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/9512071 | The Yangian Symmetry of the Hubbard Models with Variable Range Hopping | We present two pairs of Y($sl_2$) Yangian symmetries for the trigonometric
and hyperbolic versions of the Hubbard model with non-nearest-neighbour
hopping. In both cases the Yangians are mutually commuting, hence can be
combined into a Y($sl_2$)$\oplus$Y($sl_2$) Yangian. Their mutual commutativity
is of dynamical origi... | 1995-12-11 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Frank G\"ohmann, Vladimir Inozemtsev |
cond-mat/9512075 | Exact Critical Properties of the Multi-Component Interacting Fermion
Model with Boundaries | Exact critical properties of the one-dimensional SU($N$) interacting fermion
model with open boundaries are studied by using the Bethe ansatz method. We
derive the surface critical exponents of various correlation functions using
boundary conformal field theory. They are classified into two types, i.e. the
exponents fo... | 1995-12-11 | 2009-10-28 | [
"cond-mat"
] | S. Fujimoto, and N. Kawakami |
cond-mat/9512076 | Subdiffusive and superdiffusive quantum transport and generalized
duality | As a generic model for transport of interacting fermions through a barrier or
interstitials in a lattice, quantum Brownian motion in a periodic potential is
studied. There is a duality transformation between the continuous coordinate or
phase representation and the discrete momentum or charge representation for
general... | 1995-12-11 | 2007-05-23 | [
"cond-mat"
] | M. Sassetti (Genova, Italy), H. Schomerus (Essen, Germany), U. Weiss
(Stuttgart, Germany) |
cond-mat/9512078 | Chiral Tomonaga-Luttinger Liquids and the Calogero-Sutherland Model with
Boundaries | Applying boundary conformal field theory we study the low-energy critical
behavior of the Calogero-Sutherland model of $BC_N$-type. The universality
class of the model is found to be a {\it chiral} Tomonaga-Luttinger liquid.
Various correlation exponents depending on the interaction strength are
obtained. | 1995-12-11 | 2007-05-23 | [
"cond-mat"
] | Takashi Yamamoto, Norio Kawakami, Sung-Kil Yang |
cond-mat/9512068 | Polymers with Randomness: Phases and Phase Transitions | We discuss various aspects of the randomly interacting directed polymers with
emphasis on the phases and phase transition. We also discuss the behaviour of
overlaps of directed paths in a random medium. | 1995-12-10 | 2015-06-25 | [
"cond-mat"
] | Somendra M. Bhattacharjee and Sutapa Mukherji |
cond-mat/9512067 | Total dielectric function approach to the electron Boltzmann equation
for scattering from a two-dimensional coupled mode system | The nonequilibrium total dielectric function lends itself to a simple and
general method for calculating the inelastic collision term in the electron
Boltzmann equation for scattering from a coupled mode system. Useful
applications include scattering from plasmon-polar phonon hybrid modes in
modulation doped semiconduc... | 1995-12-10 | 2007-05-23 | [
"cond-mat"
] | B.A. Sanborn |
cond-mat/9512064 | Kondo effect in flux phases | We consider a band of fermions in two space dimensions with a flux phase
(relativistic) dispersion relation coupled to a local magnetic impurity via an
$ s-d$ interaction. This model describes spinons of a flux phase and it is also
a qualitative model of the quasiparticles in a $d_{x^2-y^2}$ superconductor. We
find a z... | 1995-12-09 | 2009-10-28 | [
"cond-mat"
] | Carlos R. Cassanello and Eduardo Fradkin |
cond-mat/9512065 | Exact ground-state correlation functions of the one-dimensional strongly
correlated electron models with the resonating-valence-bond ground state | We investigate the one-dimensional strongly correlated electron models which
have the resonating-valence-bond state as the exact ground state. The
correlation functions are evaluated exactly using the transfer matrix method
for the geometric representations of the valence-bond states. In this method,
we only treat matr... | 1995-12-09 | 2009-10-28 | [
"cond-mat"
] | Masanori Yamanaka, Shinsuke Honjo, Yasuhiro Hatsugai, and Mahito
Kohmoto |
cond-mat/9512066 | First Order Superconductor to Insulator Transition: Evidence for a
Supersolid Phase | The superconductor to insulator transition in the presence of long-range
Coulomb interactions is studied using Monte Carlo techniques. At integer
filling the transition is second order. At half filling we find evidence of a
first order transition to a state with non-zero $S_{\pi,\pi}$. No intervening
supersolid phase i... | 1995-12-09 | 2009-10-28 | [
"cond-mat"
] | Erik Sorensen (IU Bloomington) and Eric Roddick (OSU) |
cond-mat/9512061 | Quantum Numbers of Textured Hall Effect Quasiparticles | We propose a class of variational wave functions with slow variation in spin
and charge density and simple vortex structure at infinity, which properly
generalize both the Laughlin quasiparticles and baby Skyrmions. We argue that
the spin of the corresponding quasiparticle has a fractional part related in a
universal f... | 1995-12-08 | 2009-10-28 | [
"cond-mat"
] | Chetan Nayak and Frank Wilczek |
cond-mat/9512056 | Superconducting correlation in the one-dimensional $t$-$J$ model with
anisotropic spin interaction and broken parity | A variant of the one-dimensional $t$-$J$ model with anisotropic spin
interaction and broken parity is studied by the nested algebraic Bethe-ansatz
method. The gapless charge excitations and the gapful spin excitations are
obtained. It is shown that the singlet-superconducting correlation dominates in
the low-density re... | 1995-12-08 | 2019-08-15 | [
"cond-mat"
] | J. Shiraishi, Y. Morita, M. Kohmoto |
cond-mat/9512060 | Ferromagnetism in the Hubbard model on the square lattice: Improved
instability criterion for the Nagaoka state | The instability of the fully polarized ferromagnetic state (Nagaoka state)
with respect to single spin flips is re-examined for the Hubbard model on the
square lattice with a large family of variational wave functions which include
correlation effects of the majority spins in the vicinity of the flipped spin.
