network dynamics during memory
retrieval, may improve storage performance by reducing the interferences
between the recalled pattern and the other stored ones. We determine a simple
dynamics that stabilize... | 1994-02-22 | 2009-10-22 | [
"cond-mat",
"q-bio"
] | Nicolas Brunel and Riccardo Zecchina |
cond-mat/9402092 | Monte Carlo Study of the Inflation-Deflation Transition in a Fluid
Membrane | We study the conformation and scaling properties of a self-avoiding fluid
membrane, subject to an osmotic pressure $p$, by means of Monte Carlo
simulations. Using finite size scaling methods in combination with a histogram
reweighting techniques we find that the surface undergoes an abrupt
conformational transition at ... | 1994-02-22 | 2009-10-22 | [
"cond-mat"
] | B. Dammann, H.C. Fogedby, J.H. Ipsen, and C. Jeppesen |
cond-mat/9402090 | Response Function of the Fractional Quantized Hall State on a Sphere II:
Exact Diagonalization | We study the excitation spectra and the dynamical structure factor of quantum
Hall states in a finite size system through exact diagonalization. Comparison
is made between the numerical results so obtained and the analytic results
obtained from a modified RPA in the preceding companion paper. We find good
agreement bet... | 1994-02-22 | 2009-10-22 | [
"cond-mat"
] | Song He, Steven H. Simon, and Bertrand I. Halperin |
cond-mat/9402094 | Weak Lensing By Nearby Structures | Weak gravitational lensing due to nearby structures, such as the Coma
cluster, and the Local Supercluster can be expected to polarize images of
distant galaxies by ${\cal O}(0.2%\Omega)$ with coherence over scales of tens
of square degrees. The Sloan Survey, which will image $\gsim 10^4$ galaxies
$\rm deg^{-2}$ over $\... | 1994-02-22 | 2009-10-22 | [
"cond-mat"
] | Andrew Gould and Jens Villumsen |
cond-mat/9402097 | Systematic 1/S study of the 2D Hubbard model at half-filling | The 2D Hubbard model is extended by placing 2S orbitals at each lattice site
and studied in a systematic 1/S expansion. The 1/S results for the magnetic
susceptibility and the spectra of spin-wave excitations at half-filling are
consistent with the large S calculations for the Heisenberg antiferromagnet.
The 1/S correc... | 1994-02-22 | 2009-10-22 | [
"cond-mat"
] | A.V.Chubukov and K.A.Musaelian |
cond-mat/9402084 | Functional integration method for 1D localization, multipoint
correlators and persistent current in mesoscopic ring at arbitrary magnetic
fields | Starting from the Abrikosov-Ryzhkin formulation of the 1D random potential
problem I find closed functional representations for various physical
quantities. These functional integrals are calculated exactly without the use
of any perturbative expansions. The expressions for the multipoint densities
correlators are obta... | 1994-02-21 | 2007-05-23 | [
"cond-mat"
] | I.V.Kolokolov Budker (Institute of Nuclear Physics, Novosibirsk
630090, Russia) |
cond-mat/9402087 | Kinks in the Presence of Rapidly Varying Perturbations | Dynamics of sine-Gordon kinks in the presence of rapidly varying periodic
perturbations of different physical origins is described analytically and
numerically. The analytical approach is based on asymptotic expansions, and it
allows to derive, in a rigorous way, an effective nonlinear equation for the
slowly varying f... | 1994-02-21 | 2009-10-22 | [
"cond-mat"
] | Yuri S. Kivshar, Niels Gr{\o}nbech-Jensen, and Robert D. Parmentier |
cond-mat/9402085 | Ursell operators in statistical physics I: generalizing the Beth
Uhlenbeck formula | Using Ursell operators for the study of the poperties of dilute degenerate
gases | 1994-02-21 | 2007-05-23 | [
"cond-mat"
] | F. Laloe |
cond-mat/9402086 | Bethe Ansatz and Quantum Davey-Stewartson 1 System with Multicomponent
in Two Dimensions | The quantum 2-component DS1 system was reduced to two 1D many-body problems
with $\delta-$function interactions, which were solved by Bethe ansatz. Using
the ansatz in ref.[1] and introducing symmetric and antisymmetric Young
operators of the permutation group, we obtain the exact solutions for the
system. | 1994-02-21 | 2007-05-23 | [
"cond-mat"
] | Yi Cheng, Mu-Lin Yan and Bao-Heng Zhao |
cond-mat/9402083 | On the parafermionic scattering of an integrable Heisenberg model with
impurity | We have studied the massive parafermionic sector of an integrable spin-$s$
chain with an impurity of spin-$s^{'}$ in presence of a magnetic field. The
effect of the impurity is encoded in a computable parafermionic impurity
scattering amplitude and its contribution to the finite size properties of the
free energy is di... | 1994-02-21 | 2009-10-22 | [
"cond-mat"
] | M.J.Martins |
cond-mat/9402077 | Ordinary, extraordinary, and normal surface transitions:
extraordinary-normal equivalence and simple explanation of
$|T-T_c|^{2-\alpha}$ singularities | With simple, exact arguments we show that the surface magnetization $m_1$ at
the extraordinary and normal transitions and the surface energy density
$\epsilon_1$ at the ordinary, extraordinary, and normal transitions of
semi-infinite $d$-dimensional Ising systems have leading thermal singularities
$B_\pm |t|^{2-\alpha}... | 1994-02-20 | 2009-10-22 | [
"cond-mat"
] | Theodore W. Burkhardt (Temple University) and H. W. Diehl (U. Essen) |
cond-mat/9402076 | A Growth Model for Dna Evolution (submitted to Nature) | We introduce a simple model for DNA evolution. Using the method of Peng et
al.$^1$, we investigate the fractal properties of the system. For small chains
and chains of intermediate size we find a fractal exponent that indicates the
existence of long-range correlations, as in real DNA sequences. However, when
very large... | 1994-02-19 | 2008-02-03 | [
"cond-mat",
"adap-org",
"chao-dyn",
"nlin.AO",
"nlin.CD",
"q-bio"
] | Maria de Sousa Vieira and Hans J. Herrmann |
cond-mat/9402075 | Low-Lying Excited States of Quantum Antiferromagnets on a Triangular
Lattice | We study low-lying states of the XY and Heisenberg antiferromagnets on a
triangular lattice to clarify whether spontaneous symmetry breaking occurs at
$T=0$ in the thermodynamic limit. Approximate forms of low-lying states are
proposed, in which degrees of freedom of the sublattice magnetization and of
the chirality ar... | 1994-02-18 | 2009-10-22 | [
"cond-mat"
] | Tsutomu Momoi |
cond-mat/9402074 | Renormalization Group Theory And Variational Calculations For
Propagating Fronts | We study the propagation of uniformly translating fronts into a linearly
unstable state, both analytically and numerically. We introduce a perturbative
renormalization group (RG) approach to compute the change in the propagation
speed when the fronts are perturbed by structural modification of their
governing equations... | 1994-02-18 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Lin-Yuan Chen, Nigel Goldenfeld and Y. Oono (Dept. of Physics,
University of Illinois at Urbana-Champaign) |
cond-mat/9402073 | Wetting on Lines and Lattices of Cylinders | This paper discusses wetting and capillary condensation transitions on a line
and a rectangular array of cylinders using an interface potential formalism.
