搜索结果: 1-15 共查到“物理学其他学科 Theory”相关记录15条 . 查询时间(0.207 秒)
Researchers confirm decades-old theory describing principles of phase transitions
Researchers decades-old theory describing principles phase transitions
2016/11/29
New research conducted at the University of Chicago has confirmed a decades-old theory describing the dynamics of continuous phase transitions.The findings, published in the Nov. 4 issue of Science, p...
Einstein's vierbein field theory of curved space
vierbein, general relativity, gravitational gauge theory, Dirac equation in curved space
2011/9/13
General Relativity theory is reviewed following the vierbein field theory approach proposed in 1928 by Einstein. It is based on the vierbein field taken as the “square root” of the metric tensor field...
We relate two formulations of the recently constructed double field theory to a frame-like geometrical formalism developed by Siegel. A self-contained presentation of this formalism is given, includi...
A non-perturbative method which can go beyond the weak coupling perturbation theory is introduced. Essential idea is to formulate a set of exact differential equations as a function of the coupling s...
Minimal and Maximal Operator Spaces and Operator Systems in Entanglement Theory
operator space operator system quantum information theory entanglement
2010/11/11
We examine k-minimal and k-maximal operator spaces and operator systems, and investigate their relationships with the separability problem in quantum information theory. We show that the matrix norms ...
In this paper we analyze perturbatively a g phi^4 classical field theory with and without temperature. In order to do that, we make use of a path-integral approach developed some time ago for classic...
Non-uniqueness of the Dirac theory in a curved spacetime
curved spacetime Non-uniqueness Dirac theory
2010/3/17
We summarize a recent work on the subject title. The Dirac equation in a curved spacetime depends on a field of coefficients (essentially the Dirac matrices), for which a continuum of different choice...
Functional-Integral Based Perturbation Theory for the Malthus-Verhulst Process
Birth-and-death process Master equation Path integral Omega-expansion Doi formalism
2010/10/13
We apply a functional-integral formalism for Markovian birth and death processes to determine asymptotic corrections to mean-field theory in the Malthus-Verhulst process (MVP). Expanding about the sta...
Metric Nonsymmetric Theory of Gravitation: the Analogue of the Theorem of Birkhoff
Nonsymmetric Birkhoff
2010/10/13
We prove that a spherically symmetric solution of the field equations of the metric nonsymmetric theory of gravitation developed previously is necessarily static.This is the analogue of the well known...
Boundary Conditions in Theory of Photothermal Processes
Photothermal processes Surface thermal conductivity Surface thermal capacity Surface thermal impedance
2010/9/29
The general boundary conditions for the thermal diffusion equation are obtained. It is shown that in the general case of a nonstationary photothermal process these boundary conditions must include bot...
Conservation Laws in a Metric Nonsymmetric Theory of Gravitation
Conservation Laws a Metric Nonsymmetric Theory of Gravitation
2010/10/15
The conservation laws associated with a previously studied metric nonsymmetric theory of gravitation are established and their physical significance is discussed. Conservation laws are obtained for th...
The main steps in the development of the ideas on decoherence are briefly reviewed, together with their present achievements. Unsolved problems are also pointed out.
Heavy Ion Interactions from Coulomb Barrier to Few GeV/n: Boltzmann Master Equation Theory and FLUKA Code Performances
Heavy Ion Coulomb Barrier Few GeV/n Boltzmann Master Equation Theory FLUKA Code Performances
2010/10/25
Results which have been recently obtained with the Boltzmann master equation and the FLUKA code in the analysis of heavy ion interactions at relative energies ranging from Coulomb barrier up to a few ...
Gauge invariant reduction and integrability of SL(2 ,R)/ U(1) WZNW theory
Gauge invariant SL(2 ,R)/ U(1) WZNW theory
2010/4/15
The general solution of SL(2,{\bf R})/U(1) WZNW theory is constructed by a gauge invariant reduction. This is done within both Lagrangian and Hamiltonian frameworks.
Old Weyl's the idea of scale recalibration freedom and Infeld's and van der Waerden's (IW) ideas concerning geometrical interpretation of natural spinor phase gauge symmetry are discussed in the conte...