We find a... | 1995-12-08 | 2007-05-23 | [
"cond-mat"
] | P. Wurth, G. Uhrig, E. Mueller-Hartmann |
cond-mat/9512058 | Phase diagram of a semiflexible polymer chain in a $\theta$ solvent:
application to protein folding | We consider a lattice model of a semiflexible homopolymer chain in a bad
solvent. Beside the temperature $T$, this model is described by (i) a curvature
energy $\varepsilon_h$, representing the stiffness of the chain (ii) a
nearest-neighbour attractive energy $\varepsilon_v$, representing the solvent
(iii) the monomer ... | 1995-12-08 | 2009-10-28 | [
"cond-mat",
"q-bio"
] | S.Doniach, T. Garel, and H.Orland (Applied Physics,Stanford and SPhT,
Saclay) |
cond-mat/9512057 | A variational study of the random-field XY model | A disorder-dependent Gaussian variational approach is applied to the
$d$-dimensional ferromagnetic XY model in a random field. The randomness yields
a non extensive contribution to the variational free energy, implying a random
mass term in correlation functions. The Imry-Ma low temperature result,
concerning the exist... | 1995-12-08 | 2009-10-28 | [
"cond-mat"
] | T.Garel, G.Iori and H.Orland (SPhT, CE-Saclay, France) |
cond-mat/9512059 | Exact Finite-Size Spectra in the Kondo Problem and Boundary Conformal
Field Theory | The exact finite-size spectra for several quantum impurity models related to
the Kondo problem are obtained from the Bethe ansatz solutions. Using the
finite-size scaling in boundary conformal field theory, we determine various
surface critical exponents from the exact spectrum, which accord with those
obtained by Affl... | 1995-12-08 | 2007-05-23 | [
"cond-mat",
"hep-th"
] | S. Fujimoto, N. Kawakami, and S. -K. Yang |
cond-mat/9512063 | Failure of Fermi-Liquid Theory at Strong Coupling | We investigate quantitatively the effects of strong electron-electron
coupling onto the dynamics of lattice electrons. To that purpose the
self-consistent version of the bubble-chain approximation at zero temperature
and half filling of the Anderson (Hubbard) model is used. Special attention is
paid to a critical regio... | 1995-12-08 | 2007-05-23 | [
"cond-mat"
] | Vaclav Janis (Inst. Phys. ASCR, Prague) |
cond-mat/9512062 | The Kasteleyn model and a cellular automaton approach to traffic flow | We propose a bridge between the theory of exactly solvable models and the
investigation of traffic flow. By choosing the activities in an apropriate way
the dimer configurations of the Kasteleyn model on a hexagonal lattice can be
interpreted as space-time trajectories of cars. This then allows for a
calculation of the... | 1995-12-08 | 2009-10-28 | [
"cond-mat"
] | J.G. Brankov, V.B. Priezzhev, A. Schadschneider, M. Schreckenberg |
cond-mat/9512050 | Renormalization group approach to anisotropic superconductors at finite
temperature | A renormalization group (RG) analysis of the superconductive instability of
an anisotropic fermionic system is developed at a finite temperature. The
method appears a natural generalization of Shankar's approach to interacting
fermions and of Weinberg's discussion about anisotropic superconductors at T=0.
The need of s... | 1995-12-07 | 2009-10-28 | [
"cond-mat"
] | Fabio Siringo, Giuseppe G.N. Angilella and Renato Pucci |
cond-mat/9512047 | Monte Carlo Simulations of the Spatial Transport of Excitons in a
Quantum Well Structure | Monte Carlo Simulations of the Spatial Transport of Excitons in a Quantum
Well Structure Yutaka Takahashi (Dep. of Electrical and Information Eng.,
Yamagata University) The in-plane spatial transport of nonequilibrium excitons
in a GaAs quantum well structure has been simulated with the ensemble Monte
Carlo method. The... | 1995-12-07 | 2009-10-28 | [
"cond-mat"
] | Yutaka Takahashi (Dep. of Electrical and Information Eng., Yamagata
University) |
cond-mat/9512051 | Breakdown of Landau Fermi liquid properties in the $2D$ Boson-Fermion
model | We study the normal state spectral properties of the fermionic excitations in
the Boson-Fermion model. The fermionic single particle excitations show a
flattening of the dispersion as the Fermi vector ${\bf k}_{_F}$ is approached
from below, forshadowing a Bogoliubov spectrum of a superconducting ground
state. The widt... | 1995-12-07 | 2009-10-28 | [
"cond-mat"
] | J. Ranninger, J.M. Robin |
cond-mat/9512055 | Acoustic Emission from crumpling paper | From magnetic systems to the crust of the earth, many physical systems that
exibit a multiplicty of metastable states emit pulses with a broad power law
distribution in energy. Digital audio recordings reveal that paper being
crumpled, a system that can be easily held in hand, is such a system. Crumpling
paper both usi... | 1995-12-07 | 2009-10-28 | [
"cond-mat"
] | Paul A. Houle and James P. Sethna (LASSP, Cornell University) |
cond-mat/9512052 | Atomic and electronic structure of ideal and reconstructed $\alpha$-Sn
(111) surface | We have carried out an ab-initio study of $\alpha$-Sn (111), with the aim of
predicting and understanding its structure, reconstructions, and electronic
states. We consider a variety of structural possibilities, and optimize them by
moving atoms according to Hellmann-Feynman forces. Our results indicate that
the unreco... | 1995-12-07 | 2009-10-28 | [
"cond-mat",
"mtrl-th"
] | Zhong-Yi Lu, Guido L. Chiarotti, S. Scandolo, and E. Tosatti
(International School for Advanced Studies (SISSA), Trieste, Italy) |
cond-mat/9512054 | Thermal Conductivity of Superconducting UPt$_3$ at Low Temperatures | We study the thermal conductivity within the E$_{1g}$ and E$_{2u}$ models for
superconductivity in UPt$_3$ and compare the theoretical results for electronic
heat transport with recently measured results reported by Lussier, Ellman and
Taillefer. The existing data down to $T/T_c\approx 0.1$ provides convincing
evidence... | 1995-12-07 | 2009-10-28 | [
"cond-mat",
"supr-con"
] | M.J. Graf, S.-K. Yip and J.A. Sauls (Northwestern University) |
cond-mat/9512048 | Long-Range Fluctuation-Induced Attraction of Vortices to the Surface in
Layered Superconductors | It is shown that in extremely anisotropic layered superconductors the
interaction of vortex lines with a parallel planar surface, which for straight
lines along the c-axis decreases exponentially over the in-plane penetration
depth $\lambda$, becomes a long-range dipole--dipole attraction when the vortex
line is distor... | 1995-12-07 | 2009-10-28 | [
"cond-mat"
] | E.H. Brandt, R.G. Mints, and I.B. Snapiro |
cond-mat/9512049 | Criticality in driven cellular automata with defects | We study three models of driven sandpile-type automata in the presence of
quenched random defects. When the dynamics is conservative, all these models,
termed the random sites (A), random bonds (B), and random slopes (C),
self-organize into a critical state. For Model C the concentration-dependent
exponents are nonuniv... | 1995-12-07 | 2015-06-25 | [
"cond-mat"
] | Bosiljka Tadic (IJS, Ljubljana, Slovenia) and Ramakrishna Ramaswamy
(JNU, New Delhi, India) |
cond-mat/9512046 | Quantum Monte Carlo study of the one-dimensional Holstein model of
spinless fermions | The Holstein model of spinless fermions interacting with dispersionless
phonons in one dimension is studied by a Green's function Monte Carlo
technique. The ground state energy, first fermionic excited state, density wave
correlations, and mean lattice displacement are calculated for lattices of up
to 16 sites, for one... | 1995-12-07 | 2009-10-28 | [
"cond-mat"
] | Ross H. McKenzie, C. J. Hamer, and D. W. Murray (University of New
South Wales, Sydney, Australia) |
cond-mat/9512053 | Transport in Channels and Films with Rough Surfaces. II. Quantized
Motion of Ballistic Particles | This is the second in the series of papers on transport phenomena along
random rough surfaces. We apply our simple general approach\cite{r1} to
transport in very narrow channels, when the particles wavelength is comparable
to the width of the channels and the motion across the channel is characterized
by discrete quant... | 1995-12-07 | 2007-05-23 | [
"cond-mat"
] | A.E.Meyerovich (http://www.phys.uri.edu/people/meyerovich/home.htm),
S.Stepaniants |
cond-mat/9512036 | Nature of Phase Transitions of Superconducting Wire Networks in a
Magnetic Field | We study $I$-$V$ characteristics of periodic square Nb wire networks as a
function of temperature in a transverse magnetic field, with a focus on three
fillings 2/5, 1/2, and 0.618 that represent very different levels of
incommensurability. For all three fillings, a scaling behavior of $I$-$V$
characteristics is found,... | 1995-12-06 | 2009-10-28 | [
"cond-mat"
] | X.S. Ling, M.J. Higgins, Chao Tang, P.M. Chaikin, and S. Bhattacharya
(NEC Research Institute), H.J. Lezec, J.S. Tsai, J. Fujita, H. Numata, Y.
