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/9401071 | Haldane exclusion statistics and second virial coefficient | We show that Haldanes new definition of statistics, when generalised to
infinite dimensional Hilbert spaces, is equal to the high temperature limit of
the second virial coefficient. We thus show that this exclusion statistics
parameter, g , of anyons is non-trivial and is completely determined by its
exchange statistic... | 1994-01-30 | 2009-10-22 | [
"cond-mat"
] | M.V.N.Murthy and R.Shankar (Institute of Mathematical Sciences,
Madras, India) |
cond-mat/9401070 | Strong-Coupling Behavior of Two $t-J$ Chains with Interchain Single
Electron Hopping | Using the fermion-spin transformation to implement spin-charge separation of
constrained electrons, a model of two $t-J$ chains with interchain
single-electron hopping is studied by abelian bosonization. After spin-charge
decoupling the charge dynamics can be trivially solved, while the spin dynamics
is determined by a... | 1994-01-29 | 2007-05-23 | [
"cond-mat"
] | G. M. Zhang, S. Feng, and L. Yu |
cond-mat/9401066 | Ground state energy and quasiparticle gaps in $\nu={N\over{2N\pm 1}}$
FQHE states | Applying the transformation of fermion operators to new fermion
quasiparticles introduced by Halperin, Lee, and Read we estimate a scaling
behavior of the ground state energy and quasiparticle gaps as a function of
filling fraction for a "principal sequence" of FQHE $\nu={N\over{2N\pm 1}}$
states converging towards the... | 1994-01-28 | 2009-10-22 | [
"cond-mat"
] | D.V.Khveshchenko |
cond-mat/9401069 | Towards a theory of growing surfaces: Mapping two-dimensional Laplacian
growth onto Hamiltonian dynamics and statistics | I show that the evolution of a two dimensional surface in a Laplacian field
can be described by Hamiltonian dynamics. First the growing region is mapped
conformally to the interior of the unit circle, creating in the process a set
of mathematical zeros and poles that evolve dynamically as the surface grows.
Then the dy... | 1994-01-28 | 2008-02-03 | [
"cond-mat",
"nlin.PS",
"patt-sol"
] | Raphael Blumenfeld (CNLS, Los Alamos Nat'l Lab., Los Alamos, NM) |
cond-mat/9401068 | Two-dimensional Laplacian growth can be mapped onto Hamiltonian dynamics | It is shown that the dynamics of the growth of a two dimensional surface in a
Laplacian field can be mapped onto Hamiltonian dynamics. The mapping is carried
out in two stages: first the surface is conformally mapped onto the unit
circle, generating a set of singularities. Then the dynamics of these
singularities are t... | 1994-01-28 | 2009-10-22 | [
"cond-mat",
"nlin.PS",
"patt-sol"
] | Raphael Blumenfeld (Princeton Materials Institute, Princeton
University) |
cond-mat/9401067 | Quantum and Many-Body Effects on the Capacitance of a Quantum Dot | We calculate exactly, using finite size techniques, the quantum mechanical
and many-body effects to the self-capacitance of a spherical quantum dot in the
regime of extreme confinement, where the radius of the sphere is much smaller
than the effective Bohr radius. We find that the self-capacitance oscillates as
a funct... | 1994-01-28 | 2009-10-22 | [
"cond-mat"
] | Lotfi Belkhir |
cond-mat/9401063 | Cluster mechanisms in the fully frustrated Ising model | The cluster algorithm in the fully frustrated Ising model on the square
lattice is essentially different from the ones used in other systems. Thus its
better understanding is particularly important for finding new lines of
development. Therefore we investigate it in detail. In our simulations of high
statistics more ap... | 1994-01-27 | 2009-10-22 | [
"cond-mat",
"hep-lat"
] | Werner Kerler and Peter Rehberg |
cond-mat/9401064 | Strong-Correlations Versus U-Center Pairing and Fractional Aharonov-Bohm
Effect | The influence of the interaction between electrons on the Aharonov-Bohm
effect is investigated in the framework of the Hubbard model. The repulsion
between electrons associated with strong correlation is compared with the case
of attraction such as $U$-center pairing. The most interesting case, when two
electrons are l... | 1994-01-27 | 2009-10-22 | [
"cond-mat"
] | F.V.Kusmartsev, J.F. Weisz, R. Kishore and Minoru Takahashi |
cond-mat/9401065 | Proximity Effect and Charging in Mesoscopic Normal Metal -
Superconductor Junction Systems | Charging effects in mesoscopic junctions suppress the tunneling of electrons.
In normal metal - superconductor systems they also suppress the proximity
effect, thereby revealing the nature of the microscopic processes and of the
ground state of the system. The effect can be made visible since the charging
and proximity... | 1994-01-27 | 2015-06-25 | [
"cond-mat"
] | C. Bruder, Rosario Fazio, and Gerd Sch\"on |
cond-mat/9401059 | Asymptotically exact solution of the multi-channel resonant-level model | An asymptotically exact partition function of the multi-channel
resonant-level model is obtained through Tomonaga-Luttinger bosonization. A
Fermi-liquid vs non-Fermi-liquid transition, resulting from a competition
between the Kondo and X-ray edge physics, is elucidated explicitly via the
renormalization group theory. I... | 1994-01-26 | 2009-10-22 | [
"cond-mat"
] | G. M. Zhang, Z. B. Su, and L. Yu |
cond-mat/9401056 | Kinetics of Macrostep Under Diffusion and Thermal Interactions in
Stagnant Media | The step motions considered are those in which crystallization is controlled
by a single diffusion process, either the substance diffusion for growth from
solution or the flow of latent heat from the step for growth from melt.
