id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
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cond-mat/9210001 | Universal criterion for the breakup of invariant tori in dissipative
systems | The transition from quasiperiodicity to chaos is studied in a two-dimensional
dissipative map with the inverse golden mean rotation number. On the basis of a
decimation scheme, it is argued that the (minimal) slope of the critical
iterated circle map is proportional to the effective Jacobian determinant.
Approaching th... | 1992-10-01 | 2009-10-22 | [
"cond-mat"
] | Jukka A. Ketoja |
cond-mat/9209034 | Temperature Correlations of Quantum Spins | We consider isotropic XY model in the transverse magnetic field on the one
dimensional lattice. Another name of the model in Heisenberg XXO model of spin
1/2.We solved long standing problem of evaluation of temperature correlations.
We first represent correlation function in the model, by means of completely
integrable... | 1992-09-30 | 2007-05-23 | [
"cond-mat"
] | Alexandr Its, Anatloij Izergin, Vladimr Korepin, Nikita Slavnov |
cond-mat/9209033 | Theory of adsorbate induced surface reconstruction on W(100) | We report results of a theoretical study on an adsorbate induced surface
reconstruction. Hydrogen adsorption on a W(100) surface causes a switching
transition in the symmetry of the displacements of the W atoms within the
ordered c(2x2) phase. This transition is modeled by an effective Hamiltonian,
where the hydrogen d... | 1992-09-28 | 2009-10-22 | [
"cond-mat"
] | Kari Kankaala, Tapio Ala-Nissila, See-Chen Ying |
cond-mat/9209032 | Surface reentrance in the semi-infinite spin-1 Ising models | The critical behavior of the semi-infinite Blume-Capel and
Blume-Emery-Griffiths models is investigated in the pair approximation of the
Cluster Variation Method. Equations for bulk and surface order parameters and
n.n. correlation functions are given, from which analytical expressions for the
second order bulk and sur... | 1992-09-28 | 2009-10-22 | [
"cond-mat"
] | Carla Buzano and Alessandro Pelizzola |
cond-mat/9209031 | Fluxes, Laplacians and Kasteleyn's Theorem | The following problem, which stems from the ``flux phase'' problem in
condensed matter physics, is analyzed and extended here: One is given a planar
graph (or lattice) with prescribed vertices, edges and a weight $\vert
t_{xy}\vert$ on each edge $(x,y)$. The flux phase problem (which we partially
solve) is to find the ... | 1992-09-25 | 2007-05-23 | [
"cond-mat"
] | Elliott Lieb and Michael Loss |
cond-mat/9209030 | An alternative approach for the dynamics of polarons in one dimension | We developed a new method based on functional integration to treat the
dynamics of polarons in one-dimensional systems. We treat the acoustical and
the optical case in an unified manner, showing their differences and
similarities. The mobility and diffusion coefficients are calculated in the
Markovian approximation in ... | 1992-09-23 | 2009-10-22 | [
"cond-mat"
] | A.H.Castro Neto and A.O.Caldeira |
cond-mat/9209029 | Polaron excitations in fullerenes: Theory as pi-conjugated systems | We review the recent theoretical treatment of fullerenes as pi-conjugated
systems. Polaronic properties due to the Jahn-Teller type effects are mainly
discussed. (1) A Su-Schrieffer-Heeger type electron-phonon model is applied to
fullerenes: C_60 and C_70, and is solved with the adiabatic approximation to
phonons. When... | 1992-09-20 | 2008-11-26 | [
"cond-mat"
] | Kikuo Harigaya, (Fundamental Physics Section, Physical Science
Division, Electrotechnical Laboratory, Umezono 1-1-4, Tsukuba, Ibaraki 305,
Japan) |
cond-mat/9209028 | Photoinduced charge separation in Q1D heterojunction materials: Evidence
for electron-hole pair separation in mixed-halide $MX$ solids | Resonance Raman experiments on doped and photoexcited single crystals of
mixed-halide $MX$ complexes ($M$=Pt; $X$=Cl,Br) clearly indicate charge
separation: electron polarons preferentially locate on PtBr segments while hole
polarons are trapped within PtCl segments. This polaron selectivity,
potentially very useful fo... | 1992-09-19 | 2009-10-22 | [
"cond-mat"
] | L.A. Worl, S.C. Huckett, B.I. Swanson, A. Saxena, A.R. Bishop, J.
Tinka Gammel |
cond-mat/9209027 | Electron-Phonon Driven Spin Frustration in Multi-Band Hubbard Models: MX
Chains and Oxide Superconductors | We discuss the consequences of both electron-phonon and electron-electron
couplings in 1D and 2D multi-band (Peierls-Hubbard) models. After briefly
discussing various analytic limits, we focus on (Hartree-Fock and exact)
numerical studies in the intermediate regime for both couplings, where unusual
spin-Peierls as well... | 1992-09-19 | 2007-05-23 | [
"cond-mat"
] | J. Tinka Gammel, K. Yonemitsu A. Saxena, A.R. Bishop, and H. R\"oder |
cond-mat/9209026 | Extracting Infinite System Properties from Finite Size Clusters: `Phase
Randomization/Boundary Condition Averaging' | When electron-electron correlations are important, it is often necessary to
use exact numerical methods, such as Lanczos diagonalization, to study the full
many-body Hamiltonian. Unfortunately, such exact diagonalization methods are
restricted to small system sizes. We show that if the Hubbard $U$ term is
replaced by a... | 1992-09-19 | 2012-08-27 | [
"cond-mat"
] | J. Tinka Gammel, D.K. Campbell, and E.Y. Loh, Jr |
cond-mat/9209025 | Relaxed Excited State Geometries in a Peierls-Hubbard Model for Polyenes | Using parameter values relevant to polyacetylene and its finite polyene
analogs, we determine, via exact finite size diagonalization of a 1D
Peierls-Hubbard model, the relaxed geometry and optical absorption spectra of
several states of interest in optical experiments (the singlet ($1^1A_g$) and
triplet ($1^3B_u$) grou... | 1992-09-18 | 2007-05-23 | [
"cond-mat"
] | J. Tinka Gammel and D.K. Campbell |
cond-mat/9209024 | Discrete to Continuous-Time Crossover due to Anisotropy in
Diffusion-Limited Two-Particle Annihilation Reactions | Diffusion-limited reaction A+A->inert with anisotropic hopping on the d=1
lattice, is solved exactly for a simultaneous updating, discrete time-step
dynamics. Diffusion-dominated processes slow down as the anisotropy increases.
