搜索结果: 1-15 共查到“知识库 物理学 PERTURBATIONS”相关记录23条 . 查询时间(0.868 秒)
Inverse problems for Jacobi operators II: Mass perturbations of semi-infinite mass-spring systems
Infinite mass-spring system Jacobi matrices Two-spectra inverse problem
2011/7/26
Abstract: We consider an inverse spectral problem for infinite linear mass-spring systems with different configurations obtained by changing the first mass. We give results on the reconstruction of th...
A Blaschke-type condition for analytic functions on finitely connected domains. Applications to complex perturbations of a finite-band selfadjoint operator
Blaschke-type estimates Lieb Thirring type inequalities finite-band selfadjoint operators complex compact perturbation
2011/7/27
Abstract: This is a sequel of a recent article by Borichev-Golinskii-Kupin, where the authors obtain Blaschke-type conditions for special classes of analytic functions in the unit disk which satisfy c...
Full nonlinear growing and decaying modes of superhorizon curvature perturbations
Full nonlinear growing decaying modes superhorizon curvature perturbations
2010/12/21
We clarify the behavior of curvature perturbations in a nonlinear theory in case the inflaton tem-porarily stops during inflation. We focus on the evolution of curvature perturbation on superhorizon s...
We study the evolution of matter density perturbations in Galileon cosmology where the late-time cosmic acceleration can be realized by a field kinetic energy.
We study the evolution of matter density perturbations in Galileon cosmology where the late-time cosmic acceleration can be realized by a field kinetic energy. We obtain full perturbation equations at...
Evolution of cosmological perturbations in an RG-driven inflationary scenario
cosmological perturbations RG-driven inflationary scenario
2010/12/27
A gauge-invariant, linear cosmological perturbation theory of an almost homogeneous and isotropic universe with dynamically evolving Newton constant G and cosmological constant $\Lambda$ is presented...
Full nonlinear growing and decaying modes of superhorizon curvature perturbations
Full nonlinear growing decaying modes
2010/12/27
We clarify the behavior of curvature perturbations in a nonlinear theory in case the inflaton temporarily stops during inflation. We focus on the evolution of curvature perturbation on superhorizon sc...
Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities
Entropic Cosmology Primordial Perturbations non-Gaussianities
2010/12/23
We investigate thermal inflation in double-screen entropic cosmology. We find that its realization is general, resulting from the system evolution from non-equilibrium to equilibrium. Furthermore, goi...
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...
Non-adiabatic perturbations in multi-component perfect fluids
Non-adiabatic perturbations multi-component perfect fluids
2010/12/20
Еvolution of non-adiabatic perturbations in models with multiple coupled perfect fluids with
non-adiabatic sound speed is considered. Instead of splitting the entropy perturbation on relative and int...
Evolution of cosmological perturbations in an RG-driven inflationary scenario
Evolution of cosmological perturbations RG-driven inflationary scenario
2010/12/20
A gauge-invariant, linear cosmological perturbation theory of an almost homogeneous and isotropic universe with dynamically evolving Newton constant G and cosmological constant
is presented.
Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities
Inflation in Entropic Cosmology Primordial Perturbations non-Gaussianities
2010/12/21
We investigate thermal inflation in double-screen entropic cosmology. We find that its realization is general, resulting from the system evolution from non-equilibrium to equilibrium. Furthermore,goin...
Approximating Spectral Impact of Structural Perturbations in Large Networks
Structural Perturbations Large Networks
2010/4/1
Determining the effect of structural perturbations on the eigenvalue spectra of networks is an important problem because the spectra characterize not only their topological structures, but also their ...
Topological quantum order: stability under local perturbations
Topological quantum order local perturbations
2010/3/10
We study zero-temperature stability of topological phases of matter under weak time-independent perturbations. Our results apply to quantum spin Hamiltonians that can be written as a sum of geometrica...
Semiclassical description of quantum perturbations
quantum perturbations Semiclassical description local density of states
2010/4/8
The effect of a perturbation over a quantum system is described by the local density of states (LDOS), a distribution of the overlaps square between the unperturbed and perturbed eigenstates. Its witd...