Quasi-static diffusion nearby two parallel steps and nearby a train of parallel
steps is cons... | 1994-01-26 | 2009-10-22 | [
"cond-mat"
] | Serge Yu. Potapenko |
cond-mat/9401062 | Low Temperature Properties of Anisotropic Superconductors with Kondo
Impurities | We present a self-consistent theory of superconductors in the presence of
Kondo impurities, using large-$N$ slave-boson methods to treat the impurity
dynamics. The technique is tested on the s-wave case and shown to give good
results compared to other methods for $T_K > T_c$. We calculate low temperature
thermodynamic ... | 1994-01-26 | 2009-10-22 | [
"cond-mat"
] | L.S. Borkowski and P.J. Hirschfeld |
cond-mat/9401057 | Hartree Fock and RPA studies of the Hubbard model | The applicability of the Hartree-Fock and random phase approximations to
models of strongly correlated electrons is discussed. The 2D Hubbard model is
analyzed. An antiferromagnetic phase (at half filling) and Fermi liquid
behavior (at low electron densities) are found. In addition, the system shows
an unconventional r... | 1994-01-26 | 2007-05-23 | [
"cond-mat"
] | F. Guinea, E. Louis and J. A. Verges |
cond-mat/9401061 | Singular Shape of a Fluid Drop in an Electric or Magnetic Field | Beyond a threshold, electric or magnetic fields cause a dielectric or
ferromagnetic fluid drop respectively to develop conical tips. We analyze the
appearance of the conical tips and the associated shape transition of the drop
using a local force balance as well as a global energy argument. We find that a
conical inter... | 1994-01-26 | 2009-10-22 | [
"cond-mat"
] | Hao Li, Thomas C. Halsey, and Alexander Lobkovsky (The James Franck
Institute and Department of Physics, University of Chicago) |
cond-mat/9401060 | Optical conductivity of the Hubbard model at finite temperature | The optical conductivity, $\sigma(\omega)$, of the two dimensional one-band
Hubbard model is calculated at finite temperature using exact diagonalization
techniques on finite clusters. The in-plane d.c. resistivity, $\rho_{ab}$, is
also evaluated. We find that at large U/t and temperature T, $\rho_{ab}$ is
approximatel... | 1994-01-26 | 2009-10-22 | [
"cond-mat"
] | Jose A. Riera and Elbio Dagotto |
cond-mat/9401058 | Relation between the Correlation Dimensions of Multifractal
Wavefunctions and Spectral Measures in Integer Quantum Hall Systems | We study the time evolution of wavepackets of non-interacting electrons in a
two-dimensional disordered system in strong magnetic field. For wavepackets
built from states near the metal-insulator transition in the center of the
lowest Landau band we find that the return probability to the origin $p(t)$
decays algebraic... | 1994-01-26 | 2009-10-22 | [
"cond-mat"
] | B. Huckestein, L. Schweitzer |
cond-mat/9401052 | Curie Temperatures for Binary Ising Ferromagnets on the Square Lattice | High-accuracy Swendsen and Wang Monte Carlo simulations were performed to
study the Curie temperature of ferromagnetic, binary Ising systems on the
square lattice. Our results are compared with mean-field like approaches. Based
on these former theories, we give a new formula to estimate the Curie
temperature of the sys... | 1994-01-25 | 2007-05-23 | [
"cond-mat"
] | Zoltan Neda |
cond-mat/9401053 | Numerical Study of the $S=1$ Antiferrromagnetic Spin Chain with Bond
Alternation | We study the $S=1$ quantum spin chain with bond alternation ${\cal H}=\sum _i
(1-(-1)^i\delta)\vect{S}_i\cdot \vect{S}_{i+1}$ by the density matrix
renormalization group method recently proposed by Steven R. White
(\PRL{69}{3844}{1993}). We find a massless point at $\delta _c =0.25 \pm 0.01$.
We also find the edge stat... | 1994-01-25 | 2016-08-31 | [
"cond-mat"
] | Yusuke Kato and Akihiro Tanaka |
cond-mat/9401055 | Optical absorption spectra in fullerenes C60 and C70: Effects of Coulomb
interactions, lattice fluctuations, and anisotropy | Effects of Coulomb interactions and lattice fluctuations in the optical
absorption spectra of C60 and C70 are theoretically investigated by using a
tight binding model with long-range Coulomb interaction and bond disorder.
Anisotropy effects in C70 are also considered. Optical spectra are calculated
by using the Hartre... | 1994-01-25 | 2008-02-03 | [
"cond-mat"
] | Kikuo Harigaya and Shuji Abe (Fundamental Physics Section, Physical
Science Division, Electrotechnical Laboratory, Tsukuba, Ibaraki, Japan) |
cond-mat/9401054 | Variational Calculations for $^3$He Impurities on $^4$He Droplets | Variational Monte Carlo method is used to calculate ground state properties
of $^4$He droplets, containing 70, 112, 168, 240, 330, and 728 particles. The
resulting particle and kinetic energy densities are used as an input in the
Feynman-Lekner theory for $^3$He impurities. The kinetic energy density of
$^4$He atoms an... | 1994-01-25 | 2009-10-22 | [
"cond-mat"
] | A. Beli\'c, F. Dalfovo, S. Fantoni, and S. Stringari |
cond-mat/9401049 | Theory of Spin-Split Cyclotron Resonance in the Extreme Quantum Limit | We present an interpretation of recent cyclotron resonance experiments on the
two-dimensional electron gas in GaAs/AlGaAs heterostructures. We show that the
observed dependence of the resonance spectrum on Landau level occupancy and
temperature arises from the interplay of three factors: spin-splitting of the
cyclotron... | 1994-01-24 | 2011-08-05 | [
"cond-mat"
] | N.R. Cooper and J.T. Chalker |
cond-mat/9401051 | Quantum Integrable Systems in One Dimension | Talk presented at NATO Gran Finale Conference, Como, Italy, September 1993 | 1994-01-24 | 2015-06-25 | [
"cond-mat"
] | Michael Fowler |
cond-mat/9401050 | Pairing and Excitation Spectrum in doped t-J Ladders | Exact diagonalization studies for a doped t-J ladder (or double chain) show
hole pairing in the ground state. The excitation spectrum separates into a
limited number of quasiparticles which carry charge $+|e|$ and spin ${1 \over
2}$ and a triplet mode. At half-filling the former vanish but the latter
evolves continuous... | 1994-01-24 | 2007-05-23 | [
"cond-mat"
] | Hirokazu Tsunetsugu, Matthias Troyer, and T. Maurice Rice |
cond-mat/9401048 | Kinetic Roughening in Deposition with Suppressed Screening | Models of irreversible surface deposition of k-mers on a linear lattice, with
screening suppressed by disallowing overhangs blocking large gaps, are studied
by extensive Monte Carlo simulations of the temporal and size dependence of the
growing interface width. Despite earlier finding that for such models the
deposit d... | 1994-01-23 | 2010-10-12 | [
"cond-mat"
] | Peter Nielaba and Vladimir Privman |
cond-mat/9401045 | From Feynman's Wave Function to the Effective Theory of Vortex Dynamics | We calculate the overlap between two many-body wave functions for a