For a line of cylinders, there is a capillary condensation transition followed
by complete wetting if the cylinders are sufficiently close together. Both
transitions... | 1994-02-18 | 2009-10-22 | [
"cond-mat"
] | W.R.Osborn and J.M.Yeomans |
cond-mat/9402069 | Hartree-Fock ground-state energy of anyons with no Coulomb interaction
in the zero effective field | We find, in the Hartree-Fock approximation, the ground-state energy of anyons
with no Coulomb interaction in the case when the external magnetic field
precisely cancels the average statistical field. From the point of view of the
fractional quantum Hall effect statistics transmutations to {\it superfermions}
at filling... | 1994-02-17 | 2009-10-22 | [
"cond-mat"
] | P. Sitko |
cond-mat/9402067 | Roughening of the Cu(110) Surface | The structure of the Cu(110) surface is studied at high temperatures using a
combination of lattice-gas Monte Carlo and molecular dynamics methods with
identical many-atom interactions derived from the effective medium theory. The
anisotropic six-vertex model is used in the interpretation of the lattice-gas
results. We... | 1994-02-17 | 2009-10-22 | [
"cond-mat"
] | J.Merikoski, H.Hakkinen, M.Manninen, J.Timonen and K.Kaski |
cond-mat/9402066 | A fast algorithm for random sequential adsorption of discs | An efficient algorithm for random sequential adsorption of hard discs in two
dimensions is implemented. A precise value for the coverage is obtained:
theta(infty) = 0.547069. The asymptotic law theta(t) = theta(infty) - ct^{-1/2}
is verified to a high accuracy. Pair correlation function is analyzed. | 1994-02-17 | 2015-06-25 | [
"cond-mat",
"hep-lat"
] | Jian-Sheng WANG |
cond-mat/9402071 | Localization and dynamic persistent currents in long cylinders | A dynamic response to a magnetic field in a long disordered cylinder is
considered. We show that, although at high frequencies conduction is classical
in all directions, the low frequency behavior corresponds to localization in
the longitudinal direction and to a diamagnetic dynamic persistent current in
the transversa... | 1994-02-17 | 2007-05-23 | [
"cond-mat"
] | Stefan Kettemann, Konstantin B. Efetov |
cond-mat/9402072 | Exact Derivation of Luttinger Liquid Relation in a One-Dimensional
Two-Component Quantum System with Hyperbolic Interactions | We present an exact calculation of the Luttinger liquid relation for the
one-dimensional, two-component SC model in the interaction strength range
$-1<s<0$ by appropriately varying the limits of the integral Bethe Ansatz
equations. The result is confirmed by numerical and conformal methods. By a
related study of the tr... | 1994-02-17 | 2016-08-14 | [
"cond-mat"
] | Rudolf A. R\"omer and Bill Sutherland |
cond-mat/9402070 | Collective excitations in double-layer quantum Hall systems | We study the collective excitation spectra of double-layer quantum-Hall
systems using the single mode approximation. The double-layer in-phase density
excitations are similar to those of a single-layer system. For out-of-phase
density excitations, however, both inter-Landau-level and intra-Landau-level
double-layer mod... | 1994-02-17 | 2009-10-22 | [
"cond-mat"
] | A.H. MacDonald and Shou-Cheng Zhang |
cond-mat/9402068 | Universal order-parameter profiles for critical adsorption and the
extraordinary transition: a comparison of epsilon-expansion and Monte Carlo
results | The universal, scaled order parameter profiles $P_{\pm}(z/\xi)$ for critical
adsorption of a fluid or fluid mixture onto a wall or interface, and for the
extraordinary transition of the semi-infinite Ising model, are discussed
theoretically, where $z$ is the distance from the interface, $\xi (T)$ is the
bulk correlatio... | 1994-02-17 | 2007-05-23 | [
"cond-mat"
] | M.Smock (GHS-Essen), H.W.Diehl (GHS-Essen) and D.P.Landau (University
of Georgia) |
cond-mat/9402061 | Magnetic order and disorder in the frustrated quantum Heisenberg
antiferromagnet in two dimensions | We have performed a numerical investigation of the ground state properties of
the frustrated quantum Heisenberg antiferromagnet on the square lattice
(``$J_1-J_2$ model''), using exact diagonalization of finite clusters with 16,
20, 32, and 36 sites. Using a finite-size scaling analysis we obtain results
for a number o... | 1994-02-16 | 2009-10-22 | [
"cond-mat"
] | H. J. Schulz, T. A. L. Ziman, and D. Poilblanc |
cond-mat/9402065 | The $1/r^2$ Integrable system: The Universal Hamiltonian for Quantum Chaos | We summarize recent work showing that the $1/r^2$ model of interacting particles in 1-dimension is a universal Hamiltonian for quantum chaotic systems. The problem is analyzed in terms of random matrices and of the evolution of their eigenvalues under changes of parameters. The robustness of bulk space-time correlation... | 1994-02-16 | 2025-07-04 | [
"cond-mat",
"hep-th"
] | B. Sriram Shastry (AT\&T Bell Labs, Murray Hill, NJ) |
cond-mat/9402060 | The Heisenberg antiferromagnet on a triangular lattice: topological
excitations | We study the topological defects in the classical Heisenberg antiferromagnet
in two dimensions on a triangular lattice (HAFT). While the topological
analysis of the order parameter space indicates that the defects are of $Z_2$
type, consideration of the energy leads us to a description of the low--energy
stationary poi... | 1994-02-16 | 2009-10-22 | [
"cond-mat"
] | M. Wintel, H. U. Everts and W. Apel |
cond-mat/9402062 | Statistics of a Passive Scalar Advected by a Large-Scale 2D Velocity
Field: Analytic Solution | Steady statistics of a passive scalar advected by a random two-dimensional
flow of an incompressible fluid is described in the range of scales between the