For large times or large anisotropy, one can invoke the appropriate continuum
limits. In the... | 1992-09-18 | 2014-10-13 | [
"cond-mat"
] | Vladimir Privman |
cond-mat/9209023 | Multicritical Points And Reentrant Phenomenon In The BEG Model | The Blume - Emery - Griffiths model is investigated by use of the cluster
variation method in the pair approximation. We determine the regions of the
phase space where reentrant phenomenon takes place. Two regions are found,
depending on the sign of the reduced quadrupole - quadrupole coupling strength
$\xi$. For negat... | 1992-09-18 | 2009-10-22 | [
"cond-mat"
] | Carla Buzano and Alessandro Pelizzola |
cond-mat/9209022 | Generalized Coherent States for Dynamical Superalgebras | Coherent states for a general Lie superalgebra are defined following the
method originally proposed by Perelomov. Algebraic and geometrical properties
of the systems of states thus obtained are examined, with particular attention
to the possibility of defining a K\"ahler structure over the states
supermanifold and to t... | 1992-09-18 | 2007-05-23 | [
"cond-mat"
] | Alessandro Pelizzola and Corrado Topi |
cond-mat/9209021 | Growth Model of Au Films on Ru(001) | In an attempt to find generic features on the fractal growth of Au films
deposited on Ru(001), a simple simulation model based on irreversible
diffusion-limited aggregation (DLA) is discussed. Highly irregular
two-dimensional dentritic islands of Au particles that gradually grow on a
larger host lattice of Ru particles... | 1992-09-17 | 2009-10-22 | [
"cond-mat"
] | E. Canessa and A. Calmetta |
cond-mat/9209020 | Non-Linear I-V Characteristics of Double Schottky Barriers and
Polycrystalline Semiconductors | An attempt to determine theoretically the highly non-linear current-voltage
(I-V) characteristics of polycrystalline semiconductors, such as ZnO-based
varistors, is made from the electrical properties of individual grain
boundaries under dc bias. The role played by the fluctuations of double
Schottky barrier heights at... | 1992-09-17 | 2009-10-22 | [
"cond-mat"
] | E. Canessa and V.L. Nguyen |
cond-mat/9209018 | Fermi-linearization scheme for itinerant electrons with Clifford
variables | We propose here an alternative interpretation of the fermi-linarization
approach to interacting electron systems, based on the requirement that the
coefficients of the linearized operators are Clifford-like variables, whose
anticommutator equals an unknown constant $c$. We apply the approximation to
the Falicov-Kimball... | 1992-09-16 | 2009-10-22 | [
"cond-mat"
] | Arianna Montorsi and Alessandro Pelizzola |
cond-mat/9209019 | Kinetic Roughening in Surfaces of Crystals Growing on Disordered
Substrates | Substrate disorder effects on the scaling properties of growing crystalline
surfaces in solidification or epitaxial deposition processes are investigated.
Within the harmonic approach there is a phase transition into a low-temperature
(low-noise) superrough phase with a continuously varying dynamic exponent z>2
and a n... | 1992-09-16 | 2016-08-31 | [
"cond-mat",
"hep-th"
] | Yan-Chr Tsai and Yonathan Shapir |
cond-mat/9209017 | Numerical Study of the Wheatley-Hsu-Anderson Interlayer Tunneling
mechanism of High $T_c$ Superconductivity | We present results obtained (by exact diagonalization) for the problem of two
t-J planes with an interlayer coupling $t_\perp$. Our results for small hole
concentrations show that in-plane superconducting correlations are enhanced by
$t_\perp$. When the constraint on double occupancy in the t-J model is relaxed,
the en... | 1992-09-16 | 2009-10-22 | [
"cond-mat"
] | M. Arjunwadkar, G. Baskaran, R. Basu and V. N. Muthukumar |
cond-mat/9209014 | Metal Adatom Induced Corrugation of Cu(001) | We report the discovery of a metal adatom induced corrugation of Cu(001) as
probed by atom beam scattering (ABS). At Pb or Bi coverages of 0.05 (fraction
of Cu layer), and while a (1$\times$1) LEED pattern is still observed, the ABS
diffraction pattern from \underbar{uncovered} Cu(001) areas has changed
considerably fr... | 1992-09-14 | 2009-10-22 | [
"cond-mat"
] | Wei Li and Gianfranco Vidali |
cond-mat/9209016 | Models for Monolayers Adsorbed on a Square Substrate | Motivated by recent experimental studies of Hg and Pb monolayers on Cu(001)
we introduce a zero temperature model of a monolayer adsorbed on a square
substrate. Lennard-Jones potentials are used to describe the interaction
between pairs of adlayer-adlayer and adlayer-substrate atoms. We study a
special case in which th... | 1992-09-14 | 2009-10-22 | [
"cond-mat"
] | Ofer Biham, L.-W. Chen and Gianfranco Vidali |
cond-mat/9209015 | Growth of Metastable High-Order Commensurate Overlayers of Pb on Cu(001) | We studied the growth and ordering of a Pb layer deposited on Cu(001) at 150
K. Contrary to the case of adsorption of Pb at room temperature, islands
readily form. These islands order in a high-order commensurate structure of
symmetry ( sqrt(61) x sqrt(61) ) R arctan(5/6). We followed the growth of these
islands using ... | 1992-09-14 | 2007-05-23 | [
"cond-mat"
] | Wei Li and Gianfranco Vidali |
cond-mat/9209013 | Quantum Lattice Fluctuations and Luminescence in C_60 | We consider luminescence in photo-excited neutral C_60 using the
Su-Schrieffer-Heeger model applied to a single C_60 molecule. To calculate the
luminescence we use a collective coordinate method where our collective
coordinate resembles the displacement of the carbon atoms of the Hg(8) phonon
mode and extrapolates betw... | 1992-09-13 | 2007-05-23 | [
"cond-mat"
] | Barry Friedman, (Department of Physics and Texas Center for
Superconductivity, University of Houston, Texas and Department of Physics,
Sam Houston State University, Huntsville, Texas), Kikuo Harigaya,
(Fundamental Physics Section, Physical Science Division, Electrotechnical
Laboratory, Japan) |
cond-mat/9209012 | Completeness of the SO(4) Extended Bethe Ansatz for the One-Dimensional
Hubbard Model | We show how to construct a complete set of eigenstates of the hamiltonian of
the one-dimensional Hubbard model on a lattice of even length $L$. This is done
by using the nested Bethe Ansatz {\it and} the $SO(4)$ symmetry of the model.