superfluid film containing a vortex at shifted positions. Comparing the results
to phenomenological theories, which treat vortices as point particles, we find
that the results are consistent if the point-particle vortices are considered
as under the ac... | 1994-01-21 | 2007-05-23 | [
"cond-mat"
] | Q. NIu, P. Ao, and D.J. Thouless |
cond-mat/9401046 | Transport and current reversal in stochastically driven ratchets | We present analytic results for the current in a system moving in an
arbitrary periodic potential and driven by weak Gaussian noise with an
arbitrary power spectrum which are valid to order (t_c/t_r)^2, where t_c is the
largest characteristic time of the noise, and t_r is the characteristic
intrawell relaxation time. T... | 1994-01-21 | 2009-10-22 | [
"cond-mat",
"adap-org",
"nlin.AO"
] | Mark M. Millonas and Mark I. Dykman |
cond-mat/9401047 | Order-Disorder Transition in a Two-Layer Quantum Antiferromagnet | We have studied the antiferromagnetic order -- disorder transition occurring
at $T=0$ in a 2-layer quantum Heisenberg antiferromagnet as the inter-plane
coupling is increased. Quantum Monte Carlo results for the staggered structure
factor in combination with finite-size scaling theory give the critical ratio
$J_c = 2.5... | 1994-01-21 | 2009-10-22 | [
"cond-mat"
] | A.W. Sandvik and D.J. Scalapino (Dept. of Physics, UC Santa Barbara) |
cond-mat/9401044 | From Feynman's Wave Function to the Effective Theory of Vortex Dynamics | We calculate the overlap between two many-body wave functions for a
superfluid film containing a vortex at shifted positions. Comparing the results
to phenomenological theories, which treat vortices as point particles, we find
that the results are consistent if the point-particle vortices are considered
as under the ac... | 1994-01-21 | 2009-10-22 | [
"cond-mat"
] | Q. Niu, P. Ao, and D. J. Thouless |
cond-mat/9401041 | Gauge Interactions and Bosonized Fermion Liquids | We investigate fermion liquids interacting with longitudinal and transverse
abelian gauge fields via bosonization. In two spatial dimensions we obtain the
fermion propagator for the specific case of a Coulomb plus Chern-Simons gauge
action. We discuss the relevance of this result to the Halperin-Lee-Read theory
of the ... | 1994-01-20 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | H.-J. Kwon, A. Houghton, and J. B. Marston (Brown University) |
cond-mat/9401042 | Impurities and Conductivity in a D-wave Superconductor | Impurity scattering in the unitary limit produces low energy quasiparticles
with anisotropic spectrum in a two-dimensional $d$-wave superconductor. We
describe a new {\em quasi-one-dimensional } limit of the quasiparticle
scattering, which might occur in a superconductor with short coherence length
and with {\em finite... | 1994-01-20 | 2007-05-23 | [
"cond-mat"
] | A.V. Balatsky |
cond-mat/9401043 | Defect Formation and Crossover Behavior in the Dynamic Scaling
Properties of Molecular Beam Epitaxy | Stochastic simulation results, appropriate for Molecular Beam Epitaxy,
involving ballistic deposition and thermally activated Arrhenius diffusion of
adatoms are presented for one- and two-dimensional substrates, allowing for
overhangs and bulk vacancies. The asymptotic Kardar-Parisi- Zhang universality
is found to be t... | 1994-01-20 | 2007-05-23 | [
"cond-mat"
] | S. DasSarma, C.J. Lanczycki, S.V. Ghaisas and J.M. Kim (Dept. of
Physics, Univ. of Maryland) |
cond-mat/9401039 | Non-Fermi-Liquid-Like Behavior in The Two-Dimensional t-J Model | The spin, charge and pairing correlation functions for the ground state of
two-dimensional $t-J$ model are calculated by using the power method which
projects out the ground state from a variational wave function. ``Exact''
results are obtained for $10\times10$ and $8\times8$ lattices with low particle
densities.
The... | 1994-01-19 | 2007-05-23 | [
"cond-mat"
] | Y. C. Chen and T. K. Lee |
cond-mat/9401037 | Coulomb Correlations and Instability of Spinless Fermion Gas in 1D and
2D | We study the stability of the ordinary Landau Fermi liquid phase for
interacting, spinless electrons. We require causality and demand that the Pauli
principle be obeyed. We find a phase diagram determined by two parameters: the
particle density and the interaction strength. We find that the homogeneous,
constant densit... | 1994-01-19 | 2015-06-25 | [
"cond-mat"
] | Hua Chen and Daniel Mattis (Department of Physics, University of Utah
Salt Lake City, Utah, USA) |
cond-mat/9401038 | Energy level statistics of electrons in a 2D quasicrystal | A numerical study is made of the spectra of a tight-binding hamiltonian on
square approximants of the quasiperiodic octagonal tiling. Tilings may be pure
or random, with different degrees of phason disorder considered. The level
statistics for the randomized tilings follow the predictions of random matrix
theory, while... | 1994-01-19 | 2009-10-22 | [
"cond-mat"
] | Frederic Piechon and Anuradha Jagannathan |
cond-mat/9401040 | Finite Temperature Properties of Quantum Antiferromagnets in a Uniform
Magnetic Field in One and Two Dimensions | Consider a $d$-dimensional antiferromagnet with a quantum disordered ground
state and a gap to bosonic excitations with non-zero spin. In a finite external
magnetic field, this antiferromagnet will undergo a phase transition to a
ground state with non-zero magnetization, describable as the condensation of a
dilute gas ... | 1994-01-19 | 2009-10-22 | [
"cond-mat"
] | Subir Sachdev, T. Senthil, and R. Shankar |
cond-mat/9401036 | A Nonlocal Contour Dynamics Model for Chemical Front Motion | Pattern formation exhibited by a two-dimensional reaction-diffusion system in
the fast inhibitor limit is considered from the point of view of interface
motion. A dissipative nonlocal equation of motion for the boundary between high
and low concentrations of the slow species is derived heuristically. Under
these dynami... | 1994-01-18 | 2009-10-22 | [
"cond-mat",
"nlin.PS",
"patt-sol"
] | Dean M. Petrich and Raymond E. Goldstein (Princeton University) |
cond-mat/9401033 | Effective action of a 2+1 dimensional system of nonrelativistic fermions
in the presence of a uniform magnetic field: dissipation effects | The effective action of nonrelativistic fermions in 2+1 dimensions is
analyzed at finite temperature and chemical potential in the presence of a
uniform magnetic field perpendicular to the plane. The method used is a
generalization of the derivative expansion technique. The induced Chern-Simons
term is computed and sho... | 1994-01-18 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | S. Sakhi |
cond-mat/9401035 | Concerning Order and Disorder in the Ensemble of Cu-O Chain Fragments in
Oxygen Deficient Planes of Y-Ba-Cu-O | In connection with numerous X-ray and neutron investigations of some high