correlation length of the flow and the diffusion scale. That corresponds to the
so-called Batchelor regime where the velocity is replaced by its large-scale
gradient... | 1994-02-16 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | M. Chertkov, G. Falkovich, I. Kolokolov and V. Lebedev |
cond-mat/9402063 | Passive scalar convection in 2D long-range delta-correlated velocity
field: Exact results | The letter presents new field-theoretical approach to 2D passive scalar
problem. The Gaussian form of the distribution for the Lyapunov exponent is
derived and its parameters are found explicitly. | 1994-02-16 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | M. Chertkov, Y.V. Fyodorov and I. Kolokolov |
cond-mat/9402064 | Superhexatics | We develop a theory for a novel state of ${}^4$He films, that possesses off
diagonal order (as in the superfluid state), as well as hexatic or bond
orientational order. Within our description, both the hexatic and superfluid
transitions are still of the Kosterlitz-Thouless type, but the superfluid
stiffness is sensitiv... | 1994-02-16 | 2007-05-23 | [
"cond-mat"
] | Kieran Mullen, H.T.C. Stoof, Mats Wallin, and S.M. Girvin |
cond-mat/9402057 | Mode-Locking Hysteresis in the Globally Coupled Model of Charge-Density
Waves | We study the response of a recently proposed global coupling model of
charge-density waves to a joint ac+dc drive. The model is the standard
Fukuyama-Lee-Rice model with an additional global coupling term to account for
interaction with (uncondensed) quasi-particles. We find that traditional
mode-locking is accompanied... | 1994-02-15 | 2009-10-22 | [
"cond-mat"
] | Afshin Montakhab, J.M. Carlson, and Jeremy Levy |
cond-mat/9402058 | Entropy of Folding of the Triangular Lattice | The problem of counting the different ways of folding the planar triangular
lattice is shown to be equivalent to that of counting the possible 3-colorings
of its bonds, a dual version of the 3-coloring problem of the hexagonal lattice
solved by Baxter. The folding entropy Log q per triangle is thus given by
Baxter's fo... | 1994-02-15 | 2015-06-25 | [
"cond-mat",
"hep-th"
] | P. Di Francesco and E. Guitter |
cond-mat/9402059 | A Landau Theory for the Metal-Insulator Transition | The nonlinear $\sigma$-model for disordered interacting electrons is studied
in spatial dimensions $d>4$. The critical behavior at the metal-insulator
transition is determined exactly, and found to be that of a standard
Landau-Ginzburg-Wilson $\phi^4$-theory with the single-particle density of
states as the order param... | 1994-02-15 | 2009-10-22 | [
"cond-mat"
] | T.R.Kirkpatrick and D.Belitz |
cond-mat/9402056 | The Metal-Insulator Transition in the Hubbard Model at Zero Temperature
II | We study the metal-to-insulator transition of the Hubbard model at zero
temperatures in infinite dimensions. The coexistence of metallic and insulating
solutions for a finite range of the interaction is established. It is shown
that the metallic solution is lower in energy for any interaction in the
coexistence region ... | 1994-02-14 | 2015-06-25 | [
"cond-mat"
] | Marcelo J. Rozenberg, Goetz Moeller, Gabriel Kotliar |
cond-mat/9402055 | Fluctuations of the Instantaneous Space Averages in Fragmentation with
Kolmogorov Time Scales | We investigate the time behavior of the fragmentation model with Kolmogorov
time scales and space contraction resembling the random $\beta$-model of
turbulence. The space averages computed at any instant using the entire spatial
realization of the velocity field are shown to fluctuate strongly in time, and
in this sens... | 1994-02-14 | 2007-05-23 | [
"cond-mat"
] | Sergei E. Esipov |
cond-mat/9402054 | Kinetics of Clustering in Traffic Flows | We study a simple aggregation model that mimics the clustering of traffic on
a one-lane roadway. In this model, each ``car'' moves ballistically at its
initial velocity until it overtakes the preceding car or cluster. After this
encounter, the incident car assumes the velocity of the cluster which it has
just joined. T... | 1994-02-14 | 2009-10-22 | [
"cond-mat"
] | E. Ben-Naim, P.L. Krapivsky and S. Redner |
cond-mat/9402052 | Dynamic Renormalization Group Study of the $\phi^4$ Model with Colored
Noise | The non-conserved $\phi^4$ model defined by a Langevin equation with external
non-white noise is studied by means of the Dynamic Renormalization Group. The
correlation time of the noise changes the critical point location but does not
affect the critical exponents up to order $\varepsilon^2$. The same effect is
obtaine... | 1994-02-11 | 2007-05-23 | [
"cond-mat"
] | J. Garcia-Ojalvo, J.M. Sancho and H. Guo |
cond-mat/9402051 | Flat quasiparticle dispersion and a hidden small energy scale in the 2D
t-J model | A model of weakly interacting hole quasiparticles is proposed to describe the
normal state of the high temperature superconductors. The effect of strong
correlations is contained in the dispersion relation of the holes, which is
obtained accurately using a numerical technique and the t-J model on $12\times
12$ clusters... | 1994-02-11 | 2007-05-23 | [
"cond-mat"
] | Elbio Dagotto, Alexander Nazarenko and Massimo Boninsegni |
cond-mat/9402050 | Macroscopic Quantum Tunneling of a Domain Wall in a Ferromagnetic Metal | The macroscopic quantum tunneling of a planar domain wall in a ferromagnetic
metal is studied by use of an instanton method. Based on the Hubbard model, the
effective action of the magnetization is derived within the assumption of slow
dependences on space and time. The resulting action is formally similar to that
of a... | 1994-02-11 | 2009-10-22 | [
"cond-mat"
] | Gen Tatara and Hidetoshi Fukuyama |