We discuss in detail how the counting of independent eigenstates is carried
out. | 1992-09-12 | 2009-10-22 | [
"cond-mat"
] | Fabian H.L. Essler, Vladimir E. Korepin, Kareljan Schoutens |
cond-mat/9209009 | Spin liquid phase for the frustrated Quantum Heisenberg Antiferromagnet
on a square lattice | The existance of a spin disordered ground state for the frustrated Quantum
Heisenberg Antiferromagnet on a square lattice is reconsidered. It is argued
that there is a unique action which is continuous through the whole phase
diagram, except at the Lifshitz point, so that the Neel and helicoidal states
can not coexist ... | 1992-09-11 | 2009-10-22 | [
"cond-mat"
] | Jaime Ferrer |
cond-mat/9209010 | Study of spiral pattern formation in Rayleigh-Benard convection | We present a numerical study of a generalized two-dimensional Swift-Hohenberg
model of spiral pattern formation in Rayleigh-B\'enard convection in a
non-Boussinesq fluid. We demonstrate for the first time that a model for
convective motion is able to predict in considerable dynamical detail the
spontaneous formation of... | 1992-09-11 | 2008-12-24 | [
"cond-mat"
] | Hao-wen Xi, J.D. Gunton, Jorge Vinals |
cond-mat/9209011 | Anisotropic Pairing on a Three-Band Fermi Surface for $A_3{\rm C}_{60}$ | We study a model for anisotropic singlet pairing in $A_3{\rm C}_{60}$, using
a realistic model for the Fermi surface in a hypothesized
orientationally-ordered doped crystal. Anisotropic solutions are studied by
combining numerical solutions to the gap equation in the low-temperature phase
with a Landau expansion near t... | 1992-09-11 | 2009-10-22 | [
"cond-mat"
] | E. J. Mele and S. C. Erwin |
cond-mat/9209008 | A Simple Model for Coupled Magnetic and Quadrupolar Instabilities in
Uranium Heavy-Fermion Materials | We present a mean-field calculation of the phase diagram of a simple model of
localized moments, in the hexagonal uranium heavy-fermion compounds. The model
considers a non-Kramers quadrupolar doublet ground state magnetically coupled
with a singlet excited-state, favoring in-plane van-Vleck magnetism, as has
been conj... | 1992-09-08 | 2009-10-22 | [
"cond-mat"
] | V. L. Libero and D. L. Cox |
cond-mat/9209007 | Spin texture in weakly doped $Cu0_2$ planes explaining magnetic
correlation length and Raman scattering experiments | A model of $CuO_2$ planes weakly doped with partially delocalised holes is
considered. The effect of such a hole on the background AFM spin texture can be
represented by a purely magnetic Hamiltonian $H = - \sum_{(ijk)} (\vec S_i
\cdot \vec S_j \times \vec S_k)^2$, where the summation is over the four
triangles of a si... | 1992-09-08 | 2007-05-23 | [
"cond-mat"
] | R.J. Gooding, and A. Mailhot |
cond-mat/9209005 | Aspects of Spin Dynamics in the Cuprate Superconductors | One of the interesting aspects of the CuO superconductors is that
superconductivity is happening so close to the antiferromagnetic state. The
nuclear magnetic resonance and the recent neutron scattering experiments
clearly indicate that magnetic correlations persist in to the heavily doped
regime. In this paper we will... | 1992-09-05 | 2007-05-23 | [
"cond-mat"
] | H. Monien (Institute for Theoretical Physics, Universty of California,
Santa Barbara, CA 93106) |
cond-mat/9209006 | Spin Gaps and Spin Dynamics in La_{2-x}Sr_xCuO_4 and YBa_2Cu_3O7_\delta | A magnetic susceptibility which decreases with decreasing temperature is
observed in all $CuO_2$ based superconductors with less than optimal doping. We
propose that in $La_{2-x} Sr_x CuO_4$ this is due to antiferromagnetic ordering
which is prevented by the low spatial dimensionality while in $YBa_2 Cu_3
O_{6.6}$ it i... | 1992-09-05 | 2009-01-23 | [
"cond-mat"
] | A. J. Millis (AT&T Bell Laboratories, Murray Hill, NJ) and H. Monien
(Institute for Theoretical Physics, UCSB, Santa Barbara, CA) |
cond-mat/9209003 | Interface roughening with a time-varying external driving force | We present a theoretical and numerical investigation of the effect of a
time-varying external driving force on interface growth. First, we derive a
relation between the roughening exponents which comes from a generalized
Galilean invariance, showing how the critical dimension of the model is tunable
with the external f... | 1992-09-04 | 2010-12-17 | [
"cond-mat"
] | E. Hernandez-Garcia, T. Ala-Nissila, and Martin Grant |
cond-mat/9209004 | Combination Rules, Charge Symmetry, and Hall Effect in Cuprates | The rule relating the observed Hall coefficient to the spin and charge
responses of the uniform doped Mott insulator is derived. It is essential to
include the contribution of holon and spinon three-current correlations to the
effective action of the gauge field. In the vicinity of the Mott insulating
point the Hall co... | 1992-09-04 | 2009-10-22 | [
"cond-mat"
] | A.J. Schofield and J.M. Wheatley |
cond-mat/9209002 | New Exactly Solvable Model of Strongly Correlated Electrons Motivated by
High T_c Superconductivity | We present a new model describing strongly correlated electrons on a general
$d$-dimensional lattice. It differs from the Hubbard model by interactions of
nearest neighbours, and it contains the $t$-$J$ model as a special case. The
model naturally describes local electron pairs, which can move coherently at
arbitrary m... | 1992-09-03 | 2008-11-26 | [
"cond-mat"
] | Fabian H.L. Essler, Vladimir E. Korepin, Kareljan Schoutens |
cond-mat/9208026 | Electromagnetic response of a static vortex line in a type-II
superconductor : a microscopic study | The electromagnetic response of a pinned Abrikosov fluxoid is examined in the
framework of the Bogoliubov-de Gennes formalism. The matrix elements and the
selection rules for both the single photon (emission - absorption) and two
photon (Raman scattering) processes are obtained. The results reveal striking
asymmetries:... | 1992-08-31 | 2009-10-22 | [
"cond-mat"
] | Boldizsar Janko and Joel D. Shore (Laboratory of Atomic and Solid
State Physics, Cornell University, Ithaca, New York) |
cond-mat/9208025 | Interfacial adsorption phenomena of the three-dimensional three-state