temperature superconductors (YBa$_2$Cu$_3$O$_{6+x}$ and related compounds) a
non-trivial part of the structure factor, coming from partly disordered
Cu-O-$\dots$-O-Cu chain fragments, situated within basal planes, CuO$_x$, can
be a subject of the... | 1994-01-18 | 2009-10-22 | [
"cond-mat"
] | Gennadi Uimin |
cond-mat/9401034 | Domain Growth and Finite-Size-Scaling in the Kinetic Ising Model | This paper describes the application of finite-size scaling concepts to
domain growth in systems with a non-conserved order parameter. A finite-size
scaling ansatz for the time-dependent order parameter distribution function is
proposed, and tested with extensive Monte-Carlo simulations of domain growth in
the 2-D spin... | 1994-01-18 | 2009-10-22 | [
"cond-mat"
] | Nigel. B. Wilding, Christian Muenkel and Dieter W. Heermann |
cond-mat/9401032 | Instantons and the spectral function of electrons in the half-filled
Landau level | We calculate the instanton-anti-instanton action $S_{M {\bar M}} (\tau)$ in
the gauge theory of the half-filled Landau level. It is found that $S_{M {\bar
M}} (\tau) = (3 - \eta) \left [ \Omega_0 (\eta) \ \tau \right ]^{1 / (3 -
\eta)}$ for a class of interactions $v ({\bf q}) = V_0 / q^{\eta} \ ( 0 \leq
\eta < 2 )$ be... | 1994-01-17 | 2009-10-22 | [
"cond-mat"
] | Yong Baek Kim and Xiao-Gang Wen |
cond-mat/9401031 | Capillary Rise in Tubes with Sharp Grooves | Liquid in grooved capillaries, made by e.g. inserting a plate in a
cylindrical tube, exhibits unusual spreading and flow properties. One example
is capillary rise, where a long, upward tongue on top of the usual meniscus has
been observed along the groove. We attribute the underlying mechanism to a
thermodynamic instab... | 1994-01-17 | 2009-10-22 | [
"cond-mat"
] | Lei-Han Tang and Yu Tang |
cond-mat/9401029 | Theory of Orbital Kondo Effect with Assisted Hopping in Strongly
Correlated Electron Systems: Parquet Equations, Superconductivity and Mass
Enhancement | Orbital Kondo effect is treated in a model, where additional to the
conduction band there are localized orbitals close to the Fermi energy. If the
hopping between the conduction band and the localized heavy orbitals depends on
the occupation of the atomic orbitals in the conduction band then orbital Kondo
correlation o... | 1994-01-15 | 2009-10-22 | [
"cond-mat"
] | K. Penc and A. Zawadowski |
cond-mat/9401028 | Electronic Structure and Lattice Relaxation Related to Fe in Mgo | The electronic structure of Fe impurity in MgO was calculated by the linear
muffin-tin orbital--full-potential method within the conventional local-density
approximation (LDA) and making use of the LDA+$U$ formalism. The importance of
introducing different potentials, depending on the screened Coulomb integral
$U$, is ... | 1994-01-13 | 2009-10-22 | [
"cond-mat"
] | M.Korotin, A.Postnikov, T.Neumann, G.Borstel, V.Anisimov and
M.Methfessel |
cond-mat/9401030 | Asymptotic behavior of A + B --> inert for particles with a drift | We consider the asymptotic behavior of the (one dimensional) two-species
annihilation reaction A + B --> 0, where both species have a uniform drift in
the same direction and like species have a hard core exclusion. Extensive
numerical simulations show that starting with an initially random distribution
of A's and B's a... | 1994-01-13 | 2009-10-22 | [
"cond-mat"
] | S. A. Janowsky (U.Texas) |
cond-mat/9401026 | Disorder Effects in Two-Dimensional d-wave Superconductors | Influence of weak nonmagnetic impurities on the single-particle density of
states $\rho(\omega)$ of two-dimensional electron systems with a conical
spectrum is studied. We use a nonperturbative approach, based on replica trick
with subsequent mapping of the effective action onto a one-dimensional model of
interacting f... | 1994-01-12 | 2009-10-22 | [
"cond-mat"
] | A.A. Nersesyan, A. M. Tsvelik and F. Wenger |
cond-mat/9401023 | Asymptotical solution of infinite-dimensional Hubbard model | We present an asymptotically exact solution of the $\infty-d$ Hubbard model
at a special interaction strength $U_T$ corresponding to the strong-coupling
Fermi-liquid fixed point. This solution is intimately related to the Toulouse
limit of the single-impurity Kondo model and the symmetric Anderson model in
its strong-c... | 1994-01-12 | 2009-10-22 | [
"cond-mat"
] | X. Y. Zhang and G. M. Zhang |
cond-mat/9401022 | Information Length and Localization in One Dimension | The scaling properties of the wave functions in finite samples of the one
dimensional Anderson model are analyzed. The states have been characterized
using a new form of the information or entropic length, and compared with
analytical results obtained by assuming an exponential envelope function. A
perfect agreement is... | 1994-01-12 | 2016-08-31 | [
"cond-mat"
] | Imre Varga and J\'anos Pipek |
cond-mat/9401027 | Critical Dynamics of Contact Line Depinning | The depinning of a contact line is studied as a dynamical critical phenomenon
by a functional renormalization group technique. In $D=2-\epsilon$ interface
dimensions, the roughness exponent is $\zeta=\epsilon/3$ to all orders in
perturbation theory. Thus, $\zeta=1/3$ for the contact line, equal to the
Imry-Ma estimate ... | 1994-01-12 | 2009-10-22 | [
"cond-mat"
] | Deniz Ertas and Mehran Kardar |
cond-mat/9401024 | Strong-Coupling Behavior of Two $t-J$ Chains with Interchain
Single-Electron Hopping | Using the fermion-spin transformation to implement spin-charge separation of
constrained electrons, a model of two $t-J$ chains with interchain
single-electron hopping is studied by abelian bosonization. After spin-charge
decoupling the charge dynamics can be trivially solved, while the spin dynamics
is determined by a... | 1994-01-12 | 2009-10-22 | [
"cond-mat"
] | G. M. Zhang, S. Feng, L. Yu |
cond-mat/9401025 | Polaron Formation in the Three-Band Peierls-Hubbard Model for Cuprate
Superconductors | Exact diagonalization calculations show a continuous transition from
delocalized to small polaron behavior as a function of intersite
electron-lattice coupling. A transition, found previously at Hartree-Fock level
[Yonemitsu et al., Phys. Rev. Lett. {\bf 69}, 965 (1992)], between a magnetic
and a non magnetic state doe... | 1994-01-12 | 2008-06-16 | [
"cond-mat"
] | J. Lorenzana and A. Dobry |
cond-mat/9401019 | Superconductivity in a Quasi One Dimensional Spin Liquid | The single rung t-J ladder is analyzed in a mean field theory using
Gutzwiller renormalization of the matrix elements to account for strong
correlation. The spin liquid (RVB) state at half-filling evolves into a
superconducting state upon doping. The order parameter has a modified d-wave
character. A lattice of weakly ... | 1994-01-11 | 2009-10-22 | [
"cond-mat"