cond-mat/9402053 | The Influence of Magnetic Imperfections on the Low Temperature
Properties of D-wave Superconductors | We consider the influence of planar ``magnetic" imperfections which destroy
the local magnetic order, such as Zn impurities or $Cu^{2+}$ vacancies, on the
low temperature properties of the cuprate superconductors. In the unitary
limit, at low temperatures, for a $d_{x^2-y^2}$ pairing state such
imperfections produce lo... | 1994-02-11 | 2009-10-22 | [
"cond-mat"
] | A. V. Balatsky, P. Monthoux and D. Pines |
cond-mat/9402047 | Critical Properties of the Mott Transition in the Hubbard Model | We introduce a systematic low-energy approach to strongly correlated electron
systems in infinite dimensions, and apply it to the problem of the
correlation-induced metal-insulator transition in the half-filled Hubbard
model. We determine the low-energy scaling functions of the metallic state,
including the single-part... | 1994-02-10 | 2007-05-23 | [
"cond-mat"
] | Goetz Moeller, Qimiao Si, Gabriel Kotliar and Marcelo Rozenberg |
cond-mat/9402049 | Simulated-tempering approach to spin-glass simulations | After developing an appropriate iteration procedure for the determination of
the parameters, the method of simulated tempering has been successfully applied
to the 2D Ising spin glass. The reduction of the slowing down is comparable to
that of the multicanonical algorithm. Simulated tempering has, however, the
advantag... | 1994-02-10 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | Werner Kerler and Peter Rehberg |
cond-mat/9402046 | Tetracritical behaviour in a spin-3/2 quantum chain | Finite-Size-Scaling and Conformal Invariance are used in order to find the
phase diagram and critical exponents of a quantum spin chain with spin $S=3/2$.
The model has a tetracritical point besides critical lines. The conformal
anomaly and anomalous dimensions of some primary operators are calculated at
the tetracriti... | 1994-02-10 | 2007-05-23 | [
"cond-mat"
] | A. Malvezzi |
cond-mat/9402048 | Corrections to Scaling in the Integer Quantum Hall Effect | Finite size corrections to scaling laws in the centers of Landau levels are
studied systematically by numerical calculations. The corrections can account
for the apparent non-universality of the localization length exponent $\nu{}$.
In the second lowest Landau level the irrelevant scaling index is
$y_{\mathrm{irr}}=-0.... | 1994-02-10 | 2009-10-22 | [
"cond-mat"
] | Bodo Huckestein |
cond-mat/9402045 | Monte Carlo Calculations for Liquid $^4$He at Negative Pressure | A Quadratic Diffusion Monte Carlo method has been used to obtain the equation
of state of liquid $^4$He including the negative pressure region down to the
spinodal point. The atomic interaction used is a renewed version (HFD-B(HE)) of
the Aziz potential, which reproduces quite accurately the features of the
experimenta... | 1994-02-10 | 2009-10-22 | [
"cond-mat"
] | J. Boronat, J. Casulleras (Universitat Politecnica de Catalunya), and
J. Navarro (Universitat de Valencia) |
cond-mat/9402042 | Langevin equations for continuous time L\'{e}vy flights | We consider the combined effects of a power law L\'{e}vy step distribution
characterized by the step index $f$ and a power law waiting time distribution
characterized by the time index $g$ on the long time behavior of a random
walker. The main point of our analysis is a formulation in terms of coupled
Langevin equation... | 1994-02-09 | 2009-10-22 | [
"cond-mat"
] | Hans C. Fogedby |
cond-mat/9402041 | Atomic Bose Gas with Negative Scattering Length | We derive the equation of state of a dilute atomic Bose gas with an
interatomic interaction that has a negative scattering length and argue that
two continuous phase transitions, occuring in the gas due to quantum degeneracy
effects, are preempted by a first-order gas-liquid or gas-solid transition
depending on the det... | 1994-02-09 | 2009-10-22 | [
"cond-mat"
] | H.T.C. Stoof |
cond-mat/9402044 | Spiral Magnets as Gapless Mott Insulators | In the large $U$ limit, the ground state of the half-filled, nearest-neighbor
Hubbard model on the triangular lattice is the three-sublattice
antiferromagnet. In sharp contrast with the square-lattice case, where
transverse spin-waves and charge excitations remain decoupled to all orders in
$t/U$, it is shown that beyo... | 1994-02-09 | 2009-10-22 | [
"cond-mat"
] | R. Cote, A.-M. S. Tremblay (Departement de physique, CRPS, Universite
de Sherbrooke) |
cond-mat/9402043 | Finite-lattice extrapolations for a Haldane gap antiferromagnet | We present results of exact diagonalizations of the isotropic
antiferromagnetic S=1 Heisenberg chain by the Lanczos method, for finite rings
of up to N=22 sites. The Haldane gap G(N) and the ground state energy per site
e(N) converge, with increasing N, faster than a power law. By VBS and Shanks
transformations, the ex... | 1994-02-09 | 2009-10-22 | [
"cond-mat"
] | O. Golinelli, Th. Jolicoeur and R. Lacaze |
cond-mat/9402036 | Long-time dynamics of the infinite-temperature Heisenberg magnet | Infinite-temperature long-time dynamics of Heisenberg model
${\bf\hat{H}}=-\frac{1}{2}\sum_{i,j}J_{ij} \hat{\vec{S}}_{i}\hat{\vec{S}}_{j}$
is investigated. It is shown that the quantum spin pair-correlator is equal to
the correlator of classically evaluated vector field averaged over the initial
conditions with respect... | 1994-02-08 | 2009-10-22 | [
"cond-mat"
] | Michael Chertkov and Igor Kolokolov |
cond-mat/9402040 | Luttinger States at the Edge | An effective wavefunction for the edge excitations in the Fractional quantum
Hall effect can be found by dimensionally reducing the bulk wavefunction.