Potts model | We study the interfacial adsorption phenomena of the three-state
ferromagnetic Potts model on the simple cubic lattice by the Monte Carlo
method. Finite-size scaling analyses of the net-adsorption yield the evidence
of the phase transition being of first-order and $k_{\rm B} T_{\rm C} / J =
1.8166 (2)$. | 1992-08-31 | 2009-10-22 | [
"cond-mat"
] | Atsushi Yamagata |
cond-mat/9208027 | Persistent spin and mass currents and Aharonov-Casher effect | Spin-orbit interaction produces persistent spin and mass currents in the ring
via the Aharonov-Casher effect. The experiment in $^3He-A_1$ phase, in which
this effect leads to the excitation of mass and spin supercurrent is proposed. | 1992-08-31 | 2009-10-22 | [
"cond-mat"
] | A. V. Balatsky and B. L. Altshuler |
cond-mat/9209001 | The Constraint for the Lowest Landau Level and the Effective Field
Theory Approach for the Fractional Quantum Hall System | By applying the Dirac quantization method, we build the constraint that all
electrons are in the lowest Landau level into the Chern-Simons field theory
approach for the fractional quantum Hall system and show that the constraint
can be transmuted from hierarchy to hierarchy. For a finite system, we derive
that the acti... | 1992-08-31 | 2007-05-23 | [
"cond-mat"
] | Zhong-Shui Ma and Zhao-Bin Su |
cond-mat/9208024 | Localized Electrons on a Lattice with Incommensurate Magnetic Flux | The magnetic field effects on lattice wavefunctions of Hofstadter electrons
strongly localized at boundaries are studied analytically and numerically. The
exponential decay of the wavefunction is modulated by a field dependent
amplitude J(t) which depends sensitively on the value of alpha (the magnetic
flux per plaquet... | 1992-08-29 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | Shmuel Fishmen, Yonathan Shapir, and Xiang-Rong Wang |
cond-mat/9208023 | Self-Consistent Theory of Polymerized Membranes | We study $D$-dimensional polymerized membranes embedded in $d$ dimensions
using a self-consistent screening approximation. It is exact for large $d$ to
order $1/d$, for any $d$ to order $\epsilon=4-D$ and for $d=D$. For flat
physical membranes ($D=2,d=3$) it predicts a roughness exponent $\zeta=0.590$.
For phantom memb... | 1992-08-27 | 2009-01-23 | [
"cond-mat"
] | Pierre Le Doussal and Leo Radzihovsky |
cond-mat/9208022 | Electronic and structural properties of GaN by the full-potential LMTO
method : the role of the $d$ electrons | The structural and electronic properties of cubic GaN are studied within the
local density approximation by the full-potential linear muffin-tin orbitals
method. The Ga $3d$ electrons are treated as band states, and no shape
approximation is made to the potential and charge density. The influence of $d$
electrons on th... | 1992-08-27 | 2009-10-22 | [
"cond-mat"
] | Vincenzo Fiorentini, Michael Methfessel, and Matthias Scheffler
(Fritz-Haber-Institut der Max-Planck-Gesellschaft, BERLIN, Germany) |
cond-mat/9208019 | Dimerization and Energy-Level Structures in Fullerene Tubules
Investigated with an Electron-Phonon Model | Possible dimerization patterns and electronic structures in fullerene tubules
as the \pi-conjugated systems are studied with the extended Su-Schrieffer-
Heeger model. We assume various lattice geometries, including helical and
nonhelical tubules, and tubules with end caps. The model is solved for the
half-filling case ... | 1992-08-26 | 2007-05-23 | [
"cond-mat"
] | Kikuo Harigaya (Fundamental Physics Section, Electrotechnical
Laboratory, Japan), Mitsutaka Fujita (Institute of Materials Science,
University of Tsukuba, Japan) |
cond-mat/9208017 | Non-Gaussian distribution in Random advection dynamics | Simulations of vortex tube dynamics reveal that the non-Gaussian nature of
turbulent fluctuation originates in the effect of random advection. A similar
non-Gaussian distribution is found numerically in a simplified statistical
model of random advection. An analytical solution is obtained in the mean-field
case. | 1992-08-26 | 2007-05-23 | [
"cond-mat"
] | Y-h. Taguchi and Hideki Takayasu |
cond-mat/9208018 | Homogeneous Isotropic Fluid Turbulence Simulated with the Lattice Vortex
Tube Model | Fully developed turbulence is analised with the lattice model employing
vortex tube representation which is introduced recently by the authors. Several
characteric features observed in experiments and direct numeric integrations
are reproduced. Not only Kolmogorov's inertial range is observed, but also
several local pr... | 1992-08-26 | 2007-05-23 | [
"cond-mat"
] | Y-h. Taguchi and Hideki Takayasu |
cond-mat/9208020 | Frequency dependent conductivity of vortex cores in type II
superconductors | This paper is relevant to the recent optical transmission experiments of
Karrai et al. for vortices in high Tc superconductors. We begin with a
substantial review and introduction. The microscopic response of vortices is
calculated from the Bogoliubov-deGennes equation, including an equation of
motion and conductivity.... | 1992-08-26 | 2009-10-22 | [
"cond-mat"
] | Ted Hsu |
cond-mat/9208021 | Mott Transition in the Hubbard model | In this article, I discuss W.Kohn's criterion for a metal insulator
transition, within the framework of a one band Hubbard model. This and related
ideas are applied to 1-dimensional Hubbard systems, and some intersting
miscellaneous results discussed. The Jordan Wigner transformation converting
the two species of fermi... | 1992-08-26 | 2015-06-25 | [
"cond-mat"
] | B.Sriram Shastry |
cond-mat/9208016 | Invariants of the Haldane-Shastry $SU(N)$ Chain | Using a formalism developed by Polychronakos, we explicitly construct a set
of invariants of the motion for the Haldane-Shastry $SU(N)$ chain. | 1992-08-25 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | Michael Fowler and Joseph A. Minahan |
cond-mat/9208015 | Number of solutions of the TAP equations for p--spin interaction spin
glasses | The number $\langle N_s\rangle$ of solutions of the equations of Thouless,
Anderson and Palmer for p--spin interaction spin glass models is calculated.