] | M. Sigrist, T.M. Rice and F.C. Zhang |
cond-mat/9401017 | A partition functional and thermodynamic properties of the
infinite-dimensional Hubbard model | An approximate partition functional is derived for the infinite-dimensional
Hubbard model. This functional naturally includes the exact solution of the
Falicov-Kimball model as a special case, and is exact in the uncorrelated and
atomic limits. It explicitly keeps spin-symmetry. For the case of the
Lorentzian density o... | 1994-01-11 | 2009-10-22 | [
"cond-mat"
] | Y. M. Li and N. d'Ambrumenil |
cond-mat/9401021 | Quantum Correlated Interstitials and the Hall Resistivity of the
Magnetically Induced Wigner Crystal | We study a trial wavefunction for an interstitial in a Wigner crystal. We
find that the electron correlations, ignored in a conventional Hartree-Fock
treatment, dramatically lower the interstitial energy, especially at fillings
close to an incompressible liquid state. The correlation between the
interstitial electron a... | 1994-01-11 | 2009-10-22 | [
"cond-mat"
] | Lian Zheng and H.A. Fertig (University of Kentucky) |
cond-mat/9401018 | Bosonization for 2D Interacting Fermion Systems: Non-Fermi Liquid
Behavior | Non-Fermi liquid behavior is found for the first time in a two-dimensional
(2D) system with non-singular interactions using Haldane's bosonization scheme.
The bosonized system is solved exactly by a generalized Bogoliubov
transformation. The fermion momentum distribution, calculated using a
generalized Mattis-Lieb tech... | 1994-01-11 | 2015-06-25 | [
"cond-mat"
] | Y. Yu, Y. M. Li and N. d'Ambrumenil |
cond-mat/9401020 | Measure Factors, Tension, and Correlations of Fluid Membranes | We study two geometrical factors needed for the correct construction of
statistical ensembles of surfaces. Such ensembles appear in the study of fluid
bilayer membranes, though our results are more generally applicable. The naive
functional measure over height fluctuations must be corrected by these factors
in order to... | 1994-01-11 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | W. Cai, T. C. Lubensky, P. Nelson, and T. Powers |
cond-mat/9401016 | A New Exponent Characterizing the Effect of Evaporation on Imbibition
Experiments | We report imbibition experiments investigating the effect of evaporation on
the interface roughness and mean interface height. We observe a new exponent
characterizing the scaling of the saturated surface width. Further, we argue
that evaporation can be usefully modeled by introducing a gradient in the
strength of the ... | 1994-01-10 | 2009-10-22 | [
"cond-mat"
] | Amaral, Barabasi, Buldyrev, Havlin and Stanley |
cond-mat/9401015 | Optical Absorption in C_70 and C_76: Effects of Symmetry Reduction | Optical absorption spectra of C_70 and C_76 are calculated by a tight binding
model with a long ranged Coulomb interaction. The spectrum of C_70 is in
overall agreement with the experiment of molecules in a solution. The
variations of the spectral shape are discussed relating with the symmetry
reduction from C_70 to C_... | 1994-01-08 | 2007-05-23 | [
"cond-mat"
] | Kikuo Harigaya and Shuji Abe (Fundamental Physics Section,
Electrotechnical Laboratory, Umezono, Tsukuba, Japan) |
cond-mat/9401014 | Local Disorder in the Oxygen Environment Around Praseodymium in YBCO:Pr
from X-ray Absorption Fine Structure | We present K-edge XAFS (X-Ray Absorption Fine Structure) data for various
concentrations of Pr in Y$_{1- x}$Pr$_{x}$Ba$_{2}$Cu$_{3}$O$_{7}$. The
character of the Pr K-edge XAFS data indicate that most of the Pr substitutes
onto the Y site and is well ordered with respect to the unit cell. These data
also show that the ... | 1994-01-07 | 2009-10-22 | [
"cond-mat"
] | C.H. Booth, F. Bridges, J.B. Boyce, T. Claeson, Z.X. Zhao, and P.
Cervantes |
cond-mat/9401013 | Correlations in a two--chain Hubbard model | Equal time spin--spin and pair field correlation functions are calculated for
a two-chain Hubbard model using a density-matrix numerical renormalization
group approach. At half-filling, the antiferromagnetic and pair field
correlations both decay exponentially with the pair field having a much shorter
correlation lengt... | 1994-01-07 | 2009-10-22 | [
"cond-mat"
] | R.M. Noack, S.R. White, and D.J. Scalapino |
cond-mat/9401011 | Singlet pairing in the double chain t-J model | Applying the bosonization procedure to constrained fermions in the framework
of the one dimensional t-J model we discuss a scenario of singlet
superconductivity in a lightly doped double chain where all spin excitations
remain gapful. | 1994-01-06 | 2009-10-22 | [
"cond-mat"
] | D.V. Khveshchenko |
cond-mat/9401009 | Exact Results of the 1D $1/r^2$ Supersymmetric t-J Model without
Translational Invariance | In this work, we continue the study of the supersymmetric t-J model with
1/r^2 hopping and exchange without translational invariance. A set of Jastrow
wavefunctions are obtained for the system, with eigenenergies explicitly
calculated. The ground state of the t-J model is included in this set of
wavefunctions. The spec... | 1994-01-06 | 2009-10-22 | [
"cond-mat",
"hep-th"
] | C. Gruber and D. F. Wang |
cond-mat/9401008 | Persistant Current in Isolated Mesoscopic Rings | Persistant current in isolated mesoscopic rings is studied using the
continium and tight-binding models of independent electrons. The calculation is
performed with disorder and also at finite temperature. In the absence of
disorder and at zero temperature agreement is obtained with earlier results by
D. Loss et. al., i... | 1994-01-06 | 2009-10-22 | [
"cond-mat"
] | J.F. Weisz, R. Kishore and Feodor V. Kusmartsev |
cond-mat/9401012 | Bosonization of current-current interactions | We discuss a generalization of the conventional bosonization procedure to the
case of current-current interactions which get their natural representation in
terms of current instead of fermion number density operators. A consistent
bosonization procedure requires a geometrical quantization of the hamiltonian
action of ... | 1994-01-06 | 2009-10-22 | [
"cond-mat"
] | D.V.Khveshchenko |
cond-mat/9401010 | Spin Gap Fixed Points in the Double Chain Problem | Applying the bosonization procedure to weakly coupled Hubbard chains we
discuss the fixed points of the renormalization group flow where all spin
excitations are gapful and a singlet pairing becomes the dominant instability. | 1994-01-06 | 2009-10-22 | [
"cond-mat"
] | D.V.Khveshchenko and T.M.Rice |
cond-mat/9412093 | Study of the magnetic susceptibility in the spin-Peierls system
CuGeO$_3$ | We study numerically, using a one-dimensional Heisenberg model, the
spin-Peierls transition in the linear Cu$^{2+}$ spin-1/2 chains in the
inorganic compound CuGeO$_3$ which has been recently observed experimentally.
