搜索结果: 1-15 共查到“理论物理学 conditions”相关记录26条 . 查询时间(0.078 秒)
An Effective Theory of Initial Conditions in Inflation
The new physics cosmic microwave radiation power spectrum
2014/12/20
We examine the renormalization of an effective theory description of a general initial state set in an isotropically expanding space-time, which is done to understand how to include the effects of new...
Soft-and-Hard/D'B' Boundary Conditions and their Realization by Electromagnetic Media
Boundary Conditions Electromagnetic Media Mathematical Physics
2012/4/27
A layer of uniaxial medium with large axial permittivity and permeability can be used as a quarter-wave transformer with interesting properties. By increasing the transverse permittivity and permeabil...
Initial Conditions and the ‘Open Systems’ Argument against Laws of Nature
Determinism Laws of nature Open systems Cartwright Quantum Decoherence
2011/9/6
This article attacks “open systems” arguments that because constant conjunctions are not generally observed in the real world of open systems we should be highly skeptical that universal laws exist. T...
A spectral theory of linear operators on rigged Hilbert spaces under certain analyticity conditions
generalized eigenvalue resonance pole rigged Hilbert space Gelfand triplet generalized function
2011/9/22
Abstract: A spectral theory of linear operators on rigged Hilbert spaces (Gelfand triplets) is developed under the assumptions that a linear operator $T$ on a Hilbert space $\mathcal{H}$ is a perturba...
Extremum conditions for functionals involving higher derivatives of several variable vector valued functions
Variational problems critical points extremum conditions
2011/9/21
Abstract: This paper addresses both necessary and relevant sufficient extremum conditions for a variational problem defined by a smooth Lagrangian, involving higher derivatives of several variable vec...
Stationary Nonlinear Schrodinger Equation on Simplest Graphs: Boundary conditions and exact solutions
Nonlinear Schrodinger Equation Simplest Graphs Mathematical Physics
2011/9/29
Abstract: We treat the stationary (cubic) nonlinear Schr\"odinger equation (NSLE) on simplest graphs. Formulation of the problem and exact analytical solutions of NLSE are presented for star graphs co...
W-extended Kac representations and integrable boundary conditions in the logarithmic minimal models WLM(1,p)
W-extended Kac representations integrable boundary conditions the logarithmic minimal models
2011/7/28
W-extended Kac representations and integrable boundary conditions in the logarithmic minimal models WLM(1,p).
A Brief Remark on Energy Conditions and the Geroch-Jang Theorem
Brief Remark Energy Conditions the Geroch-Jang Theorem
2011/7/27
Abstract: The status of the geodesic principle in General Relativity has been a topic of some interest in the recent literature on the foundations of spacetime theories. Part of this discussion has fo...
Minimal conditions for the existence of a Hawking-like flux
Hawking radiation horizons black holes surface gravity
2010/12/20
We investigate the minimal conditions that an asymptotically flat general relativistic spacetime must satisfy in order for a Hawking-like Planckian flux of particles to arrive at future null infinity....
Highly anisotropic hydrodynamics -- discussion of the model assumptions and forms of the initial conditions
Highly anisotropic hydrodynamics -- discussion model assumptions forms of the initial conditions
2011/1/7
The model assumptions of the recently formulated framework of highlyanisotropic and strongly-dissipative hydrodynamics (ADHYDRO) are analyzed.In particular, we study dependence of numerical results on...
Energy conditions in modified Gauss-Bonnet gravity
Energy conditions Gauss-Bonnet gravity
2010/12/20
In considering alternative higher-order gravity theories, one is liable to be motivated in pursuing models consistent and inspired by several candidates of a fundamental theory of quantum gravity.
Junction conditions at spacetime singularities
Junction conditions spacetime singularities
2010/12/20
A classical model for the extension of singular spacetime geometries across their singularities
is presented. The regularization introduced by this model is based on the following observation.
An efficient method for the incompressible Navier-Stokes equations on irregular domains with no-slip boundary conditions, high order up to the boundary
the incompressible Navier-Stokes equations irregular domains no-slip boundary conditions
2010/11/18
Common efficient schemes for the incompressible Navier-Stokes equations, such as projection or fractional step methods, have limited temporal accuracy as a result of matrix splitting errors, or introd...
Wormholes respecting energy conditions and solitonic shells in DGP gravity
Wormholes solitonic shells energy conditions
2010/3/18
We build spherically symmetric wormholes within the DGP theory. We calculate the energy localized on the shell, and we find that for certain values of the parameters wormholes could be supported by ma...
Solution of the Quantum Initial Value Problem with Transparent Boundary Conditions
Quantum Initial Value Transparent Boundary Conditions
2010/4/1
Physicists have used billiards to understand and explore both classical and quantum chaos. Recently, in 2001, a group at the University of Texas introduced an experimental set up for modeling the wedg...