搜索结果: 1-15 共查到“知识库 理学 scalar field”相关记录30条 . 查询时间(0.068 秒)
Non-adiabatic transitions in a massless scalar field
Non-adiabatic transitions massless scalar field Mathematical Physics
2012/4/17
We consider the dynamics of a massless scalar field with time-dependent sources in the adiabatic limit. This is an example of an adiabatic problem without spectral gap. The main goal of our paper is t...
Self force via $m$-mode regularization and 2+1D evolution: II. Scalar-field implementation on Kerr spacetime
regularization 2+1D evolution Scalar-field implementation Kerr spacetime
2011/10/18
This is the second in a series of papers aimed at developing a practical time-domain method for self-force calculations in Kerr spacetime. The key elements of the method are (i) removal of a singular ...
Power-law entropy corrected new holographic scalar field models of dark energy
Power-law holographic scalar field models dark energy PLECHDE model
2011/8/11
Abstract: In this work, the PLECHDE model with Granda-Oliveros infrared cutoff is studied and the evolution of dark energy density, deceleration and EoS parameters are calculated. I demonstrate that u...
Singular and non-singular endstates in massless scalar field collapse
Singular and non-singular endstates in massless scalar field collapse
2011/10/14
We study the collapse of a massless scalar field coupled to gravity. A class of blackhole solutions are identified. We also report on a class of solutions where collapse starts from a regular spacelik...
Scalar field description of a parametric model of dark energy
Scalar field description parametric model dark energy
2011/10/9
We investigate theoretical and observational aspects of a time-dependent parameterization for the dark energy equation of state (EoS) $w(z)$, which is a well behaved function of the redshift $z$ over ...
Evolution of non-Gaussianity in multi-scalar field models
Infl ation Cosmological perturbation theory Physics of the early universe
2011/10/8
We study the evolution of non-Gaussianity in multiple-field inflationary models, focusing on three fundamental questions: (a) How is the sign and peak magnitude of the non-linearity parameter fNL rela...
Fuzzy Scalar Field Theory as Matrix Quantum Mechanics
Fuzzy Scalar Field Theory Matrix Quantum Mechanics
2011/3/3
We study the phase diagram of scalar field theory on a three dimensional Euclidean spacetime whose spatial component is a fuzzy sphere. The corresponding model is an ordinary one-dimensional matrix mo...
We study the Casimir energy of a scalar field for a regular polygon with N sides.
Casimir energy scalar field regular polygon
2011/2/25
We study the Casimir energy of a scalar field for a regular polygon with N sides.The scalar field obeys Dirichlet boundary conditions at the perimeter of the polygon.
Scalar Field in Non-commutative Curved Space time
Scalar Field Non-commutative Curved Space time
2010/12/24
We will study the theory of scalar field in non-commutative curved space time (NCCST) with a percussionist who has been found by Mebaraki. In this paper, the motion equation of the scalar field will ...
Scalar field reconstruction of power-law entropy-corrected holographic dark energy
Scalar field reconstruction power-law entropy-corrected holographic dark energy
2010/12/24
A so called "power-law entropy-corrected holographic dark energy" (PLECHDE) was recently proposed to explain the dark energy dominated universe. This model is based on the power-law corrections to bl...
Distinguishability of scalar field models of dark energy with time variable equation of state parameter
cosmology dark energy–scalar field cosmic microwave background
2010/11/16
The possibility of distinguishing of scalar field models of dark energy with different Lagrangians and time variable equation of state parameter by available observational data is analyzed. The mul-ti...
Stability and QuasinormalModes of Black holes in Tensor-Vector-Scalar theory: Scalar Field Perturbations
Stability QuasinormalModes Black holes Tensor-Vector-Scalar theory Scalar Field Perturbations Tensor-Vector-Scalar theory
2010/11/16
The imminent detection of gravitational waves will trigger precision tests of gravity through
observations of quasinormal ringing of black holes. While General Relativity predicts just two po-larizat...
Stability and Quasinormal Modes of Black holes in Tensor-Vector-Scalar theory: Scalar Field Perturbations
Stability Quasinormal Modes of Black holes Tensor-Vector-Scalar theory Scalar Field Perturbations
2010/12/20
The imminent detection of gravitational waves will trigger precision tests of gravity through
observations of quasinormal ringing of black holes. While General Relativity predicts just two po-larizat...
Scalar field in nuclear matter: the roles of spontaneous chiral symmetry breaking and nucleon structure
nuclear matter roles of spontaneous chiral symmetry breaking nucleon structure
2011/1/6
Chiral theories with spontaneous symmetry breaking such as the Nambu-Jona-Lasinio (NJL)
model lead to the existence of a scalar mode. We present in a detailed manner how the corresponding low momentu...
Cosmology of an asymptotically free scalar field with spontaneous symmetry breaking
asymptotically free scalar spontaneous symmetry breaking
2010/12/20
We solve Einstein’s equation with Robertson-Walker metric as an initial-value problem, using as the source of gravity a Halpern-Huang real scalar field, which was derived from renormalization-group an...