Treated this way the Laughlin $\nu=1/(2n+1)$ wavefunction yields a Luttinger
model ground state. We identify the edge-electron field with a Luttinger
hyper-fermion opera... | 1994-02-08 | 2015-06-25 | [
"cond-mat"
] | M. Stone and M.P.A. Fisher |
cond-mat/9402037 | Method of effective potential for quantum Heisenberg ferromagnet theory | Self - consistent temperature dependence of the average magnetization in
quantum Heisenberg ferromagnet is obtained as a first approximation of
perturbation theory on an inverse radius by application of the functional
method for quantum ferromagnet. The experimental data are compared with the
theoretical results for {\... | 1994-02-08 | 2007-05-23 | [
"cond-mat"
] | E.V.Podivilov |
cond-mat/9402038 | Disordered Flat Phase in a Solid on Solid Model of Fcc(110) Surfaces and
Dimer States in Quantum Spin-1/2 Chains | We present a restricted solid on solid hamiltonian for fcc (110) surfaces. It
is the simplest generalization of the exactly solvable BCSOS model which is
able to describe a $(2\times 1)$ missing-row reconstructed surface. We study
this model by mapping it onto a quantum spin-1/2 chain of the Heisenberg type,
with secon... | 1994-02-08 | 2009-10-22 | [
"cond-mat"
] | Giuseppe Santoro and Michele Fabrizio |
cond-mat/9402035 | Equal Time Correlations in Haldane Gap Antiferromagnets | The $S=1$ antiferromagnetic Heisenberg chain both with and without single ion
anisotropy is studied. Using the recently proposed density matrix
renormalization group technique we calculate the energy gaps as well as several
different correlation functions. The two gaps, $\Delta_{||}, \Delta_\perp$,
along with associate... | 1994-02-08 | 2012-07-07 | [
"cond-mat"
] | E. Sorensen and I Affleck (UBC) |
cond-mat/9402039 | Exciton and lattice-fluctuation effects in optical spectra of C60 | A theory of optical excitations by using a tight binding model with
long-range Coulomb interactions is developed. The model is applied to a C60
molecule and a cluster, and is treated by the Hartree-Fock approximation
followed by a configuration interaction method. Lattice fluctuations are taken
into account by a bond d... | 1994-02-08 | 2008-02-03 | [
"cond-mat"
] | Kikuo Harigaya and Shuji Abe |
cond-mat/9402032 | Nonlinear Transport in a Quantum Point Contact due to Soft Disorder
Induced Coherent Mode Mixing | We show that the coherent mixing of different transverse modes, due to
forward scattering of carriers by soft impurity- or boundary potentials leads
to a nonlinear, asymmetric current response of quantum point contacts (QPC).
The oscillating contribution to the current is sensitive both to driving
voltage and to gate v... | 1994-02-07 | 2009-10-22 | [
"cond-mat"
] | A.M. Zagoskin and R.I. Shekhter |
cond-mat/9402030 | On generalized cluster algorithms for frustrated spin models | Standard Monte Carlo cluster algorithms have proven to be very effective for
many different spin models, however they fail for frustrated spin systems.
Recently a generalized cluster algorithm was introduced that works extremely
well for the fully frustrated Ising model on a square lattice, by placing bonds
between sit... | 1994-02-07 | 2009-10-22 | [
"cond-mat"
] | P.D. Coddington and L. Han |
cond-mat/9402034 | Raman Scattering and Anomalous Current Algebra: Observation of Chiral
Bound State in Mott Insulators | Recent experiments on inelastic light scattering in a number of insulating
cuprates [1] revealed a new excitation appearing in the case of crossed
polarizations just below the optical absorption threshold. This observation
suggests that there exists a local exciton-like state with an odd parity with
respect to a spatia... | 1994-02-07 | 2009-10-22 | [
"cond-mat"
] | D.V.Khveshchenko and P.B.Wiegmann |
cond-mat/9402031 | Spectroscopy of the Potential Profile in a Ballistic Quantum
Constriction | We present a theory for the nonlinear current-voltage characteristics of a
ballistic quantum constriction. Nonlinear features first develop because of
above-barrier reflection from the potential profile, created by impurities in
the vicinity of the constriction. The nonlinearity appears on a small voltage
scale and mak... | 1994-02-07 | 2009-10-22 | [
"cond-mat"
] | I. E. Aronov, M. Jonson, and A. M. Zagoskin |
cond-mat/9402033 | Observation and Assignment of Silent and Higher Order Vibrations in the
Infrared Transmission of C60 Crystals | We report the measurement of infrared transmission of large C60 single
crystals. The spectra exhibit a very rich structure with over 180 vibrational
absorptions visible in the 100 - 4000 cm-1 range. Many silent modes are
observed to have become weakly IR-active. We also observe a large number of
higher order combinatio... | 1994-02-07 | 2009-10-22 | [
"cond-mat"
] | Michael C. Martin, Xiaoqun Du, John Kwon, and L. Mihaly (Department of
Physics, SUNY at Stony Brook.) |
cond-mat/9402029 | Conserving approximations for the attractive Holstein and Hubbard models | Conserving approximations are applied to the attractive Holstein and Hubbard
models (on an infinite-dimensional hypercubic lattice). All effects of
nonconstant density of states and vertex corrections are taken into account in
the weak-coupling regime. Infinite summation of certain classes of diagrams
turns out to be a... | 1994-02-06 | 2009-10-22 | [
"cond-mat"
] | J. K. Freericks |
cond-mat/9402026 | Universal Spectral Correlations at the Mobility Edge | We demonstrate the level statistics in the vicinity of the Anderson
transition in $d>2$ dimensions to be universal and drastically different from
both Wigner-Dyson in the metallic regime and Poisson in the insulator regime.