We suggest that the magnetic susceptibility, the temperature dependence of the
spin gap and the spin-Pe... | 1994-01-04 | 2009-10-22 | [
"cond-mat"
] | Jose Riera and Ariel Dobry (Instituto de Fisica Rosario, Avda. 27 de
febrero 210 bis, 2000-Rosario, Argentina) |
cond-mat/9401007 | L\'{e}vy flights in random environments | We consider L\'{e}vy flights characterized by the step index $f$ in a
quenched random force field. By means of a dynamic renormalization group
analysis we find that the dynamic exponent $z$ for $f<2$ locks onto $f$,
independent of dimension and {\em independent} of the presence of weak quenched
disorder. The critical d... | 1994-01-04 | 2009-10-22 | [
"cond-mat"
] | Hans C. Fogedby |
cond-mat/9401006 | X-ray Absorption Fine Structure in Embedded Atoms | Oscillatory structure is found in the atomic background absorption in
x-ray-absorption fine structure (XAFS). This atomic-XAFS or AXAFS arises from
scattering within an embedded atom, and is analogous to the Ramsauer-Townsend
effect. Calculations and measurements confirm the existence of AXAFS and show
that it can domi... | 1994-01-03 | 2009-10-22 | [
"cond-mat"
] | J.J. Rehr, C.H. Booth, F. Bridges, S. I. Zabinsky |
cond-mat/9401004 | Quantum Measurement in Electric Circuit | We study fluctuations of electric current in a quantum resistor and derive a
general quantum-mechanical formula for the distribution of transmitted charge.
For that we introduce a scheme of current measurement that involves a spin
$1/2$ coupled to the current so that it precesses at the rate proportional to
the current... | 1994-01-03 | 2007-05-23 | [
"cond-mat"
] | L.S.Levitov and G.B.Lesovik |
cond-mat/9401002 | Test of the hierarchical theory for the FQHE | In the hierarchical theory of the fractional quantum Hall effect, the
low--energy behaviour of a daughter state in the next level of the hierarchy is
described by an interacting system of quasiparticles of the parent state.
Taking the filled lowest Landau level as the parent state, we examine
analytically the quantitat... | 1994-01-03 | 2007-05-23 | [
"cond-mat"
] | M. Kasner |
cond-mat/9401001 | Physics of the Ideal Semion Gas: Spinons and Quantum Symmetries of the
Integrable Haldane-Shastry Spin Chain | Various aspects of the Haldane-Shastry spin chain with 1/r^2 exchange, and
its various generalizations, are reviewed, with emphasis on its Yangian quantum
group structure, and the interpretation of the model as the generalization of
an ideal gas (of ``spinons'') to the case of fractional statistics. Some recent
results... | 1994-01-03 | 2016-08-31 | [
"cond-mat",
"hep-th"
] | F. D. M. Haldane |
cond-mat/9401003 | Chaotic Dynamics of High Order Neural Networks | The dynamics of an extremely diluted neural network with high order synapses
acting as corrections to the Hopfield model is investigated. As in the fully
connected case, the high order terms may strongly improve the storage capacity
of the system. The dynamics displays a very rich behavior, and in particular a
new chao... | 1994-01-03 | 2009-10-22 | [
"cond-mat",
"chao-dyn",
"nlin.CD",
"q-bio.NC"
] | N. Lemke, J.J. Arenzon and F.A. Tamarit |
cond-mat/9401005 | Composite operators for BCS Superconductor | The new form of the composite operator generalizing the Cooper pairs for a
BCS superconductor is introduced. The approach is similar to the derivation of
the composite operator of the odd - frequency superconductors. The examples of
the $d_{x^2-y^2}-,~d_{xy}-$ and $p-$ wave composite operators for a 2D $t-J$
model are ... | 1994-01-03 | 2008-02-03 | [
"cond-mat"
] | J. Bonca and A.V. Balatsky |
cond-mat/9312098 | Driven Morse Oscillator: Model for Multi-photon Dissociation of Nitrogen
Oxide | Within a one-dimensional semi-classical model with a Morse potential the
possibility of microwave multi-photon dissociation of vibrationally excited
nitrogen oxide was studied. The dissociation thresholds of typical driving
forces and couplings were found to be similar, which indicates that the results
were robust to v... | 1994-01-02 | 2008-02-03 | [
"cond-mat",
"comp-gas",
"nlin.CG"
] | Julian Juhi-Lian Ting (Institute of Physics, Tsing-Hua University,
Hsin-Chu, Taiwan, Republic of China) |
cond-mat/9312099 | Nonlinear Schr\"odinger Equation for Superconductors | Using the Hartree-Fock-Bogoliubov factorization of the density matrix and the
Born-Oppenheimer approximation we show that the motion of the condensate
satisfies a nonlinear Schr\"odinger equation in the zero temperature limit. The
Galilean invariance of the equation is explicitly manifested. {}From this
equation some g... | 1994-01-02 | 2015-06-25 | [
"cond-mat"
] | Ping Ao, David J. Thouless, and X.-M. Zhu |
cond-mat/9312097 | Exact Results for 1D Conserved Order Parameter Model | Recent exact results for a particle-exchange model on a linear lattice, with
only irreversible moves reducing the local energy allowed, are reviewed. This
model describes a zero-temperature Kawasaki-type phase separation process which
reaches a frozen, initial-condition-dependent state at large times. | 1994-01-02 | 2007-05-23 | [
"cond-mat"
] | Vladimir Privman |
cond-mat/9402080 | Water Droplet Avalanches | We analyze the statistics of water droplet avalanches in a continuously
driven system. Distributions are obtained for avalanche size, lifetime, and
time between successive avalanches, along with power spectra and return maps.