Nakamura, and Y. Ochiai (NEC Fundamental Research Laboratories) |
cond-mat/9512042 | Study of Chirality in the Two-Dimensional XY Spin Glass | We study the chirality in the Villain form of the XY spin glass in
two--dimensions by Monte Carlo simulations. We calculate the chiral-glass
correlation length exponent $\nu_{\scriptscriptstyle CG}$ and find that
$\nu_{\scriptscriptstyle CG} = 1.8 \pm 0.3$ in reasonable agreement with
earlier studies. This indicates th... | 1995-12-06 | 2009-10-28 | [
"cond-mat"
] | H. S. Bokil and A. P. Young |
cond-mat/9512037 | Mutual Exclusion Statistics in the Exactly Solvable Model of the Mott
Metal-Insulator Transition | We study statistical characterization of the many-body states in the exactly
solvable model with internal degree of freedom in more than one dimension. The
model exhibits the Mott metal-insulator transition. It is shown that the ground
state is described by that of a generalized ideal gas of particles (called
exclusons... | 1995-12-06 | 2019-08-17 | [
"cond-mat"
] | Yasuhiro Hatsugai, Mahito Kohmoto, Tohru Koma and Yong-Shi Wu |
cond-mat/9512035 | Exchange Monte Carlo Method and Application to Spin Glass Simulations | We propose an efficient Monte Carlo algorithm for simulating a
``hardly-relaxing" system, in which many replicas with different temperatures
are simultaneously simulated and a virtual process exchanging configurations of
these replica is introduced. This exchange process is expected to let the
system at low temperature... | 1995-12-06 | 2009-10-28 | [
"cond-mat"
] | Koji Hukushima and Koji Nemoto |
cond-mat/9512044 | Ferromagnetism in the Hubbard Model on the Infinite Dimensional fcc
Lattice | The Hubbard model on the fcc lattice is studied in the limit of infinite
spatial dimensions. At sufficiently strong interaction finite temperature
Quantum Monte Carlo calculations yield a second order phase transition to a
highly polarized ferromagnetic state. Ferromagnetism is stable over a wide hole
doping regime but... | 1995-12-06 | 2007-05-23 | [
"cond-mat"
] | Martin Ulmke |
cond-mat/9512038 | Critical behavior of Josephson-junction arrays at f=1/2 | The critical behavior of frustrated Josephson-junction arrays at $f=1/2$ flux
quantum per plaquette is considered. Results from Monte Carlo simulations and
transfer matrix computations support the identification of the critical
behavior of the square and triangular classical arrays and the one-dimensional
quantum ladde... | 1995-12-06 | 2009-10-28 | [
"cond-mat"
] | Enzo Granato, J.M. Kosterlitz and M.P. Nightingale |
cond-mat/9512039 | Fluctuating loops and glassy dynamics of a pinned line in two dimensions | We represent the slow, glassy equilibrium dynamics of a line in a
two-dimensional random potential landscape as driven by an array of
asymptotically independent two-state systems, or loops, fluctuating on all
length scales. The assumption of independence enables a fairly complete
analytic description. We obtain good ag... | 1995-12-06 | 2009-10-28 | [
"cond-mat"
] | Anders B. Eriksson (1), Jari M. Kinaret (2), and Lev V. Mikheev (1)
((1) Nordita, Copenhagen, (2) Chalmers Univ. of Techn. and Gothemburg Univ.) |
cond-mat/9512041 | Effect of Crack Blunting on Subsequent Crack Propagation | Theories of toughness of materials depend on an understanding of the
characteristic instabilities of the crack tip, and their possible interactions.
