Type: atom
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Title: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
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Item: Impact of Electron-Electron Cusp on Configuration Interaction Energies
<http://arxiv.org/pdf/cond-mat/0102536v1>
Date: 2001-02-28 20:12:09 UTC
The effect of the electron-electron cusp on the convergence of 
configuration interaction (CI) wave functions is examined. By analogy 
with the pseudopotential approach for electron-ion interactions, an 
effective electron-electron interaction is developed which closely 
reproduces the scattering of the Coulomb interaction but is smooth and 
finite at zero electron-electron separation. The exact many-electron 
wave function for this smooth effective interaction has no cusp at zero 
electron-electron separation. We perform CI and quantum Monte Carlo 
calculations for He and Be atoms, both with the Coulomb 
electron-electron interaction and with the smooth effective 
electron-electron interaction. We find that convergence of the CI 
expansion of the wave function for the smooth electron-electron 
interaction is not significantly improved compared with that for the 
divergent Coulomb interaction for energy differences on the order of 1 
mHartree. This shows that, contrary to popular belief, description of 
the electron-electron cusp is not a limiting factor, to within chemical 
accuracy, for CI calculations.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: Claudia Filippi, David Prendergast, J. C. Greer, M. Nolan and Stephen Fahy
Filed under: cond-mat.str-el
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Item: Electron thermal conductivity owing to collisions between degenerate electrons
<http://arxiv.org/pdf/astro-ph/0608371v1>
Date: 2006-08-17 14:05:46 UTC
We calculate the thermal conductivity of electrons produced by 
electron-electron Coulomb scattering in a strongly degenerate electron 
gas taking into account the Landau damping of transverse plasmons. The 
Landau damping strongly reduces this conductivity in the domain of 
ultrarelativistic electrons at temperatures below the electron plasma 
temperature. In the inner crust of a neutron star at temperatures T < 
1e7 K this thermal conductivity completely dominates over the electron 
conductivity due to electron-ion (electron-phonon) scattering and 
becomes competitive with the the electron conductivity due to scattering 
of electrons by impurity ions.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: D. G. Yakovlev and P. S. Shternin
Filed under: astro-ph
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Item: Electron-Electron Bremsstrahlung Emission and the Inference of Electron Flux Spectra in Solar Flares
<http://arxiv.org/pdf/0707.4225v1>
Date: 2007-07-28 09:32:22 UTC
Although both electron-ion and electron-electron bremsstrahlung 
contribute to the hard X-ray emission from solar flares, the latter is 
normally ignored. Such an omission is not justified at electron (and 
photon) energies above $\sim 300$ keV, and inclusion of the additional 
electron-electron bremsstrahlung in general makes the electron spectrum 
required to produce a given hard X-ray spectrum steeper at high 
energies. Unlike electron-ion bremsstrahlung, electron-electron 
bremsstrahlung cannot produce photons of all energies up to the maximum 
electron energy involved. The maximum possible photon energy depends on 
the angle between the direction of the emitting electron and the emitted 
photon, and this suggests a diagnostic for an upper cutoff energy and/or 
for the degree of beaming of the accelerated electrons. We analyze the 
large event of January 17, 2005 observed by RHESSI and show that the 
upward break around 400 keV in the observed hard X-ray spectrum is 
naturally accounted for by the inclusion of electron-electron 
bremsstrahlung. Indeed, the mean source electron spectrum recovered 
through a regularized inversion of the hard X-ray spectrum, using a 
cross-section that includes both electron-ion and electron-electron 
terms, has a relatively constant spectral index $\delta$ over the range 
from electron kinetic energy $E = 200$ keV to $E = 1$ MeV. However, the 
level of detail discernible in the recovered electron spectrum is not 
sufficient to determine whether or not any upper cutoff energy exists.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: A. Gordon Emslie, Anna Maria Massone, Eduard P. Kontar, John C. Brown, Marco Prato and Michele Piana
Filed under: astro-ph
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Item: Improved scenario of baryogenesis
<http://arxiv.org/pdf/astro-ph/9904306v1>
Date: 1999-04-22 15:54:59 UTC
It is assumed that, in the primordial plasma, at the temperatures above 
the mass of electron, fermions are in the neutral state being the 
superposition of particle and antiparticle. There exists neutral 
proton-electron symmetry. Proton-electron equilibrium is defined by the 
proton-electron mass difference. At the temperature equal to the mass of 
electron, pairs of neutral electrons annihilate into photons, and pairs 
of neutral protons and electrons survive as protons and electrons.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: D. L. Khokhlov
Filed under: astro-ph
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Item: Exact Electron-Pairing Ground States of Tight-Binding Models with Local Attractive Interactions
<http://arxiv.org/pdf/cond-mat/0310615v1>
Date: 2003-10-27 08:59:02 UTC
We present a class of exactly solvable models of correlated electrons. 