For low flow rates and different water viscosities, we observe a power-law
scaling in the size... | 1994-02-21 | 2016-08-31 | [
"cond-mat.dis-nn",
"adap-org",
"nlin.AO"
] | Britton Plourde, Franco Nori and Michael Bretz (Dept. of Physics, Un.
of Michigan, Ann Arbor) |
cond-mat/9406083 | Quantum transport in semiconductor-superconductor microjunctions | Recent experiments on conduction between a semiconductor and a superconductor
have revealed a variety of new mesoscopic phenomena. Here is a review of the
present status of this rapidly developing field. A scattering theory is
described which leads to a conductance formula analogous to Landauer's formula
in normal-stat... | 1994-06-21 | 2008-02-03 | [
"cond-mat.mes-hall"
] | C.W.J. Beenakker |
cond-mat/9402078 | Phonon Transmission Rate, Fluctuations, and Localization in Random
Semiconductor Superlattices: Green's Function Approach | We analytically study phonon transmission and localization in random
superlattices by using a Green's function approach. We derive expressions for
the average transmission rate and localization length, or Lyapunov exponent, in
terms of the superlattice structure factor. This is done by considering the
backscattering of... | 1994-02-21 | 2009-10-22 | [
"cond-mat.mtrl-sci"
] | Norihiko Nishiguchi, Shin-ichiro Tamura, and Franco Nori |
cond-mat/9402082 | Effective Carrier Mean-Free Path in Confined Geometries | The concept of exchange length is used to determine the effects of boundary
scattering on transport in samples of circular and rectangular cross section.
Analytical expressions are presented for an effective mean-free path for
transport in the axial direction. The relationship to the phonon thermal
conductivity is disc... | 1994-02-21 | 2009-10-22 | [
"cond-mat.mtrl-sci",
"cond-mat.supr-con"
] | R. A. Richardson and Franco Nori (U. Michigan) |
cond-mat/9402079 | Phonon Universal Transmission Fluctuations and Localization in
Semiconductor Superlattices with a Controlled Degree of Order | We study both analytically and numerically phonon transmission fluctuations
and localization in partially ordered superlattices with correlations among
neighboring layers. In order to generate a sequence of layers with a varying
degree of order we employ a model proposed by Hendricks and Teller as well as
partially ord... | 1994-02-21 | 2009-10-22 | [
"cond-mat.mtrl-sci"
] | Norihiko Nishiguchi, Shin-ichiro Tamura, and Franco Nori |
cond-mat/9412031 | Chaotic Behaviour of Renormalisation Flow in a Complex Magnetic Field | It is demonstrated that decimation of the one dimensional Ising model, with
periodic boundary conditions, results in a non-linear renormalisation
transformation for the couplings which can lead to chaotic behaviour when the
couplings are complex. The recursion relation for the couplings under
decimation is equivalent t... | 1994-12-06 | 2009-10-22 | [
"cond-mat.stat-mech",
"hep-th"
] | B.P. Dolan |
cond-mat/9411077 | Surface Shape and Local Critical Behaviour in Two-Dimensional Directed
Percolation | Two-dimensional directed site percolation is studied in systems directed
along the x-axis and limited by a free surface at y=\pm Cx^k. Scaling
considerations show that the surface is a relevant perturbation to the local
critical behaviour when k<1/z where z=\nu_\parallel/\nu is the dynamical
exponent. The tip-to-bulk o... | 1994-11-18 | 2009-10-22 | [
"cond-mat.stat-mech"
] | C. Kaiser (1 and 2), L. Turban (2) ((1) F. U. Berlin, (2) Henri
Poincare University, Nancy) |
cond-mat/9408077 | Surface Magnetization of Aperiodic Ising Systems: a Comparative Study of
the Bond and Site Problems | We investigate the influence of aperiodic perturbations on the critical
behaviour at a second order phase transition. The bond and site problems are
compared for layered systems and aperiodic sequences generated through
substitution. In the bond problem, the interactions between the layers are
distributed according to ... | 1994-08-24 | 2009-10-22 | [
"cond-mat.stat-mech"
] | L. Turban, P. E. Berche and B. Berche (Henri Poincare Universty,
Nancy) |
cond-mat/9408076 | Fractal Dimensions of Confined Clusters in Two-Dimensional Directed
Percolation | The fractal structure of directed percolation clusters, grown at the
percolation threshold inside parabolic-like systems, is studied in two
dimensions via Monte Carlo simulations. With a free surface at y=\pm Cx^k and a
dynamical exponent z, the surface shape is a relevant perturbation when k<1/z
and the fractal dimens... | 1994-08-24 | 2009-10-22 | [
"cond-mat.stat-mech"
] | C. Kaiser (1 and 2), L. Turban (2) ((1) F. U. Berlin, (2) Henri
Poincare University, Nancy) |
cond-mat/9406035 | Relevant Aperiodic Modulation in the 2d Ising Model | We consider the surface critical behaviour of a semi-infinite two-dimensional
layered Ising model, where the couplings perpendicular to the surface follow
the aperiodic Rudin-Shapiro sequence. The model has unusual critical
properties: depending on the strength of the modulation, at the bulk critical
point the surface ... | 1994-06-07 | 2009-10-22 | [
"cond-mat.stat-mech",
"hep-th"
] | F. Igloi (1 and 2) and L. Turban (3), ((1) Research Institute for
Solid State Physics, Budapest, (2) University of Szeged, (3) Henri Poincare
University, Nancy) |
cond-mat/9403065 | Non Commutative Geometry of Tilings and Gap Labelling | To a given tiling a non commutative space and the corresponding C*-algebra
are constructed. This includes the definition of a topology on the groupoid
induced by translations of the tiling. The algebra is also the algebra of
observables for discrete models of one or many particle systems on the tiling
or its periodic i... | 1994-03-17 | 2016-08-31 | [
"cond-mat.stat-mech",
"hep-th",
"math.OA"
] | Johannes Kellendonk |
cond-mat/9410024 | Questions and Issues Arising at SCES '94 Theory | I summarize some of the key questions to have emerged during the 1994
conference on ``Strongly Correlated Electron Systems'', held in Amsterdam,
August 1994. Issues addressed include: Hunds rule interactions and how they
renormalize; the Luttinger sum rule and metamagnetism; heavy fermion
insulators, the nature of the ... | 1994-10-07 | 2018-10-23 | [
"cond-mat.str-el"
] | P. Coleman (Rutgers) |
cond-mat/9410020 | Quantum Interference on the Kagom\'e Lattice | We study quantum interference effects due to electron motion on the Kagom\'e
lattice in a perpendicular magnetic field. These effects arise from the
interference between phase factors associated with different electron
closed-paths. From these we compute, analytically and numerically, the
superconducting-normal phase b... | 1994-10-07 | 2016-08-31 | [
"cond-mat.supr-con"
] | Yeong-Lieh Lin and Franco Nori |
cond-mat/9402081 | Transport and Boundary Scattering in Confined Geometries: Analytical
Results | We utilize a geometric argument to determine the effects of boundary
scattering on the carrier mean-free path in samples of various cross sections.
