搜索结果: 61-75 共查到“理学 Expansion”相关记录152条 . 查询时间(0.199 秒)
Runaway expansion in confined quasi-2D plasmas and vortex fluids
Runaway expansion quasi-2D plasmas vortex fluids
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2010/11/11
The confined, quasi-two-dimensional guiding center plasma and a system of interacting line vortices in an ideal fluid are examples of Hamiltonian systems with infinite interaction distances. The exis...
Probing the course of cosmic expansion with a combination of observational data
cosmic expansion combination of observational data
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2010/11/16
We study the cosmic expansion history by reconstructing the deceleration parameter q(z)
from the SDSS-II type Ia supernova sample (SNIa) with two different light curve fits (MLCS2k2
and SALT-II), th...
Absence of sign problem in the (saddle point approximation of the) nilpotency expansion of QCD at finite chemical potential
nilpotency expansion finite chemical potential
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2011/1/13
We have developed a method to derive the (approximate) quark contribution to the fermion free
energy of QCD on a lattice, at finite temperature and chemical potential, with Kogut-Susskind
fermions i...
On the asymptotic expansion of the sum of the first n primes
asymptotic expansion sum the first n primes
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2010/11/12
An asymptotic formula for the sum of the first n primes is derived. This result improves the previous results of P. Dusart. Using this asymptotic expansion, we prove the conjectures of R. Mandl and G...
Effective Polyakov-loop theory for pure Yang-Mills from strong coupling expansion
Effective Polyakov-loop theory pure Yang-Mills strong coupling expansion
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2011/1/13
Lattice Yang-Mills theories at finite temperature can be mapped onto effective 3d spin systems,
thus facilitating their numerical investigation.
Rare-gas clusters in intense VUV, XUV and soft x-ray pulses: Signatures of the transition from nanoplasma-driven cluster expansion to Coulomb explosion in ion and electron spectra
VUV XUV soft x-ray pulses
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2010/11/16
We investigate the wavelength dependent ionization, heating, and expansion dynamics of medium-sized rare-gas clusters (Ar$_{923}$) under intense femtosecond short-wavelength free electron laser pulse...
On the high-density expansion for Euclidean Random Matrices
high-density expansion Euclidean Random Matrices
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2010/11/22
Diagrammatic techniques to compute perturbatively the spectral properties of Euclidean random
matrices (ERM) in the high-density regime are introduced and discussed in detail. Such techniques are dev...
Using Model-based Overlapping Seed Expansion to detect highly overlapping community structure
Model-based Overlapping Seed Expansion community structure
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2010/11/16
As research into community finding in social networks progresses, there is a need for algorithms capable of detecting overlapping community structure. Many algorithms have been proposed in recent yea...
The 1/N expansion of colored tensor models
1/N expansion colored tensor models
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2010/12/20
In this paper we perform the 1=N expansion of the colored three dimensional Boulatov tensor model.As in matrix models, we obtain a systematic topological expansion, with increasingly complicated topol...
Probing the course of cosmic expansion with a combination of observational data
cosmic expansion combination of observational data
font style='font-size:12px;'>
2010/12/20
We study the cosmic expansion history by reconstructing the deceleration parameter q(z)
from the SDSS-II type Ia supernova sample (SNIa) with two different light curve fits (MLCS2k2
and SALT-II), th...
Effective Polyakov-loop theory for pure Yang-Mills from strong coupling expansion
Effective Polyakov-loop theory Yang-Mills
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2011/1/6
Lattice Yang-Mills theories at finite temperature can be mapped onto effective 3d spin systems, thus facilitating their numerical investigation. Using strong-coupling expansions we derive effective ac...
High--order connected moments expansion for the Rabi Hamiltonian
High-order connected moments expansion Rabi Hamiltonian
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2010/11/9
We analyze the convergence properties of the connected moments expansion (CMX) for the Rabi Hamiltonian. To this end we calculate the moments and connected moments of the Hamiltonian operator to a suf...
Green's Function expansion of scalar and vector fields in the presence of a medium
Green's Function expansion scalar and vector fields presence of a medium
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2010/11/5
Based on a canonical approach and functional-integration techniques, a series expansion of Green's function of a scalar field, in the presence of a medium, is obtained. A series expansion for Lifshitz...
Resonant-state expansion of the Green's function of open quantum systems
Resonant-state expansion the Green's function quantum systems
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2010/11/9
Our series of recent work on the transmission coefficient of open quantum systems in one dimension will be reviewed. The transmission coefficient is equivalent to the conductance of a quantum dot conn...
Constraining the expansion rate of the Universe using low-redshift ellipticals as cosmic chronometers
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2010/12/24
We present a new methodology to determine the expansion history of the Universe analyzing the spectral properties of early type galaxies (ETG). We found that for these galaxies the 4000\AA break is a ...