In this paper we examine the effect of dislocation emission on subsequent
cleavage of a crack and on further dislocation emission. The work is an
extension of the previous... | 1995-12-06 | 2007-05-23 | [
"cond-mat",
"mtrl-th"
] | J. Schi{\o}tz, A. E. Carlsson, L. M. Canel, and Robb Thomson |
cond-mat/9512043 | Compressible Strips, Chiral Luttinger Liquids and All That Jazz | When the quantum Hall effect occurs in a two-dimensional electron gas, all
low-energy elementary excitations are localized near the system edge. The edge
acts in many ways like a one-dimensional ring of electrons, except that a
finite current flows around the ring in equilibrium. This article is a brief
and informal re... | 1995-12-06 | 2007-05-23 | [
"cond-mat"
] | A.H. MacDonald (Indiana University) |
cond-mat/9512045 | Time Periodic Behavior of Multiband Superlattices in Static Electric
Fields | We use an analytic perturbation expansion for the two-band system of tight
binding electrons to discuss Bloch oscillations and Zener tunneling within this
model. We make comparison with recent numerical results and predict
analytically the frequency of radiation expected from Zener tunneling,
including its disappearanc... | 1995-12-06 | 2009-10-28 | [
"cond-mat"
] | Daniel W. Hone and Xian-Geng Zhao |
cond-mat/9512040 | Morphological Instability of Steps During Crystal Growth from Solution
Flow | It is shown that step moving to meet solution flow can be unstable against
lateral perturbations. The instability of long-wavelength perturbations occurs
at values of the solution flow intensity less than some critical value
depending on the step velocity. At given intensity of the solution flow, the
instability comes ... | 1995-12-06 | 2009-10-28 | [
"cond-mat"
] | Serge Yu. Potapenko (Institute of Applied Physics, Russian Academy of
Sciences) |
cond-mat/9512034 | Quantization of Superflow Circulation and Magnetic Flux with a Tunable
Offset | Quantization of superflow-circulation and of magnetic-flux are considered for
systems, such as superfluid $^3$He-A and unconventional superconductors, having
nonscalar order parameters. The circulation is shown to be the anholonomy in
the parallel transport of the order parameter. For multiply-connected samples
free of... | 1995-12-05 | 2009-10-28 | [
"cond-mat"
] | Yuli Lyanda-Geller, Paul M. Goldbart, Daniel Loss |
cond-mat/9512029 | Atomic exchange mean field study of intermixing of Au on Ag(110) | A mean field method to study heteroepitaxial thin film growth is applied to
growth, intermixing and surface reconstructions of $Au$ on $Ag(110)$. The
results are in accordance with experimentally observed ``burrowing'' at
submonolayer coverages and growth of elongated, $(1 \times 3)$ reconstructed,
$Au$ clusters at hig... | 1995-12-05 | 2009-10-28 | [
"cond-mat"
] | J. A. Nieminen |
cond-mat/9512030 | Stochastic Model for the Motion of a Particle on an Inclined Rough Plane
and the Onset of Viscous Friction | Experiments on the motion of a particle on an inclined rough plane have
yielded some surprising results. For example, it was found that the frictional
force acting on the ball is viscous, {\it i.e.} proportional to the velocity
rather than the expected square of the velocity. It was also found that, for a
given inclina... | 1995-12-05 | 2009-10-28 | [
"cond-mat"
] | G. G. Batrouni, S. Dippel, L. Samson |
cond-mat/9512033 | Phase Diagram for Charge Density Waves in a Magnetic Field | The influence of an external magnetic field on a quasi one-dimensional system
with a charge density wave (CDW) instability is treated within the random phase
approximation which includes both CDW and spin density wave correlations. We
show that the CDW is sensitive to both orbital and Pauli effects of the field.
In the... | 1995-12-05 | 2009-10-28 | [
"cond-mat"
] | D. Zanchi, A. Bjeli\v{s} and G. Montambaux |
cond-mat/9512028 | Phonon Localization in One-Dimensional Quasiperiodic Chains | Quasiperiodic long range order is intermediate between spatial periodicity
and disorder, and the excitations in 1D quasiperiodic systems are believed to
be transitional between extended and localized. These ideas are tested with a
numerical analysis of two incommensurate 1D elastic chains: Frenkel-Kontorova
(FK) and Le... | 1995-12-05 | 2009-10-28 | [
"cond-mat"
] | S.E. Burkov (1), B.E.C. Koltenbah (2), and L.W. Bruch (2) ((1) Bilbo
Innovations, Inc., Sunnyvale, CA, (2) Department of Physics, University of
Wisconsin-Madison) |
cond-mat/9512031 | Thermal noise in superconducting quantum point-contacts | We present a theory for the frequency-dependent current fluctuations in
superconducting quantum point-contacts (SQPC) within the dc transport regime.
This theory is valid for any barrier transparency between the tunnel and
ballistic limits, yielding an analytical expression for the fluctuations
spectrum in the subgap r... | 1995-12-05 | 2009-10-28 | [
"cond-mat"
] | A. Martin-Rodero, A. Levy Yeyati, and F.J. Garcia-Vidal |
cond-mat/9512032 | Modeling Thermal Fluctuations: Phase Mixing and Percolation | We consider the nonequilibrium dynamics of a a real scalar field in a
degenerate double-well potential. The system is prepared in the lowest free
energy state in one of the wells and the dynamics is driven by the coupling of
the field to a thermal bath. Using a simple analytical model, based on the
subcritical bubbles ... | 1995-12-05 | 2009-10-28 | [
"cond-mat",
"astro-ph",
"hep-ph",
"hep-th"
] | Marcelo Gleiser, Andrew F. Heckler, and Edward W. Kolb |
cond-mat/9512022 | Coulomb Charging at Large Conduction | We discuss the suppression of Coulomb charging effects on a small metallic
island coupled to an electrode by a tunnel junction. At high temperatures the
quantum corrections to the classical charging energy $E_c=e^2/2C$, where $C$ is
the island capacitance, are evaluated. At low temperatures the large quantum
fluctuatio... | 1995-12-04 | 2015-06-25 | [
"cond-mat"
] | Xiaohui Wang and Hermann Grabert |
cond-mat/9512020 | Optical properties of the vibrations in charged C$_{60}$ molecules | The transition strengths for the four infrared-active vibrations of charged
C$_{60}$ molecules are evaluated in self-consistent density functional theory
using the local density approximation. The oscillator strengths for the second
and fourth modes are strongly enhanced relative to the neutral C$_{60}$
molecule, in go... | 1995-12-04 | 2009-10-28 | [
"cond-mat"
] | Arthur P. Smith and George F. Bertsch |
cond-mat/9512025 | Quantitative Characterization of Permeability Fluctuations in Sandstone | Sedimentary rocks have complicated permeability fluctuations arising from the
geological processes that formed them. These permeability fluctuations
significantly affect the flow of fluids through the rocks. We analyze data on
two sandstone samples from different geological environments, and find that the
permeability ... | 1995-12-04 | 2007-05-23 | [
"cond-mat"
] | Hern\'an A. Makse, Glenn W. Davies, Shlomo Havlin, Plamen Ch. Ivanov,
Peter R. King, H. E. Stanley |
cond-mat/9512017 | A study of fragmentation processes using a discrete element method | We present a model of solids made from polygonal cells connected via beams.
We calculate the macroscopic elastic moduli from the beam and cell parameters.