Analytic expressions for samples with rectangular and circular cross sections
are obtained. We also outline a method for incorporating these results into
calculations of th... | 1994-02-21 | 2009-10-22 | [
"cond-mat.supr-con"
] | R. Richardson and Franco Nori (U. Michigan) |
cs/9412101 | Wrap-Up: a Trainable Discourse Module for Information Extraction | The vast amounts of on-line text now available have led to renewed interest
in information extraction (IE) systems that analyze unrestricted text,
producing a structured representation of selected information from the text.
This paper presents a novel approach that uses machine learning to acquire
knowledge for some of... | 1994-12-01 | 2014-11-17 | [
"cs.AI"
] | S. Soderland, Lehnert. W |
cs/9412103 | Total-Order and Partial-Order Planning: A Comparative Analysis | For many years, the intuitions underlying partial-order planning were largely
taken for granted. Only in the past few years has there been renewed interest
in the fundamental principles underlying this paradigm. In this paper, we
present a rigorous comparative analysis of partial-order and total-order
planning by focus... | 1994-12-01 | 2009-09-25 | [
"cs.AI"
] | S. Minton, J. Bresina, M. Drummond |
cs/9412102 | Operations for Learning with Graphical Models | This paper is a multidisciplinary review of empirical, statistical learning
from a graphical model perspective. Well-known examples of graphical models
include Bayesian networks, directed graphs representing a Markov chain, and
undirected networks representing a Markov field. These graphical models are
extended to mode... | 1994-12-01 | 2014-11-17 | [
"cs.AI"
] | W. L. Buntine |
cs/9409101 | On Planning while Learning | This paper introduces a framework for Planning while Learning where an agent
is given a goal to achieve in an environment whose behavior is only partially
known to the agent. We discuss the tractability of various plan-design
processes. We show that for a large natural class of Planning while Learning
systems, a plan c... | 1994-09-01 | 2014-11-17 | [
"cs.AI"
] | S. Safra, M. Tennenholtz |
cs/9408102 | Pattern Matching and Discourse Processing in Information Extraction from
Japanese Text | Information extraction is the task of automatically picking up information of
interest from an unconstrained text. Information of interest is usually
extracted in two steps. First, sentence level processing locates relevant
pieces of information scattered throughout the text; second, discourse
processing merges corefer... | 1994-08-01 | 2008-02-03 | [
"cs.AI"
] | T. Kitani, Y. Eriguchi, M. Hara |
cs/9408101 | Random Worlds and Maximum Entropy | Given a knowledge base KB containing first-order and statistical facts, we
consider a principled method, called the random-worlds method, for computing a
degree of belief that some formula Phi holds given KB. If we are reasoning
about a world or system consisting of N individuals, then we can consider all
possible worl... | 1994-08-01 | 2009-09-25 | [
"cs.AI"
] | A. J. Grove, J. Y. Halpern, D. Koller |
cs/9408103 | A System for Induction of Oblique Decision Trees | This article describes a new system for induction of oblique decision trees.
This system, OC1, combines deterministic hill-climbing with two forms of
randomization to find a good oblique split (in the form of a hyperplane) at
each node of a decision tree. Oblique decision tree methods are tuned
especially for domains i... | 1994-08-01 | 2008-02-03 | [
"cs.AI"
] | S. K. Murthy, S. Kasif, S. Salzberg |
cs/9406101 | A Semantics and Complete Algorithm for Subsumption in the CLASSIC
Description Logic | This paper analyzes the correctness of the subsumption algorithm used in
CLASSIC, a description logic-based knowledge representation system that is
being used in practical applications. In order to deal efficiently with
individuals in CLASSIC descriptions, the developers have had to use an
algorithm that is incomplete ... | 1994-06-01 | 2009-09-25 | [
"cs.AI"
] | A. Borgida, P. F. Patel-Schneider |
cs/9406102 | Applying GSAT to Non-Clausal Formulas | In this paper we describe how to modify GSAT so that it can be applied to
non-clausal formulas. The idea is to use a particular ``score'' function which
gives the number of clauses of the CNF conversion of a formula which are false
under a given truth assignment. Its value is computed in linear time, without
constructi... | 1994-06-01 | 2014-11-17 | [
"cs.AI"
] | R. Sebastiani |
cs/9403101 | Exploring the Decision Forest: An Empirical Investigation of Occam's
Razor in Decision Tree Induction | We report on a series of experiments in which all decision trees consistent
with the training data are constructed. These experiments were run to gain an
understanding of the properties of the set of consistent decision trees and the
factors that affect the accuracy of individual trees. In particular, we
investigated t... | 1994-03-01 | 2008-02-03 | [
"cs.AI"
] | P. M. Murphy, M. J. Pazzani |
cs/9402101 | Learning the Past Tense of English Verbs: The Symbolic Pattern
Associator vs. Connectionist Models | Learning the past tense of English verbs - a seemingly minor aspect of
language acquisition - has generated heated debates since 1986, and has become
a landmark task for testing the adequacy of cognitive modeling. Several
artificial neural networks (ANNs) have been implemented, and a challenge for
better symbolic model... | 1994-02-01 | 2009-09-25 | [
"cs.AI"
] | C. X. Ling |
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