Below a critical temperature $T_c$ this number becomes exponentially large, as
it is in the SK--model ($p=2$). But in contrast to this, for any $p>2$ the
factor $\alpha... | 1992-08-25 | 2009-10-22 | [
"cond-mat"
] | H. Rieger |
cond-mat/9208014 | Electron focusing, mode spectroscopy and mass enhancement in small
GaAs/AlGaAs rings | A new electron focusing effect has been discovered in small single and
coupled GaAs/AlGaAs rings. The focusing in the single ring is attributed solely
to internal orbits. The focusing effect allows the ring to be used as a small
mass spectrometer. The focusing causes peaks in the magnetoresistance at low
fields, and th... | 1992-08-20 | 2009-10-22 | [
"cond-mat"
] | J Liu, K Ismail, KY Lee, JM Hong and S Washburn |
cond-mat/9208013 | Effect of Matrix Elements on the Pairing Kernel in Exchange Mediated
Superconductors | A method is derived for calculating the pairing kernel in exchange mediated
superconductors including matrix element effects. Various models for the
interaction vertex are considered, including spin exchange, orbital exchange,
and quadrupolar exchange. As an example, this formalism is applied to $UPt_3$
using relativis... | 1992-08-19 | 2009-10-22 | [
"cond-mat"
] | M. R. Norman |
cond-mat/9208012 | Suppression of tunneling by interference in half-integer--spin particles | Within a wide class of ferromagnetic and antiferromagnetic systems, quantum
tunneling of magnetization direction is spin-parity dependent: it vanishes for
magnetic particles with half-integer spin, but is allowed for integer spin. A
coherent-state path integral calculation shows that this topological effect
results fro... | 1992-08-19 | 2009-01-23 | [
"cond-mat"
] | Daniel Loss, David P. DiVincenzo, and G. Grinstein (IBM) |
cond-mat/9208011 | Destructive quantum interference in spin tunneling problems | In some spin tunneling problems, there are several different but
symmetry-related tunneling paths that connect the same initial and final
configurations. The topological phase factors of the corresponding tunneling
amplitudes can lead to destructive interference between the different paths, so
that the total tunneling ... | 1992-08-15 | 2009-10-22 | [
"cond-mat"
] | Jan von Delft and Christopher L. Henley (Laboratory of Atomic and
Solid State Physics, Cornell University, Ithaca, NY) |
cond-mat/9208010 | Dynamic Scaling of Coupled Nonequilibrium Interfaces | We propose a simple discrete model to study the nonequilibrium fluctuations
of two locally coupled 1+1 dimensional systems (interfaces). Measuring
numerically the tilt-dependent velocity we construct a set of stochastic
continuum equations describing the fluctuations in the model
The scaling predicted by the equation... | 1992-08-15 | 2009-10-22 | [
"cond-mat"
] | Albert-L\'aszl\'o Barab\'asi |
cond-mat/9208009 | Band Structure of the Fractional Quantum Hall Effect | The eigenstates of interacting electrons in the fractional quantum Hall phase
typically form fairly well defined bands in the energy space. We show that the
composite fermion theory gives insight into the origin of these bands and
provides an accurate and complete microscopic description of the strongly
correlated many... | 1992-08-13 | 2009-10-22 | [
"cond-mat"
] | G. Dev and J.K. Jain |
cond-mat/9208008 | Multiple jumps and vacancy diffusion in a face-centered cubic metal | The diffusion of monovacancies in gold has been studied by computer
simulation. Multiple jumps have been found to play a central role in the atomic
dynamics at high temperature, and have been shown to be responsible for an
upward curvature in the Arrhenius plot of the diffusion coefficient.
Appropriate saddle points on... | 1992-08-12 | 2010-12-17 | [
"cond-mat"
] | G. De Lorenzi and F. Ercolessi |
cond-mat/9208007 | Selection Rules for Two Channel Kondo Models of U and Ce ions in Metals | Symmetry based selection rules are developed providing minimal criteria for
the existence of two-channel Kondo interactions between conduction electrons
and the low energy degrees of freedom on U$^{4+}$ and Ce$^{3+}$ in a metal
host, assuming that the underlying microscopics are regulated by the Anderson
Hamiltonian. A... | 1992-08-12 | 2009-10-22 | [
"cond-mat"
] | D.L. Cox (Department of Physics, The Ohio State University, Columbus,
Ohio, USA) |
cond-mat/9208006 | The Hubbard Model at Infinite Dimensions: Thermodynamic and Transport
Properties | We present results on thermodynamic quantities, resistivity and optical
conductivity for the Hubbard model on a simple hypercubic lattice in infinite
dimensions. Our results for the paramagnetic phase display the features
expected from an intuitive analysis of the one-particle spectra and
substantiate the similarity of... | 1992-08-11 | 2009-10-22 | [
"cond-mat"
] | Th. Pruschke, D.L. Cox and M. Jarrell |
cond-mat/9208004 | The Electronic Spectrum of Fullerenes from the Dirac Equation | The electronic spectrum of sheets of graphite (plane honeycomb lattice)
folded into regular polihedra is studied. A continuum limit valid for
sufficiently large molecules and based on a tight binding approximation is
derived. It is found that a Dirac equation describes the flat graphite lattice.