The models are defined in any dimension $d$ and consist of 
electron-hopping terms and local attractive interactions between 
electrons. For each even number of electrons less than or equal to 
$1/(d+1)$-filling, we find the exact ground state in which all electrons 
form pairs of a certain type, and thus the models exhibit an 
electron-pair condensation.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: Akinori Tanaka
Filed under: cond-mat.str-el
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Item: Electron-electron interactions in a weakly screened two-dimensional electron system
<http://arxiv.org/pdf/cond-mat/0205001v1>
Date: 2002-04-30 20:00:18 UTC
We probe the strength of electron-electron interactions using 
magnetoconductivity measurements of two-dimensional non-degenerate 
electrons on liquid helium at 1.22 K. Our data extend to electron 
densities that are two orders of magnitude smaller than previously 
reported. We span both the independent-electron regime where the data 
are qualitatively described by the self-consistent Born approximation 
(SCBA), and the strongly-interacting electron regime. At finite fields 
we observe a crossover from SCBA to Drude theory as a function of 
electron density.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: A. J. Dahm and I. Karakurt
Filed under: cond-mat.str-el
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Item: First-principles calculations of hot-electron lifetimes in metals
<http://arxiv.org/pdf/cond-mat/0002322v1>
Date: 2000-02-21 11:53:06 UTC
First-principles calculations of the inelastic lifetime of low-energy 
electrons in Al, Mg, Be, and Cu are reported. Quasiparticle damping 
rates are evaluated from the knowledge of the electron self-energy, 
which we compute within the GW approximation of many-body theory. 
Inelastic lifetimes are then obtained along various directions of the 
electron wave vector, with full inclusion of the band structure of the 
solid. Average lifetimes are also reported, as a function of the 
electron energy. In Al and Mg, splitting of the band structure over the 
Fermi level yields electron lifetimes that are smaller than those of 
electrons in a free-electron gas. Larger lifetimes are found in Be, as a 
result of the characteristic dip that this material presents in the 
density of states near the Fermi level. In Cu, a major contribution from 
$d$ electrons participating in the screening of electron-electron 
interactions yields electron lifetimes which are well above those of 
electrons in a free-electron gas with the electron density equal to that 
of valence ($4s^1$) electrons.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: A. Rubio, E. V. Chulkov, I. Campillo, J. M. Pitarke, P. M. Echenique and V. M. Silkin
Filed under: cond-mat.mtrl-sci
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Item: Electronic Properties Of Buckminsterfullerenes: Degeneracies and Surprises
<http://arxiv.org/pdf/cond-mat/9610058v1>
Date: 1996-10-08 14:08:55 UTC
Buckminsterfullerene compounds exibit remarkable physics at low 
temperatures, e.g. high temperature superconductivity in 
alkali-fullerenes, and ferromagnetism in TDAE -C60. Here we review 
recent theoretical studies of electron correlations in these compounds. 
In particular, we discuss models of electron-vibron interactions, 
electron-electron interactions, and intermolecular hopping. We show that 
the origin of novel electronic phases lies in {\em local} degeneracies 
of C60; a direct consequence of the high molecular symmetry.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: Assa Auerbach
Filed under: cond-mat.str-el
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Item: Energy relaxation in the spin-polarized disordered electron liquid
<http://dx.doi.org/10.1103/PhysRevLett.100.206804>
Date: 2007-08-03 14:34:40 UTC
The energy relaxation in the spin-polarized disordered electron systems 
is studied in the diffusive regime. We derived the quantum kinetic 
equation in which the kernel of electron-electron collision integral 
explicitly depends on the electron magnetization. As the consequence, 
the inelastic scattering rate is found to have non-monotonic dependence 
on the spin polarization of the electron system.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: I. S. Burmistrov and N. M. Chtchelkatchev
Filed under: cond-mat.mes-hall, cond-mat.str-el
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Item: Shear viscosity of degenerate electron matter
<http://arxiv.org/pdf/0803.3893v1>
Date: 2008-03-27 11:38:09 UTC
We calculate the partial electron shear viscosity $\eta_{ee}$ limited by 
electron-electron collisions in a strongly degenerate electron gas 
taking into account the Landau damping of transverse plasmons. The 
Landau damping strongly suppresses $\eta_{ee}$ in the domain of 
ultrarelativistic degenerate electrons and modifies its %asymptotic 
temperature behavior. The efficiency of the electron shear viscosity in 
the cores of white dwarfs and envelopes of neutron stars is analyzed.

Feed: ArXiv Query: search_query=all:electron&id_list=&start=0&max_results=10
Author: P. S. Shternin
Filed under: astro-ph