This modellisation is particularly suited for the simulation of fragmentation
processes. We study the effects of an explosion inside a circular disk and the
impact o... | 1995-12-04 | 2015-06-25 | [
"cond-mat"
] | Ferenc Kun and Hans J. Herrmann (PMMH,ESPCI, Paris) |
cond-mat/9512026 | Spin dynamics of SrCu$_2$O$_3$ and the Heisenberg ladder | The $S=1/2$ Heisenberg antiferromagnet in the ladder geometry is studied as a
model for the spin degrees of freedom of SrCu$_2$O$_3$. The susceptibility and
the spin echo decay rate are calculated using a quantum Monte Carlo technique,
and the spin-lattice relaxation rate is obtained by maximum entropy analytic
continu... | 1995-12-04 | 2009-10-28 | [
"cond-mat"
] | A. W. Sandvik, E. Dagotto, and D. J. Scalapino |
cond-mat/9512023 | Effects of intrabilayer coupling on the magnetic properties of
YBa$_2$Cu$_3$O$_6$ | A two-layer Heisenberg antiferromagnet is studied as a model of the bilayer
cuprate YBa$_2$Cu$_3$O$_6$. Quantum Monte Carlo results are presented for the
temperature dependence of the spin correlation length, the static structure
factor, the magnetic susceptibility, and the $^{63}$Cu NMR spin-echo decay rate
$1/T_{2G}$... | 1995-12-04 | 2009-10-28 | [
"cond-mat"
] | A. W. Sandvik and D. J. Scalapino |
cond-mat/9512018 | The Superconducting Instabilities of the non half-filled Hubbard Model
in Two Dimensions | The problem of weakly correlated electrons on a square lattice is formulated
in terms of one-loop renormalization group. Starting from the action for the
entire Brillouin zone (and not with a low-energy effective action) we reduce
successively the cutoff $\Lambda$ about the Fermi surface and follow the
renormalization ... | 1995-12-04 | 2009-10-28 | [
"cond-mat"
] | D. Zanchi and H. J. Schulz |
cond-mat/9512019 | Entropic Barriers, Frustration and Order: Basic Ingredients in Protein
Folding | We solve a model that takes into account entropic barriers, frustration, and
the organization of a protein-like molecule. For a chain of size $M$, there is
an effective folding transition to an ordered structure. Without frustration,
this state is reached in a time that scales as $M^{\lambda}$, with
$\lambda\simeq 3$. ... | 1995-12-04 | 2009-10-28 | [
"cond-mat",
"chem-ph",
"q-bio"
] | Carlos J. Camacho (Facultad de Fisica, P. Universidad Catolica de
Chile, Santiago) |
cond-mat/9512021 | Study of Scaling in the Fractional Quantum Hall Effect | In the composite fermion model of the fractional quantum Hall effect,
composite fermions experience, in addition to the usual potential disorder,
also a magnetic flux disorder. Motivated by this, we investigate the
localization properties of a single fermion in two dimensions, moving in the
presence of both potential a... | 1995-12-04 | 2015-06-25 | [
"cond-mat"
] | X.C. Xie, D.Z. Liu, and J.K. Jain |
cond-mat/9512024 | Method for Generating Long-Range Correlations for Large Systems | We propose a new method to generate a sequence of random numbers with
long-range power-law correlations that overcomes known difficulties associated
with large systems. The new method presents an improvement on the commonly-used
methods. We apply the algorithm to generate enhanced diffusion, isotropic and
anisotropic s... | 1995-12-04 | 2009-10-28 | [
"cond-mat"
] | Hern\'an A. Makse, Shlomo Havlin, Moshe Schwartz, and H. Eugene
Stanley |
cond-mat/9512027 | Elastic String in a Random Medium | We consider a one dimensional elastic string as a set of massless beads
interacting through springs characterized by anisotropic elastic constants. The
string, driven by an external force, moves in a medium with quenched disorder.
We present evidence that the consideration of longitudinal fluctuations leads
to nonlinea... | 1995-12-04 | 2009-10-28 | [
"cond-mat"
] | Hern\'an A. Makse, Albert-L\'aszl\'o Barab\'asi, and H. Eugene Stanley |
cond-mat/9512015 | Transition from Integer Quantum Hall State to Insulator | We study disorder induced transition between quantum Hall states and
insulator state in a {\it lattice} model. We find the positions of the extended
states do not change as disorder strength is varied. As a consequence, there
are direct transitions from all Landau level quantum Hall states to insulator
states, in contr... | 1995-12-04 | 2009-10-28 | [
"cond-mat"
] | X.C. Xie and D.Z. Liu |
cond-mat/9512014 | A multispecies Calogero-Sutherland model | Motivated by the concept of ideal mutual statistics, we study a multispecies
Calogero-Sutherland model in which the interaction parameters and masses
satisfy some specific relations. The ground state is exactly solvable if those
relations hold, both on a circle and on a line with a simple harmonic
potential. In the lat... | 1995-12-04 | 2009-10-28 | [
"cond-mat",
"hep-th"
] | Diptiman Sen (Indian Institute of Science, Bangalore) |
cond-mat/9512013 | Non-collinear magnetism in Al-Mn topologically disordered systems | We have performed the first ab-initio calculations of a possible complex
non-collinear magnetic structure in aluminium-rich Al-Mn liquids within the
real-space tight-binding LMTO method. In our previous work we predicted the
existence of large magnetic moments in Al-Mn liquids [A.M. Bratkovsky, A.V.