The variance of the number of levels $N$ in a given energy interval with
$\langle N\rangle\gg1$ ... | 1994-02-05 | 2009-10-22 | [
"cond-mat"
] | V. E. Kravtsov, I. V. Lerner, B. L. Altshuler, A. G. Aronov |
cond-mat/9402027 | The Level Spacing Distribution Near the Anderson Transition | For a disordered system near the Anderson transition we show that the
nearest-level-spacing distribution has the asymptotics $P(s)\propto \exp(-A
s^{2-\gamma })$ for $s\gg \av{s}\equiv 1$ which is universal and intermediate
between the Gaussian asymptotics in a metal and the Poisson in an insulator.
(Here the critical ... | 1994-02-05 | 2007-05-23 | [
"cond-mat"
] | A. G. Aronov, V. E. Kravtsov, I. V. Lerner |
cond-mat/9402028 | Distributions of the Diffusion Coefficient for the Quantum and Classical
Diffusion in Disordered Media | It is shown that the distribution functions of the diffusion coefficient are
very similar in the standard model of quantum diffusion in a disordered metal
and in a model of classical diffusion in a disordered medium: in both cases the
distribution functions have lognormal tails, their part increasing with the
increase ... | 1994-02-05 | 2007-05-23 | [
"cond-mat"
] | I.V. Lerner |
cond-mat/9402022 | Density nonlinearities and a field theory for the dynamics of simple
fluids | We study the role of the Jacobian arising from a constraint enforcing the
nonlinear relation: ${\bf g}=\rho{\bf V}$, where $\rho,\: {\bf g}$ and ${\bf
V}$ are the mass density, the momentum density and the local velocity field,
respectively, in the field theoretic formulation of the nonlinear fluctuating
hydrodynamics ... | 1994-02-04 | 2009-10-22 | [
"cond-mat"
] | Gene F. Mazenko and Joonhyun Yeo |
cond-mat/9402025 | Sideways Tunnelling and Fractional Josephson Frequency in Double Layered
Quantum Hall Systems | The $(kkk)$ double layered quantum Hall state has been shown to exhibit many
superfluid properties including the appearance of an alternating tunnelling
current in response to an external voltage V. Here we propose the notion of
"sideways tunnelling", in which a current tunnels between two such $(kkk)$
states through a... | 1994-02-04 | 2009-10-22 | [
"cond-mat"
] | X.G. Wen and A. Zee |
cond-mat/9402016 | Superconductivity in High Magnetic Field:Excitation Spectrum and
Tunneling Properties | The quasiparticle excitation spectrum of a type-II superconductor placed in
high magnetic field is shown to be gapless. The gap turns to zero at the points
in the MBZ which are in correspondence with the vortex lattice in real space.
When the field decreases below certain critical value, branch crossing occur
and gaps ... | 1994-02-04 | 2009-10-22 | [
"cond-mat"
] | S.Dukan and Z.Tesanovic |
cond-mat/9402018 | Finite-Size-Scaling Studies of Reaction-Diffusion Systems Part II: Open
Boundary Conditions | We consider the coagulation-decoagulation model on an one-dimensional lattice
of length $L$ with open boundary conditions. Based on the empty interval
approach the time evolution is described by a system of $\frac{L(L+1)}{2}$
differential equations which is solved analytically. An exact expression for
the concentration... | 1994-02-04 | 2007-05-23 | [
"cond-mat"
] | Haye Hinrichsen, Klaus Krebs, Markus Pfannmueller and Birgit Wehefritz |
cond-mat/9402017 | Finite-Size Scaling Studies of Reaction-Diffusion Systems, Part I:
Periodic Boundary Conditions | The finite-size scaling function and the leading corrections for the single
species 1D coagulation model $(A + A \rightarrow A)$ and the annihilation model
$(A + A \rightarrow \emptyset)$ are calculated. The scaling functions are
universal and independent of the initial conditions but do depend on the
boundary conditio... | 1994-02-04 | 2008-02-03 | [
"cond-mat"
] | Klaus Krebs, Markus Pfannmueller and Birgit Wehefritz |
cond-mat/9402023 | Metastability, Mode Coupling and the Glass Transition | Mode coupling theory (MCT) has been successful in explaining the observed
sequence of time relaxations in dense fluids. Previous expositions of this
theory showing this sequence have required the existence of an ideal glass
transition temperature $T_0$. Recent experiments show no evidence of $T_0$. We
show here how the... | 1994-02-04 | 2009-10-22 | [
"cond-mat"
] | Gene F. Mazenko and Joonhyun Yeo |
cond-mat/9402024 | Enhancement of Anisotropy due to Fluctuations in Quasi-One-Dimensional
Antiferromagnets | It is shown that the observed anisotropy of magnetization at high magnetic
fields in RbMnBr3 , a quasi-one-dimensional antiferromagnet on a distorted
stacked triangular lattice, is due to quantum and thermal fluctuations. These
fluctuations are taken into account in the framework of linear spin-wave theory
in the regio... | 1994-02-04 | 2009-10-22 | [
"cond-mat"
] | A.G.Abanov, O.A.Petrenko |
cond-mat/9402019 | Finite-Size Scaling Studies of Reaction-Diffusion Systems Part III:
Numerical Methods | The scaling exponent and scaling function for the 1D single species
coagulation model $(A+A\rightarrow A)$ are shown to be universal, i.e. they are
not influenced by the value of the coagulation rate. They are independent of
the initial conditions as well. Two different numerical methods are used to
compute the scaling... | 1994-02-04 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | Klaus Krebs, Markus Pfannmueller, Horatiu Simon and Birgit Wehefritz |
cond-mat/9402020 | Reaction-diffusion processes as physical realizations of Hecke algebras | The master equation describing non-equilibrium one-dimensional problems like
diffusion limited reactions can be written as a euclideen Schr\"odinger
equation in which the wave function is the probability distribution and the
Hamiltonian is that of a quantum chain with nearest-neighbour interactions.
