搜索结果: 1-15 共查到“理论物理学 1/N Expansion”相关记录40条 . 查询时间(0.093 秒)
Systematic 1/M expansion for spin 3/2 particles in baryon chiral perturbation theory
The theory of relativity pion - nucleon - delta system spin 3/2 resonance nuclear soft power the quality of meson
2014/12/22
Starting from a relativistic formulation of the pion-nucleon-delta system, the most general structure of 1/M corrections for a heavy baryon chiral lagrangian including spin 3/2 resonances is given. Th...
Expansion of a Quantum Gas Released from an Optical Lattice
Ultracold atoms optical lattice quantum gas the diffraction optics
2014/12/19
We analyze the interference pattern produced by ultracold atoms released from an optical lattice, commonly interpreted as the momentum distributions of the trapped quantum gas. We show that for finite...
Multiscale Asymptotic Expansion and Finite Element Methods For the Mixed Boundary Value Problems of Second Order Elliptic Equation in Perforated Domains
Homogenization Multiscale asymptotic expansion Elliptic equationof second order with rapidly oscillating coefficients Perforated domain
2012/8/8
In this paper, we will discuss the mixed boundary value problems for
the second order elliptic equation with rapidly oscillating coefficients in perforated
domains, and will present the higher-order...
Hubble's law and faster than light expansion speeds
Hubble's law light expansion speeds four-velocity vector
2011/8/18
Abstract: Naively applying Hubble's law to a sufficiently distant object gives a receding velocity larger than the speed of light. By discussing a very similar situation in special relativity, we argu...
A semiclassical heat trace expansion for the perturbed harmonic oscillator
semiclassical heat trace expansion the perturbed harmonic oscillator Spectral Theory
2011/9/9
Abstract: In this paper we study a semiclassical heat trace expansion for perturbations of the harmonic oscillator, by adapting to the semiclassical setting techniques developed by Hitrik and Polterov...
The expansion in ultraspherical polynomials: a simple procedure for the fast computation of the ultraspherical coefficients
Ultraspherical expansions Gegenbauer coefficients Abel transform
2011/7/28
Abstract: We present a simple and fast algorithm for the computation of the coefficients of the expansion of a function f(cos u) in ultraspherical (Gegenbauer) polynomials. We prove that these coeffic...
Hydrodynamic Expansion of a Strongly Interacting Fermi-Fermi Mixture
Hydrodynamic Expansion Strongly Interacting Fermi-Fermi Mixture
2010/11/25
We report on the expansion of a Fermi-Fermi mixture of 6Li and 40K atoms under conditions of
strong interactions realized near the center of an interspecies Feshbach resonance. We observe two differe...
Can noncommutative effects of quantum nature account for the present speed up of the cosmic expansion?
noncommutative quantum nature account
2010/12/20
In this paper we investigate to which extent noncommutativity, a intrinsically quantum property,may influence the Friedmann-Robertson-Walker cosmological dynamics at late times/large scales.
Time-convolutionless master equation for quantum dots: Perturbative expansion to arbitrary order
Time-convolutionless master equation quantum dots Perturbative expansion arbitrary order
2010/11/19
The master equation describing the non-equilibrium dynamics of a quantum dot coupled to metallic leads is considered. Employing a superoperator approach, we derive an exact time-convolutionless master...
On the high-density expansion for Euclidean Random Matrices
high-density expansion Euclidean Random Matrices
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
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...
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
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...
Resonant-state expansion of the Green's function of open quantum systems
Resonant-state expansion the Green's function quantum systems
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...
Spinning binary waveforms via PN expansion: Equal-mass case
binary waveforms post-Newtonian Equal-mass case
2010/3/18
Complete expressions of time-domain gravitational waveforms for spinning binary inspirals via the post-Newtonian (PN) approximation would require determination of the phase, amplitude, inclination ang...