Smirnov, D. N. Manh... | 1995-12-03 | 2009-10-28 | [
"cond-mat",
"mtrl-th"
] | A.V. Smirnov and A.M. Bratkovsky (TH Darmtadt; Department of
Materials, Oxford) |
cond-mat/9512016 | The chemical potential of the electron gas on a one dimensional lattice | The chemical potential of the electron gas on a one-dimensional lattice is
determined within the discrete Hubbard model. The result will have applications
in studies of transport properties of quasi one-dimensional organic conductors
such as the Bechgaard salts. | 1995-12-02 | 2007-05-23 | [
"cond-mat"
] | V.Celebonovic ( Inst.of Physics,Beograd,Yugoslavia) |
cond-mat/9512010 | The Magnus Force on Skyrmions in Ferromagnets and the Quantum Hall
Effect | The topological solitons, or ``skyrmions'', in a planar ferromagnet
experience a Magnus force proportional to the product of their velocity and the
surrounding magnetization. It has been suggested that the charged
quasiparticles near filling factor $\nu=1$ in the $GaAs$ quantum Hall effect
are skyrmions. If so we might... | 1995-12-02 | 2016-08-31 | [
"cond-mat"
] | Michael Stone |
cond-mat/9512009 | A new class of collective excitations of the Hubbard model I: $\eta$
excitation of the negative--$U$ model | In this series of papers we present a detailed study of the
particle--particle collective excitations of the Hubbard model, and their
contribution to the density and spin excitation spectrum. In the first paper,
we shall investigate the singlet particle--particle pair with momentum
$(\pi,\pi)$, the $\eta$ particle, of ... | 1995-12-02 | 2009-10-28 | [
"cond-mat"
] | Eugene Demler, Shou-Cheng Zhang, Nejat Bulut and Douglas J. Scalapino |
cond-mat/9512008 | Bose Condensate made of Atoms with Attractive Interaction is Metastable | Recent experiments with trapped cooled atoms have produced evidences for
Bose-Einstein condensation. Among the atoms used are $^7Li$ ones, with
attractive low energy interaction. Stability of their condensate is studied,
with a conclusion that for a number of atoms below the critical value there
exist a metastable mi... | 1995-12-01 | 2016-08-31 | [
"cond-mat"
] | E.V.Shuryak (Department of Physics, State Univ of NY at Stony Brook) |
cond-mat/9512007 | The Non Linear Sigma Model and Spin Ladders | The well known Haldane map from spin chains into the $O(3)$ non linear sigma
model is generalized to the case of spin ladders. This map allows us to explain
the different qualitative behaviour between even and odd ladders, exactly in
the same way it explains the difference between integer and half-integer spin
chains. ... | 1995-12-01 | 2008-11-26 | [
"cond-mat",
"hep-th"
] | German Sierra |
cond-mat/9512005 | Lattice-gas model for alkali-metal fullerides: body-centered-cubic
structure | A Coulomb lattice-gas model with a host lattice screening mechanism is
adapted to describe the ordering phenomena in alkali-metal fullerides of
body-centered-cubic structure. It is assumed that the electric charge of an
alkali ion residing at a tetrahedral interstitial site is completely screened
by its first-neighbor ... | 1995-12-01 | 2009-10-28 | [
"cond-mat"
] | Gyorgy Szabo and Laszlo Udvardi |
cond-mat/9512003 | The Quantization process for the Driven Quantum Well - Perturbative
Expansion and the Classical Limit | We consider the quantum mechanical behavior of a driven particle in an
infinite 1D potential well. We show that the time dependent perturbation series
is induced by the delicate non-trivial properties of the momentum operator in
this case, namely, its non-self-adjointness. Using this expansion, we calculate
the first o... | 1995-12-01 | 2008-02-03 | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | Eli Eisenberg, Nadav Shnerb and Rachel Avigur |
cond-mat/9512004 | Branching Interfaces with Infinitely Strong Couplings | A hierarchical froth model of the interface of a random $q$-state Potts
ferromagnet in $2D$ is studied by recursive methods. A fraction $p$ of the
nearest neighbour bonds is made inaccessible to domain walls by infinitely
strong ferromagnetic couplings. Energetic and geometric scaling properties of
the interface are co... | 1995-12-01 | 2009-10-28 | [
"cond-mat"
] | Giovanni Sartoni (Dipartimento di Fisica and Sezione INFN, Universita
di Bologna, Italy) and Attilio L. Stella (INFM--Dipartimento di Fisica and
Sezione INFN, Universita di Padova, Italy) |
cond-mat/9512006 | Moving glass phase of driven lattices | We study periodic lattices, such as vortex lattices, driven by an external
force in a random pinning potential. We show that effects of static disorder
persist even at large velocity. It results in a novel moving glass state with
topological order analogous to the static Bragg glass. The lattice flows
through well-defi... | 1995-12-01 | 2009-10-28 | [
"cond-mat"
] | Thierry Giamarchi and Pierre Le Doussal |
cond-mat/9512002 | Entropy derivation for cluster methods in non-Bravais lattices | The derivation of entropy for cluster methods is reformulated by constructing
the probability of a given particle (spin) configuration as a self-consistent
product of cluster configuration probabilities. This approach gives an insight
into the nature of underlying approximations involved at different levels of
the clus... | 1995-12-01 | 2007-05-23 | [
"cond-mat"
] | Gyorgy Szabo |
cond-mat/9512001 | Lattice-gas model for alkali-metal fullerides: face-centered-cubic
structure | A lattice-gas model is suggested for describing the ordering phenomena in
alkali-metal fullerides of face-centered-cubic structure assuming the electric
charge of alkali ions residing in either octahedral or tetrahedral interstitial
sites is completely screened by the first-neighbor C_60 molecules. This
approximation a... | 1995-12-01 | 2009-10-28 | [
"cond-mat"
] | Laszlo Udvardi and Gyorgy Szabo |
cond-mat/9511140 | Duality and Universality for the Chern-Simons bosons | By mapping the relativistic version of the Chern-Simons-Landau-Ginzburg
theory in 2+1 dimensions to the 3D lattice Villain x-y model coupled with the
Chern-Simons gauge field, we investigate phase transitions of Chern-Simons
bosons in the limit of strong coupling. We construct algebraically exact
duality and flux attac... | 1995-11-30 | 2008-12-18 | [
"cond-mat"
] | Leonid P. Pryadko and Shou-Cheng Zhang (Stanford University) |
cond-mat/9511138 | Fermi surface evolution in underdoped cuprates | We consider a two-dimensional Fermi liquid coupled to low-energy commensurate
spin fluctuations. At small coupling, the hole Fermi surface is large and
centered around $(\pi,\pi)$. We show that as the coupling increases, the shape
of the Fermi surface undergoes a substantial evolution, and at strong coupling,
the hole ... | 1995-11-30 | 2008-02-03 | [
"cond-mat"
] | Andrey V. Chubukov, Dirk K. Morr and Konstantin A. Shakhnovich |
cond-mat/9511139 | The gap symmetry is marginal in high-Tc superconductivity: Isotropic
s-wave pairing leads to either s or d-wave gap depending on the Coulomb
pseudopotential | We point out that in two-dimensional systems like high-$T_c$ superconductors,
an isotropic s-wave electron-phonon interaction in the momentum decoupling
regime leads to either s or d-wave superconductivity depending on the
conventional values of the Coulomb pseudopotential. It is therefore possible
that $YBa_2Cu_3O_7$ ... | 1995-11-30 | 2007-05-23 | [
"cond-mat"
] | G. Varelogiannis |
cond-mat/9512012 | Resonant Pair Tunneling and Singular effects of c-axis disorder in
cuprates and organic superconductors | In the interlayer pair tunneling (ILPT) theory of superconductivity the large
scale $T_c$ has its origin in the k-space locality of the inter layer pair
tunneling matrix elements. We reinterpret the same physics as a process of
resonant pair tunneling and illustrate it through cooper pair analysis. This
interpretation ... | 1995-11-30 | 2007-05-23 | [
"cond-mat"
] | G. Baskaran |
cond-mat/9511137 | Anisotropic optical response of the diamond (111)-2x1 surface | The optical properties of the 2$\times$1 reconstruction of the diamond (111)