Curving the lattice by ... | 1992-08-07 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | J. Gonz\'alez, F. Guinea and M.A.H. Vozmediano |
cond-mat/9208005 | Topological Aspects of Spin and Statistics in Nonlinear Sigma Models | We study the purely topological restrictions on allowed spin and statistics
of topological solitons in nonlinear sigma models. Taking as space the
connected $d$-manifold $X$, and considering nonlinear sigma models with the
connected manifold $M$ as target space, topological solitons are given by
elements of $pi_d(M)$. ... | 1992-08-07 | 2008-11-26 | [
"cond-mat"
] | John Baez, Micheal Ody and William Richter |
cond-mat/9208003 | Complexity and criticality in Laplacian growth models | We analyze the dynamical evolution of systems which obey simple growth laws,
like diffusion limited aggregation or dielectric breakdown. We show that, if
the developing patterns is sufficiently complex, a scale invariant noise
spectrum is generated, in agreement with the hypothesis that the system is in a
self organize... | 1992-08-07 | 2009-10-22 | [
"cond-mat"
] | F. Guinea, O. Pla and E. Louis |
cond-mat/9208002 | Transport Properties of the Infinite Dimensional Hubbard Model | Results for the optical conductivity and resistivity of the Hubbard model in
infinite spatial dimensions are presented. At half filling we observe a gradual
crossover from a normal Fermi-liquid with a Drude peak at $\omega=0$ in the
optical conductivity to an insulator as a function of $U$ for temperatures
above the an... | 1992-08-05 | 2009-10-22 | [
"cond-mat"
] | Th. Pruschke, D.L. Cox and M. Jarrell |
cond-mat/9208001 | Pressure Dependence of the Elastic Moduli in Aluminum Rich Al-Li
Compounds | I have carried out numerical first principles calculations of the pressure
dependence of the elastic moduli for several ordered structures in the
Aluminum-Lithium system, specifically FCC Al, FCC and BCC Li, L1_2 Al_3Li, and
an ordered FCC Al_7Li supercell. The calculations were performed using the full
potential linea... | 1992-08-03 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | Michael J. Mehl |
cond-mat/9207028 | Crystallography Without Periodicity | Text of a talk given at the International Colloquium on Group Theoretic
Methods in Physics, Salamanca, July, 1992. Another futile attempt to persuade
the world that space groups can be fun. | 1992-07-31 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | N. David Mermin |
cond-mat/9207027 | Critical Behavior of Charge Density Waves Below Threshold: Numerical and
Scaling Analysis | The critical behavior of pinned charge density waves (CDW's) is studied as
the threshold for sliding is approached. Using the Fukuyama-Lee-Rice
Hamiltonian with relaxational dynamics, the polarization and linear response
are calculated numerically. ... On the irreversible approach to threshold, the
response due to aval... | 1992-07-27 | 2009-09-25 | [
"cond-mat"
] | Daniel S. Fisher and A. Alan Middleton |
cond-mat/9207026 | Critical exponents of the degenerate Hubbard model | We study the critical behaviour of the \SUN{} generalization of the
one-dimensional Hubbard model with arbitrary degeneracy $N$. Using the
integrability of this model by Bethe Ansatz we are able to compute the spectrum
of the low-lying excitations in a large but finite box for arbitrary values of
the electron density a... | 1992-07-24 | 2009-10-22 | [
"cond-mat"
] | Holger Frahm and Andreas Schadschneider |
cond-mat/9207025 | Chern-Simons superconductivity | We argue that a simple Yukawa coupling between the $O(3)$ nonlinear
$\s$-model and charged Dirac fermions leads, after one-loop quantum
corrections, to a Meissner effect, in the disordered phase of the nonlinear
$\s$-model. | 1992-07-23 | 2011-04-20 | [
"cond-mat",
"hep-th"
] | D. Senechal |
cond-mat/9207023 | Melting a copper cluster: Critical droplet theory | We simulate the melting of a 71 A diameter cluster of Cu. At low temperatures
the crystal exhibits facets. With increasing temperatures the open facets
pre-melt, the melted regions coalesce into a liquid envelope containing a
crystalline nucleus, and the nucleus finally goes unstable to the supercooled
liquid. Using cr... | 1992-07-20 | 2015-06-25 | [
"cond-mat"
] | Ole H. Nielsen, James P. Sethna, Per Stoltze, Karsten W. Jacobsen and
Jens K. Norskov (Technical University of Denmark, Lyngby, Denmark) |
cond-mat/9207024 | Zero Frequency Current Noise for the Double Tunnel Junction Coulomb
Blockade | We compute the zero frequency current noise numerically and in several limits
analytically for the coulomb blockade problem consisting of two tunnel
junctions connected in series. At low temperatures over a wide range of
voltages, capacitances, and resistances it is shown that the noise measures the
variance in the num... | 1992-07-20 | 2009-10-22 | [
"cond-mat"
] | Selman Hershfield, John H. Davies, Per Hyldgaard, Christopher J.
Stanton, and John W. Wilkins |
cond-mat/9207022 | Cluster Algorithm for a Solid-On-Solid Model with Constraints | We adapt the VMR (valleys-to-mountains reflections) algorithm, originally
devised by us for simulations of SOS models, to the BCSOS model. It is the
first time that a cluster algorithm is used for a model with constraints. The
performance of this new algorithm is studied in detail in both phases of the
model, including... | 1992-07-19 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | M. Hasenbusch, G. Lana, M. Marcu and K. Pinn |
cond-mat/9207019 | Duality in Multi-layered Quantum Hall Systems | The braid group dynamics captures the fractional quantum Hall effect (FQHE)
as a manifestation of puncture phase. When the dynamics is generalized for
particles on a multi-sheeted surface, we obtain new tools which determine the
fractional charges, the quantum statistics, and the filling factors of the
multi-layered FQ... | 1992-07-17 | 2007-05-23 | [
"cond-mat"
] | C. Ting |
cond-mat/9207021 | Nonlinear Meissner Effect in CuO Superconductors | Recent theories of the NMR in the CuO superconductors are based on a
spin-singlet $d_{x^2-y^2}$ order parameter. Since this state has nodal lines on
the Fermi surface, nonlinear effects associated with low-energy quasiparticles
become important, particularly at low temperatures. We show that the
field-dependence of the... | 1992-07-17 | 2009-01-23 | [
"cond-mat"
] | S.K. Yip and J.A. Sauls |
cond-mat/9207020 | Mutual statistics, braid group, and the fractional quantum Hall effect | We show that the notion of mutual statistics arises naturally from the