Since many one-dime... | 1994-02-04 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | V. Rittenberg |
cond-mat/9402021 | Orientational Order and Depinning of the Disordered Electron Solid | We study the ground state of two-dimensional classical electron solids under
the influence of modulation-doped impurities by using a simulated annealing
molecular dynamics method. By changing the setback distance as a parameter, we
find that in the strong disorder limit the ground state configuration contains
both isol... | 1994-02-04 | 2009-10-22 | [
"cond-mat"
] | Min-Chul Cha and H. A. Fertig |
cond-mat/9402015 | Effects of Disorder in a Dilute Bose Gas | We discuss the effects of a weak random external potential on the properties
of the dilute Bose gas at zero temperature. The results recently obtained by
Huang and Meng for the depletion of the condensate and of the superfluid
density are recovered. Results for the shift of the velocity of sound as well
as for its damp... | 1994-02-04 | 2009-10-22 | [
"cond-mat"
] | S. Giorgini, L. Pitaevskii and S. Stringari |
cond-mat/9402012 | Eigenfunctions for SU(N) particles with 1/r^2 interaction in harmonic
confinement | We find a set of the exact eigenfunctions which provide the energy spectrum
for the quantum $N$-body Calogero-Sutherland model for fermions or bosons with
SU($\nu$) spin degrees of freedom moving in a harmonic confinement potential.
The eigenfunctions are explicitly constructed as a simple product of the
Jastrow wave f... | 1994-02-03 | 2009-10-22 | [
"cond-mat"
] | K.Vacek, A.Okiji, N.Kawakami |
cond-mat/9402011 | Critical Properties of Quantum Many-Body Systems with 1/r^2 Interaction | We review recent results obtained for a class of one-dimensional quantum
models with $1/r^2$ long-range interaction. Based on the asymptotic
Bethe-ansatz solution and conformal field theory, we study critical properties
of the continuum boson model, the SU($\nu$) spin chain, the OSp($\nu$,1)
supersymmetric {\it t-J} mo... | 1994-02-03 | 2017-02-01 | [
"cond-mat"
] | Norio Kawakami |
cond-mat/9402010 | Properties and Origins of Protein Secondary Structure | Proteins contain a large fraction of regular, repeating conformations, called
secondary structure. A simple, generic definition of secondary structure is
presented which consists of measuring local correlations along the protein
chain. Using this definition and a simple model for proteins, the forces
driving the format... | 1994-02-03 | 2009-10-22 | [
"cond-mat",
"q-bio.BM"
] | Nicholas D. Socci, William S. Bialek and Jose' Nelson Onuchic |
cond-mat/9402013 | Curie Temperatures for Three-Dimensional Binary Ising Ferromagnets | Using the Swendsen and Wang algorithm, high accuracy Monte Carlo simulations
were performed to study the concentration dependence of the Curie temperature
in binary, ferromagnetic Ising systems on the simple-cubic lattice. Our results
are in good agreement with known mean-field like approaches. Based on former
theoreti... | 1994-02-03 | 2009-10-22 | [
"cond-mat"
] | Zoltan NEDA |
cond-mat/9402009 | Exact Results for Spin and Charge Dynamics of Electrons with
Supersymmetry | Excitation spectra in the SU($\nu +1$,1) supersymmetric t-J model with
long-range exchange and transfer has quadratic dependence on spin and charge
currents for all energies. After brief review on the supersymmetry, this paper
gives a simple explanation for the spin-charge separation on the basis of a
first-quantized r... | 1994-02-03 | 2007-05-23 | [
"cond-mat"
] | Y. Kuramoto |
cond-mat/9402014 | Midinfrared Conductivity in Orientationally Disordered Doped Fullerides | The coupling between the intramolecular vibrational modes and the doped
conduction electrons in $M_3C_{60}$ is studied by a calculation of the
electronic contributions to the phonon self energies. The calculations are
carried out for an orientationally ordered reference solid with symmetry $Fm
\bar{3} m$ and for a mode... | 1994-02-03 | 2009-10-22 | [
"cond-mat"
] | M.S. Deshpande and E.J. Mele (Dept. of Physics, U. Pennsylvania,
Phila., PA) and M. J. Rice (Xerox Webster Research Center) and H-Y Choi (Sung
Kyun Kwan University) |
cond-mat/9402007 | Finite-range-scaling analysis of metastability in an Ising model with
long-range interactions | We apply both a scalar field theory and a recently developed transfer-matrix
method to study the stationary properties of metastability in a two-state model
with weak, long-range interactions: the $N$$\times$$\infty$
quasi-one-dimensional Ising model. Using the field theory, we find the analytic
continuation $\tilde f$... | 1994-02-02 | 2009-10-22 | [
"cond-mat"
] | Bryan M. Gorman, Per Arne Rikvold, and M. A. Novotny |
cond-mat/9402008 | Statistical Distribution of Particles obeying Fractional Statistics | Misprints in eq. (7), which propagate up to eq. (13), are corrected.