surface are investigated. The electronic structure and optical properties of
the surface are studied using a microscopic tight-binding approach. We
calculate the dielectric response describing the surface region and investigate
the origin of t... | 1995-11-29 | 2009-10-28 | [
"cond-mat"
] | Cecilia Noguez and Sergio E. Ulloa (Ohio University) |
cond-mat/9511134 | Comments on PPPM, FMM, and the Ewald Method for Large Periodic Coulombic
Systems | The three most common methods, Ewald, fast multipole (FMM) and the
particle-particle particle-mesh (PPPM), used to compute the interactions in
many body Coulombic systems are compared for single and multi-processor
machines. The Ewald method is recommended for systems of a few hundred
particles per processor or less. F... | 1995-11-29 | 2009-10-28 | [
"cond-mat"
] | E. L. Pollock and Jim Glosli |
cond-mat/9511135 | Magnetic Structure of Rare-Earth Nickel Boride-Carbides | We present a theory of the magnetic rare-earth nickel boride-carbides
(RENi$_2$B$_2$C, RE=Ho, Er, Tm). Large total angular momentum allows one to
employ semiclassical approximation and reduce the problem to the
four-positional clock model. The latter gives a proper phase diagram in
magnetic field-magnetic moment plane ... | 1995-11-29 | 2008-02-03 | [
"cond-mat"
] | V.A. Kalatsky and V.L. Pokrovsky |
cond-mat/9511136 | Composite fermion theory of collective excitations in fractional quantum
Hall effect | The low energy neutral excitations of incompressible fractional quantum Hall
states are called collective modes or magnetic excitons. This work develops
techniques for computing their dispersion at general filling fractions for
reasonably large systems. New structure is revealed; in particular, the
collective mode at 1... | 1995-11-29 | 2009-10-28 | [
"cond-mat"
] | R.K. Kamilla, X.G. Wu, and J.K. Jain (Department of Physics, State
University of New York at Stony Brook, Stony Brook, New York) |
cond-mat/9512011 | Are light alkali metals still metals under high pressure? | The extended Hubbard Hamiltonian on a bcc lattice is studied at half-filling
and for a finite hopping between next-nearest-neighbours, in mean-field
approximation. An ionic insulating broken-symmetry phase is predicted for any
hydrogenoid bcc solid in the density range 1.0 < r sub s < 2.6. The occurrence
of an ionic ph... | 1995-11-29 | 2007-05-23 | [
"cond-mat"
] | Fabio Siringo, Renato Pucci and Giuseppe G.N. Angilella |
cond-mat/9511131 | Temporal Fluctuations in Nematic Liquid Crystals | We use a set of simplified non-linear Langevin equations to study the
hydrodynamic excitations in a nematic liquid crystal. We calculate the one-loop
self-energy corrections in the long wavelength limit. | 1995-11-28 | 2008-02-03 | [
"cond-mat"
] | Gu Yan and Tom C. Lubensky (Department of Physics, University of
Pennsylvania) |
cond-mat/9511132 | Critical Properties of the One-Dimensional Forest-Fire Model | The one-dimensional forest-fire model including lightnings is studied
numerically and analytically. For the tree correlation function, a new
correlation length with critical exponent \nu ~ 5/6 is found by simulations. A
Hamiltonian formulation is introduced which enables one to study the stationary
state close to the c... | 1995-11-28 | 2015-02-24 | [
"cond-mat",
"adap-org",
"nlin.AO"
] | A. Honecker and I. Peschel |
cond-mat/9511133 | Magnetic Field Dependence of the Level Spacing of a Small Electron
Droplet | The temperature dependence of conductance resonances is used to measure the
evolution with the magnetic field of the average level spacing $\Delta\epsilon$
of a droplet containing $\sim 30$ electrons created by lateral confinement of a
two-dimensional electron gas in GaAs. $\Delta\epsilon$ becomes very small ($<
30\mu$... | 1995-11-28 | 2009-10-28 | [
"cond-mat"
] | O. Klein, D. Goldhaber-Gordon, C. de C. Chamon, and M.A. Kastner |
cond-mat/9511128 | Supercurrent noise in quantum point contacts | Spectral density of current fluctuations in a short ballistic superconducting
quantum point contact is calculated for arbitrary bias voltages $V$. Contrary
to a common opinion that the supercurrent flow in Josephson junctions is
coherent process with no fluctuations, we find extremely large current noise
that is {\em c... | 1995-11-27 | 2009-10-28 | [
"cond-mat"
] | D. Averin and H. Imam (Department of Physics, State University of New
York at Stony Brook) |
cond-mat/9511129 | Brownian Motion of Solitons in the $\Phi^4$ Model | We derive an expression for the correlation function of the random force on a
soliton which is consistent with the constraints needed to integrate out the
zero modes which appear due to the broken translational symmetry of the soliton
solution. It is shown that when the constraint does not commute with the
operator whi... | 1995-11-27 | 2015-06-25 | [
"cond-mat",
"hep-th"
] | Fermin Aldabe |
cond-mat/9511124 | Multi-interaction mean-field renormalization group | We present an extension of the previously proposed mean-field renormalization
method to model Hamiltonians which are characterized by more than just one type
of interaction. The method rests on scaling assumptions about the magnetization
of different sublattices of the given lattice and it generates as many flow
equati... | 1995-11-27 | 2016-08-31 | [
"cond-mat"
] | C.N. Likos and A. Maritan |
cond-mat/9511125 | Multimode electron-phonon interactions in the 2-dimensional t-J-Holstein
model | Polaronic effects are investigated in the two dimensional t--J model
(describing Cu spins and holes of the planes in high-$T_c$ cuprates) in the
presence of in-plane dynamic oxygen breathing modes. We focus on the effect of
dynamic multi-phonon modes. Spin and charge structure factors are computed. We
found evidence fo... | 1995-11-27 | 2008-02-03 | [
"cond-mat"
] | D. Poilblanc, T. Sakai, D.J. Scalapino and W. Hanke |
cond-mat/9511126 | Topology and dynamics in ferromagnetic media | A direct link between the topological complexity of ferromagnetic media and
their dynamics has recently been established through the construction of
unambiguous conservation laws as moments of a topological vorticity. In the
present paper we carry out this program under completely realistic conditions,
with due account... | 1995-11-27 | 2015-06-25 | [
"cond-mat"
] | S. Komineas, N. Papanicolaou (University of Crete) |
cond-mat/9511130 | Superconducting state properties of a d-wave superconductor with mass
anisotropy | YBa$_2$Cu$_3$O$_7$ (YBCO) exhibits a large anisotropy between the $a$ and $b$
axes in the CuO$_2$ planes because of the presence of CuO chains. In order to
account for such an anisotropy we develop a Ginzburg-Landau (GL) theory for an
anisotropic d-wave superconductor in an external magnetic field, based on an
anisotro... | 1995-11-27 | 2007-05-23 | [
"cond-mat"
] | Ji-Hai Xu, Yong Ren, and C. S. Ting |
cond-mat/9511127 | Efficient Peltier refrigeration by a pair of normal metal/
insulator/superconductor junctions | We suggest and demonstrate in experiment that two normal metal /insulator/
superconductor (NIS) tunnel junctions combined in series to form a symmetric
SINIS structure can operate as an efficient Peltier refrigerator. Specifically,
it is shown that the SINIS structure with normal-state junction resistances 1.0
and 1.1 ... | 1995-11-27 | 2009-10-28 | [
"cond-mat"
] | M.M. Leivo, J.P. Pekola, and D.V. Averin |
cond-mat/9511123 | Spin-flip scattering in the quantum Hall regime | We present a microscopic theory of spin-orbit coupling in the integer quantum
Hall regime. The spin-orbit scattering length is evaluated in the limit of
long-range random potential. The spin-flip rate is shown to be determined by
rare fluctuations of anomalously high electric field. A mechanism of strong
spin-orbit sca... | 1995-11-26 | 2009-10-28 | [
"cond-mat"
] | D. G. Polyakov |
cond-mat/9511122 | Phase Diagram of $S=1$ Bond-Alternating XXZ chains | The phase transitions between the XY, the dimer and the Haldane phases of the
spin-1 bond-alternating XXZ chain are studied by the numerical diagonalization.