representation theory of the braid group over the multi-sheeted surface. A
Hamiltonian which describes particles moving on the double-sheeted surface is
proposed as a model for the bilayered fractional quantum Hall effect (FQHE)
discovered recently.... | 1992-07-17 | 2015-06-25 | [
"cond-mat"
] | C. Ting |
cond-mat/9207015 | Fast-diffusion mean-field theory for k-body reactions in one dimension | We derive an improved mean-field approximation for k-body annihilation
reactions kA --> inert, for hard-core diffusing particles on a line,
annihilating in groups of k neighbors with probability 0 < q <= 1. The hopping
and annihilation processes are correlated to mimic chemical reactions. Our new
mean-field theory acco... | 1992-07-15 | 2014-10-13 | [
"cond-mat"
] | V. Privman, M. D. Grynberg |
cond-mat/9207014 | Morphology of Amorphous Layers Ballistically Deposited on a Planar
Substrate | We report numerical simulation of the deposition of spherical particles on a
planar surface, by ballistic, straight-line trajectory transport, and assuming
irreversible adhesion on contact with the surface or previously deposited
particles. Our data indicate that the deposit formed has a loosely layered
structure withi... | 1992-07-15 | 2014-10-13 | [
"cond-mat"
] | B. D. Lubachevsky, V. Privman, S.C. Roy |
cond-mat/9207018 | Vortex motion and the Hall effect in type II superconductors: a time
dependent Ginzburg-Landau theory approach | Vortex motion in type II superconductors is studied starting from a variant
of the time dependent Ginzburg-Landau equations, in which the order parameter
relaxation time is taken to be complex. Using a method due to Gor'kov and
Kopnin, we derive an equation of motion for a single vortex ($B\ll H_{c2}$) in
the presence ... | 1992-07-15 | 2008-11-26 | [
"cond-mat"
] | Alan T. Dorsey |
cond-mat/9207016 | Ferromagnetism of the 1-D Kondo Lattice Model: A Quantum Monte Carlo
Study | The one dimensional Kondo lattice model is investigated using Quantum Monte
Carlo and transfer matrix techniques. In the strong coupling region
ferromagnetic ordering is found even at large band fillings. In the weak
coupling region the system shows an RKKY like behavior. | 1992-07-15 | 2007-05-23 | [
"cond-mat"
] | Matthias Troyer and Diethelm W\"urtz |
cond-mat/9207017 | Transport Properties and Fluctuations in Type II Superconductors Near
$H_{c2}$ | We study the flux-flow Hall effect and thermomagnetic transport near the
upper critical field \hctwo\ in extreme type-II superconductors starting from a
suitable generalization of the time dependent Ginzburg-Landau equations. We
explicitly incorporate the effects of backflow into the calculations of the
local electric ... | 1992-07-15 | 2009-10-22 | [
"cond-mat"
] | Robert J. Troy and Alan T. Dorsey |
cond-mat/9207013 | The Majorana Fermions for Quantum S=1/2 Antiferromagnet? | Recently it has been suggested by A. M. Tsvelik that quantum S=1/2
antiferromagnet can be described by the Majorana fermions in an irreducible way
and without any constraint. In contrast to this claim we shall show that this
representation is highly reducible. It is a direct sum of four irreducible
fundamental represen... | 1992-07-14 | 2007-05-23 | [
"cond-mat"
] | Alexander Moroz |
cond-mat/9207012 | Magnetic and Dynamic Properties of the Hubbard Model in Infinite
Dimensions | An essentially exact solution of the infinite dimensional Hubbard model is
made possible by using a self-consistent mapping of the Hubbard model in this
limit to an effective single impurity Anderson model. Solving the latter with
quantum Monte Carlo procedures enables us to obtain exact results for the one
and two-par... | 1992-07-10 | 2009-10-22 | [
"cond-mat"
] | M. Jarrell and Thomas Pruschke |
cond-mat/9207011 | Numerical study of pattern formation following a convective instability
in non-Boussinesq fluids | We present a numerical study of a model of pattern formation following a
convective instability in a non-Boussinesq fluid. It is shown that many of the
features observed in convection experiments conducted on $CO_{2}$ gas can be
reproduced by using a generalized two-dimensional Swift-Hohenberg equation. The
formation o... | 1992-07-10 | 2009-10-22 | [
"cond-mat"
] | Hao-wen Xi, Jorge Vinals and J.D. Gunton |
cond-mat/9207010 | Unstable Periodic Orbits in the Stadium Billiard | A systematic numerical technique for the calculation of unstable periodic
orbits in the stadium billiard is presented. All the periodic orbits up to
order $p=11$ are calculated and then used to calculate the average Lyapunov
exponent and the topological entropy. Applications to semiclassical
quantization and to experim... | 1992-07-09 | 2009-10-22 | [
"cond-mat"
] | Ofer Biham and Mark Kvale |
cond-mat/9207009 | Modification of the Magnetic Flux-Line Interaction at a Superconductor's
Surface | The pair interaction between magnetic flux lines in a semi-infinite slab of
an anisotropic type-II superconductor in an external field is derived in the
London limit. The case where the applied field is normal to the
superconductor/vacuum interface is considered. The presence of stray fields
near the surface leads to a... | 1992-07-08 | 2007-05-23 | [
"cond-mat"
] | M. Cristina Marchetti (Syracuse Univ.) |
cond-mat/9207008 | Vortex Line Fluctuations in Model High Temperature Superconductors | We carry out Monte Carlo simulations of the uniformly frustrated 3d XY model
as a model for vortex line fluctuations in a high Tc superconductor. A density
of vortex lines of f=1/25 is considered. We find two sharp phase transitions.
The low T phase is an ordered vortex line lattice. The high T normal phase is a
vortex... | 1992-07-07 | 2009-10-22 | [
"cond-mat"
] | Ying-Hong Li (ITP Utrecht) and S. Teitel (U of Rochester) |
cond-mat/9207006 | Phase Diagram of a Lattice Microemulsion Model in Two Dimensions | The phase diagram of a lattice microemulsion model proposed by Ciach, H{\o}ye
and Stell is studied using mean-field theory and Monte Carlo simulations.
Surfactant directional degrees of freedom are summed out exactly before
mean-field theory is applied, and the resulting phase diagrams are much
improved compared with p... | 1992-07-06 | 2009-10-22 | [
"cond-mat"
] | Per Arne Slotte |
cond-mat/9207007 | Low voltage conductance of small tunnel junctions | A discrete charge transfer in a small tunnel junction where Coulomb
interactions are important can excite electron-hole pairs near the Fermi level.