References are updated. | 1994-02-02 | 2008-02-03 | [
"cond-mat"
] | Yong-Shi Wu |
cond-mat/9402006 | Quantum Phase Transition in Frustrated Two-Dimensional Antiferromagnets | We study frustrated, two-dimensional, quantum antiferromagnets in the
vicinity of a quantum transition from a non-collinear, magnetically-ordered
ground state to a quantum disordered phase. The general scaling properties of
this transition are described. A detailed study of a particular field-theoretic
model of the tra... | 1994-02-02 | 2009-10-22 | [
"cond-mat"
] | Andrey V. Chubukov, Subir Sachdev, and T. Senthil |
cond-mat/9402003 | Non universal DLA and exact fractal dimensions | In analogy to recent results on non-universal roughening in surface growth
[Lam and Sander, Phys. Rev. Lett. {\bf 69}, 3338 (1992)], we propose a variant
of diffusion-limited aggregation ($DLA$) in which the radii of the particles
are chosen from a power law distribution. For very broad distributions, the
huge particle... | 1994-02-01 | 2007-05-23 | [
"cond-mat"
] | P. Ossadnik, C.-H. Lam, and L. M. Sander |
cond-mat/9402004 | Tight-Binding Parametrization of First-Principles Electronic Dispersion
in Orientationally Disordered A3c60 | We derive numerical tight-binding hopping parameters to describe
conduction-band dispersion in arbitrary orientational phases of $A_3$C$_{60}$.
The parameters are obtained by direct Fourier inversion of the spectra from
self-consistent electronic-structure calculations for K$_3$C$_{60}$ using the
local-density approxim... | 1994-02-01 | 2009-10-22 | [
"cond-mat"
] | S.C. Erwin and E.J. Mele |
cond-mat/9402002 | Block spins and Chirality in Heisenberg model on Kagome and triangular
lattices | The Spin-1/2 Heisenberg Model (HM) is investigated using a block-spin
renormalization approach on Kagome and triangular lattices. In both cases,
after coarse graining the triangles on original lattice and truncation of the
Hilbert space to the triangular ground state subspace, HM reduces to an
effective model on a tria... | 1994-02-01 | 2007-05-23 | [
"cond-mat"
] | V. Subrahmanyam (International Center for Theoretical Physics, P.O.
Box 586,34100 Trieste, Italy.) |
cond-mat/9402001 | The Chirality operators for Heisenberg Spin Systems | The ground state of closed Heisenberg spin chains with an odd number of sites
has a chiral degeneracy, in addition to a two-fold Kramers degeneracy. A
non-zero chirality implies that the spins are not coplanar, and is a measure of
handedness. The chirality operator, which can be treated as a spin-1/2
operator, is expli... | 1994-02-01 | 2009-10-22 | [
"cond-mat"
] | V. Subrahmanyam (International Center for Theoretical Physics, POBox
586, Trieste, Italy) |
cond-mat/9402005 | Electron Propagation in Orientationally Disordered Fullerides | We study the electronic spectrum for doped electronic states in the
orientationally disordered M3C60 fullerides. Momentum-resolved Green's
functions are calculated within a cluster-Bethe-lattice model, and compared
with results from calculations on periodically repeated supercells containing
quenched orientational diso... | 1994-02-01 | 2009-10-22 | [
"cond-mat"
] | E.J. Mele and S.C. Erwin |
cond-mat/9401073 | Comment on `Anomalously Large Gap Anisotropy in the a-b Plane of
Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$' | Comment on `Anomalously Large Gap Anisotropy in the a-b Plane of Bi$_{{\bf
2}}$Sr$_{{\bf 2}}$CaCu$_{{\bf 2}}$O$_{{\bf 8+}{\delta}}$', Kazumasa Miyake and
Osamu Narikiyo, In a recent Letter, Shen and collaborators [Phys. Rev. Lett.
{\bf 70}, 1555 (1993)] reported that angle-resolved photoemission spectra
(ARPES) in Bi-2... | 1994-01-31 | 2007-05-23 | [
"cond-mat"
] | Kazumasa Miyake and Osamu Narikiyo |
cond-mat/9401076 | Metastable lifetimes in a kinetic Ising model: Dependence on field and
system size | The lifetimes of metastable states in kinetic Ising ferromagnets are studied
by droplet theory and Monte Carlo simulation, in order to determine their
dependences on applied field and system size. For a wide range of fields, the
dominant field dependence is universal for local dynamics and has the form of
an exponentia... | 1994-01-31 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Per Arne Rikvold, H. Tomita, S. Miyashita, and Scott W. Sides |
cond-mat/9401075 | Crossover effects in the Wolf-Villain model of epitaxial growth in 1+1
and 2+1 dimensions | A simple model of epitaxial growth proposed by Wolf and Villain is
investigated using extensive computer simulations. We find an unexpectedly
complex crossover behavior of the original model in both 1+1 and 2+1
dimensions. A crossover from the effective growth exponent $\beta_{\rm
eff}\!\approx\!0.37$ to $\beta_{\rm ef... | 1994-01-31 | 2009-10-22 | [
"cond-mat"
] | Pavel \v{S}milauer and Miroslav Kotrla |
cond-mat/9401074 | The Free Energy and the Scaling Function of the Ferromagnetic Heisenberg
Chain in a Magnetic Field | A nonlinear susceptibilities (the third derivative of a magnetization $m_S$
by a magnetic field $h$ ) of the $S$=1/2 ferromagnetic Heisenberg chain and the
classical Heisenberg chain are calculated at low temperatures $T.$ In both
chains the nonlinear susceptibilities diverge as $T^{-6}$ and a linear
susceptibilities d... | 1994-01-31 | 2015-06-25 | [
"cond-mat"
] | H.Nakamure and M.Takahashi |
cond-mat/9401077 | Diffusion-limited aggregation as branched growth | I present a first-principles theory of diffusion-limited aggregation in two
dimensions. A renormalized mean-field approximation gives the form of the
unstable manifold for branch competition, following the method of Halsey and
Leibig [Phys. Rev. A {\bf 46}, 7793 (1992)]. This leads to a result for the
cluster dimension... | 1994-01-31 | 2009-10-22 | [
"cond-mat"
] | Thomas C. Halsey |
cond-mat/9401072 | Statistical Mechanics and Visual Signal Processing | The nervous system solves a wide variety of problems in signal processing. In
many cases the performance of the nervous system is so good that it apporaches
fundamental physical limits, such as the limits imposed by diffraction and
photon shot noise in vision. In this paper we show how to use the language of
statistica... | 1994-01-30 | 2009-10-22 | [
"cond-mat",
"q-bio"
] | Marc Potters and William Bialek |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.