We determine the phase diagram at $T=0$ and also identify the universality
class with the level spectroscopy. We find that exactly on $\Delta=0$ there is
a Berezi... | 1995-11-25 | 2009-10-28 | [
"cond-mat"
] | Atsuhiro Kitazawa, Kiyohide Nomura and Kiyomi Okamoto |
cond-mat/9511119 | Aharonov-Bohm oscillations and resonant tunneling in strongly correlated
quantum dots | We investigate Aharonov-Bohm oscillations of the current through a strongly
correlated quantum dot embedded in an arbitrary scattering geometry.
Resonant-tunneling processes lead to a flux-dependent renormalization of the
dot level. As a consequence we obtain a fine structure of the current
oscillations which is contro... | 1995-11-24 | 2009-10-28 | [
"cond-mat"
] | C. Bruder, Rosario Fazio, and Herbert Schoeller |
cond-mat/9511121 | Critical Properties of Random Quantum Potts and Clock Models | We study zero temperature phase transitions in two classes of random quantum
systems -the $q$-state quantum Potts and clock models. For models with purely
ferromagnetic interactions in one dimension, we show that for strong randomness
there is a second order transition with critical properties that can be
determined ex... | 1995-11-24 | 2009-10-28 | [
"cond-mat"
] | T. Senthil and Satya N. Majumdar (Yale University) |
cond-mat/9511120 | Renormalization group approach to Fermi Liquid Theory | We show that the renormalization group (RG) approach to interacting fermions
at one-loop order recovers Fermi liquid theory results when the forward
scattering zero sound (ZS) and exchange (ZS$'$) channels are both taken into
account. The Landau parameters are related to the fixed point value of the
``unphysical'' limi... | 1995-11-24 | 2009-10-28 | [
"cond-mat"
] | N. Dupuis and G. Chitov |
cond-mat/9511118 | Ab-initio Molecular Dynamics study of electronic and optical properties
of silicon quantum wires: Orientational Effects | We analyze the influence of spatial orientation on the optical response of
hydrogenated silicon quantum wires. The results are relevant for the
interpretation of the optical properties of light emitting porous silicon. We
study (111)-oriented wires and compare the present results with those
previously obtained within t... | 1995-11-24 | 2011-10-25 | [
"cond-mat"
] | A.M.Saitta, F.Buda, G.Fiumara and P.V.Giaquinta |
cond-mat/9511115 | Conservation laws in the continuum $1/r^2$ systems | We study the conservation laws of both the classical and the quantum
mechanical continuum $1/r^2$ type systems. For the classical case, we introduce
new integrals of motion along the recent ideas of Shastry and Sutherland (SS),
supplementing the usual integrals of motion constructed much earlier by Moser.
We show by ex... | 1995-11-23 | 2016-08-15 | [
"cond-mat"
] | Rudolf A. R\"omer (JNCASR), B. Sriram Shastry (IISc) and B. Sutherland
(Utah) |
cond-mat/9511111 | Dimensional effects in photoelectron spectra of Ag deposits on GaAs(110)
surfaces | It is shown that the peak structure observed in angle-resolved photoelectron
spectra of metallic deposits can only be unambiguously associated to single
electronic states if the deposit has a two dimensional character (finite along
one spatial direction). In one and zero dimensions the density of states shows
peaks rel... | 1995-11-23 | 2009-10-28 | [
"cond-mat"
] | V. Gasparian, E. Louis and J.A. Verg\'es |
cond-mat/9511113 | Control of the finite size corrections in exact diagonalization studies | We study the possibility of controlling the finite size corrections in exact
diagonalization studies quantitatively. We consider the one- and two
dimensional Hubbard model. We show that the finite-size corrections can be be
reduced systematically by a grand-canonical integration over boundary
conditions. We find, in ge... | 1995-11-23 | 2009-10-28 | [
"cond-mat"
] | Claudius Gros |
cond-mat/9511110 | Coupled-barrier diffusion: the case of oxygen in silicon | Oxygen migration in silicon corresponds to an apparently simple jump between
neighboring bridge sites. Yet, extensive theoretical calculations have so far
produced conflicting results and have failed to provide a satisfactory account
of the observed $2.5$ eV activation energy. We report a comprehensive set of
first-pri... | 1995-11-23 | 2009-10-28 | [
"cond-mat"
] | Madhavan Ramamoorthy and Sokrates T. Pantelides (Department of Physics
and Astronomy, Vanderbilt University, Nashville, TN) |
cond-mat/9511114 | Sharp Photoemission Spactra in the Quantum Antiferromagnet | The low energy photoemission spectra in quantum antiferromagnets are studied
by using several approximation-free calculations and rigorous theorems. The
important and measurable property found is that the hole eigenstates with
momenta differing by the antiferromagnetic wavevector $Q$ are equivalent and
degenerate in en... | 1995-11-23 | 2007-05-23 | [
"cond-mat"
] | Sandro Sorella |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.