We use a simple model to study the associated nonequilibrium properties and
found two novel effects: (i) for junctions with electrodes of the same
electronic properties, a ... | 1992-07-06 | 2007-05-23 | [
"cond-mat"
] | F. Guinea and M. Ueda |
cond-mat/9207005 | On the Harmonic Oscillator Regularization of Partition Functions | A convenient way to calculate $N$-particle quantum partition functions is by
confining the particles in a weak harmonic potential instead of using a finite
box or periodic boundary conditions. There is, however, a slightly different
connection between partition functions and thermodynamic quantities with such
volume re... | 1992-07-04 | 2007-05-23 | [
"cond-mat"
] | K{\aa}re Olaussen |
cond-mat/9207004 | Random Sequential Adsorption on a Line: Mean-Field Theory of Diffusional
Relaxation | We develop a new fast-diffusion approximation for the kinetics of deposition
of extended objects on a linear substrate, accompanied by diffusional
relaxation. This new approximation plays the role of the mean-field theory for
such processes and is valid over a significantly larger range than an earlier
variant, which w... | 1992-07-03 | 2010-10-12 | [
"cond-mat"
] | Vladimir Privman and Mustansir Barma |
cond-mat/9207003 | Fluctuating Interfaces, Surface Tension, and Capillary Waves: An
Introduction | We present an introduction to modern theories of interfacial fluctuations and
the associated interfacial parameters: surface tension and surface stiffness,
as well as their interpretation within the capillary wave model. Transfer
matrix spectrum properties due to fluctuation of an interface in a
long-cylinder geometry ... | 1992-07-02 | 2014-10-13 | [
"cond-mat",
"astro-ph",
"hep-lat"
] | Vladimir Privman |
cond-mat/9207002 | Model of Cluster Growth and Phase Separation: Exact Results in One
Dimension | We present exact results for a lattice model of cluster growth in 1D. The
growth mechanism involves interface hopping and pairwise annihilation
supplemented by spontaneous creation of the stable-phase, +1, regions by
overturning the unstable-phase, -1, spins with probability p. For cluster
coarsening at phase coexisten... | 1992-07-02 | 2014-10-13 | [
"cond-mat",
"hep-lat"
] | Vladimir Privman |
cond-mat/9207001 | Exact Results for a Three-Body Reaction-Diffusion System | A system of particles hopping on a line, singly or as merged pairs, and
annihilating in groups of three on encounters, is solved exactly for certain
symmetrical initial conditions. The functional form of the density is nearly
identical to that found in two-body annihilation, and both systems show
non-mean-field, ~1/t**... | 1992-07-02 | 2010-10-12 | [
"cond-mat",
"hep-lat"
] | Vladimir Privman |
cond-mat/9206011 | Correlations for the S=1/2 Antiferromagnet on a Truncated Tetrahedron | The antiferromagnetic Heisenberg Hamiltonian is investigated on a truncated
tetrahedron, which is a closed 12 site system. We find that the ground state
has many similarities to that of $C_{60}$. We study 2- and 4-spin correlations
in the classical ground state of the truncated tetrahedron and calculate the
same correl... | 1992-06-26 | 2009-10-22 | [
"cond-mat"
] | D. Coffey and S. A. Trugman |
cond-mat/9206010 | Magnetic Properties of Undoped $C_{60}$ | The Heisenberg antiferromagnet, which arises from the large $U$ Hubbard
model, is investigated on the $C_{60}$ molecule and other fullerenes. The
connectivity of $C_{60}$ leads to an exotic classical ground state with
nontrivial topology. We argue that there is no phase transition in the Hubbard
model as a function of ... | 1992-06-26 | 2009-10-22 | [
"cond-mat"
] | D. Coffey and S. A. Trugman |
cond-mat/9206009 | Quantum Field Theories on Manifolds with Curved Boundaries: Scalar
Fields | A framework allowing for perturbative calculations to be carried out for
quantum field theories with arbitrary smoothly curved boundaries is described.
It is based on an expansion of the heat kernel derived earlier for arbitrary
mixed Dirichlet and Neumann boundary conditions.
The method is applied to a general renor... | 1992-06-26 | 2016-08-31 | [
"cond-mat"
] | D.M. McAvity and H. Osborn |
cond-mat/9206008 | The Nonequilibrium Dynamics of Driven Line Liquids | We study the nonequilibrium dynamics of line liquids as realized in the
nonlinear motion of flux lines of a superconductor driven by an applied
electric current. Our analysis suggests a transition in the dynamics of the
lines from a smooth, laminar phase at small driving forces, to a rough,
turbulent phase when the dri... | 1992-06-24 | 2009-10-22 | [
"cond-mat"
] | Terence Hwa |
cond-mat/9206007 | New Fermionic Description of Quantum S = 1/2 Antiferromargnet | A novel approach to S =1/2 antiferromagnets with strong fluctuations based on
the representation of spin-1/2 operators as bylinear forms of real (Majorana)
fermions is suggested. This representation has the advantage of being
irreducible without any constraints on the fermionic Hilbert space. This
property allows to de... | 1992-06-19 | 2009-10-22 | [
"cond-mat"
] | A. M. Tsvelik |
cond-mat/9206006 | Directed Polymer Blends and Quantum Critical Phenomena | The statistical mechanics of directed line-like objects, such as directed
polymers in an external field, strands of dipoles in both ferro- and
electrorheological fluids, and flux lines in high-$T_{\tiny C}$ superconductors
bears a close resemblance to the quantum mechanics of bosons in $2+1$
dimensions. We show that si... | 1992-06-18 | 2009-10-22 | [
"cond-mat"
] | Randall D. Kamien and David R. Nelson |
cond-mat/9206005 | Dimensional Reduction of a Generalized Flux Problem | A generalized flux problem with Abelian and non-Abelian fluxes is considered.
In the Abelian case we shall show that the generalized flux problem for
tight-binding models of noninteracting electrons on either $2n$ or $2n+1$
dimensional lattice can always be reduced to a $n$ dimensional hopping problem.
A residual freed... | 1992-06-18 | 2009-10-22 | [
"cond-mat",
"hep-lat",
"hep-th"
] | Alexander Moroz |
cond-mat/9206004 | New Dynamic Monte Carlo Renormalization Group Method | The dynamical critical exponent of the two-dimensional spin-flip Ising model
is evaluated by a Monte Carlo renormalization group method involving a
transformation in time. The results agree very well with a finite-size scaling
analysis performed on the same data. The value of $z = 2.13 \pm 0.01$ is
obtained, which is c... | 1992-06-13 | 2009-10-22 | [
"cond-mat"
] | Martin-D. Lacasse (1), Jorge Vinals (2), Martin Grant(1) ((1) Centre
for the Physics of Materials and Department of Physics, McGill University,
Rutherford Building, Montr\'eal, Qu\'ebec, Canada (2) Supercomputer
Computations Research Institute, Florida State University, Tallahassee,
Florida) |
cond-mat/9206003 | Interactions for odd-omega gap singlet superconductors | A class of singlet superconductors with a gap function $\Delta({\bf k},
\omega_n)$ which is {\it odd} in both momentum and Matsubara frequency was
proposed recently \cite{ba}. To show an instability in the {\it odd} gap
channel, a model phonon propagator was used with the $p$-wave interaction
strength larger than the $... | 1992-06-10 | 2009-10-22 | [
"cond-mat"
] | Elihu Abrahams(Rutgers), Alexander Balatsky(Los Alamos), J.R.
Schrieffer(NHMFL), Philip B. Allen(SUNY) |
cond-mat/9206002 | Twisted Boundary Conditions and the Adiabatic Ground State for the
Attractive XXZ Luttinger Liquid | The one-dimensional attractive lattice fermion gas equivalent to the
Heisenberg-Ising spin 1/2 chain is studied for a ring geometry threaded by
magnetic flux. We find that for charged fermions having interaction strength
$\Delta=\cos(\pi / p)$ with $p$ {\it noninteger}, the adiabatic ground state is
periodic in the mag... | 1992-06-03 | 2009-10-22 | [
"cond-mat"
] | Naichang Yu and Michael Fowler |
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