搜索结果: 136-150 共查到“物理学 models”相关记录208条 . 查询时间(0.266 秒)
Phenomenological analysis of elastic scattering reactions using different models
Heavy-ion scattering Regge pole analysis Strong absorption models
2010/7/8
Phenomenological analysis of elastic scattering reactions using different models.
T-system and thermodynamic Bethe ansatz equations for solvable lattice models associated with superalgebras
dressed vacuum form T-system lattice models
2010/4/7
An analytic Bethe ansatz is carried out related to the Lie superalgebra osp(1|2s). We present an eigenvalue formula of a transfer matrix in dressed vacuum form (DVF) labeled by a Young (super) diagram...
Prediction of the stochastic behaviour of nonlinear systems by deterministic models as a classical time-passage probabilistic problem
stochastic behaviour nonlinear systems deterministic models time-passage probabilistic problem
2009/11/16
Assuming that the behaviour of a nonlinear stochastic system can be described by a Markovian diffusion approximation and that the evolution equations can be reduced to a system of ordinary differentia...
Higher-order Korteweg-de Vries models for internal solitary waves in a stratified shear flow with a free surface
Higher-order Korteweg-de Vries models internal solitary waves stratified shear flow
2009/11/12
A higher-order extension of the familiar Korteweg-de Vries equation is derived for internal solitary waves in a density- and current-stratified shear flow with a free surface. All coefficients of this...
Nonlinear data-assimilation using implicit models
Nonlinear data-assimilation implicit models
2009/11/9
We show how the traditional 4D-Var method can be adapted for implicit time-integration and extended for multi-parameter estimation. We present the algorithm for this new method, which we call I4D-Var,...
Time series segmentation with shifting means hidden markov models
Time series segmentation shifting means markov models
2009/11/9
We present a new family of hidden Markov models and apply these to the segmentation of hydrological and environmental time series. The proposed hidden Markov models have a discrete state space and the...
Models for strongly-nonlinear evolution of long internal waves in a two-layer stratification
strongly-nonlinear evolution long internal waves two-layer stratification
2009/11/2
Models describing the evolution of long internal waves are proposed that are based on different polynomial approximations of the exact expression for the phase speed of uni-directional, fully-nonlinea...
Elementary Statistical Models for Vector Collision-Sequence Interference Effects with Poisson-Distributed Collision Times
Elementary Statistical Models Collision Times Vector Collision-Sequence
2009/9/4
In a recent paper (Lewis, 2008) a class of models suitable for application to collision-sequence interference was introduced. In these models velocities are assumed to be completely randomized in each...
Non-Abelian statistics as a Berry phase in exactly solvable models
Non-Abelian statistics Berry phase solvable models
2010/4/13
We demonstrate how to directly study non-Abelian statistics for a wide class of exactly solvable many-body quantum systems. By employing exact eigenstates to simulate the adiabatic transport of a mode...
Exact results for the criticality of quench dynamics in quantum Ising models
Exact results criticality of quench dynamics quantum Ising models
2010/4/12
Based on the obtained exact results we systematically study the quench dynamics of a one-dimensional spin-1/2 transverse field Ising model with zero- and finite-temperature initial states. We focus on...
Quantum models of classical mechanics: maximum entropy packets
Quantum classical mechanics maximum entropy packets
2010/4/7
In a previous paper, a project of constructing quantum models of classical properties has been started. The present paper concludes the project by turning to classical mechanics. The quantum states th...
Comment on "Dynamical reduction models" by A. Bassi and G.C. Ghirardi (arXiv:quant-ph/0302164)
Comment Dynamical reduction models A. Bassi and G.C. Ghirardi
2010/4/9
Bassi and Ghirardi have developed a new theory to address the measurement problem based upon non-linear and stochastic modifications of the Schroedinger equation, which has been given the name Quantum...
We demonstrate how to build a simulation of two dimensional physical theories describing topologically ordered systems whose excitations are in one to one correspondence with irreducible representatio...
Continuum states in generalized Swanson models
Swanson-type pseudo Hermitian Hamiltonian continuum states damped waves progressivewaves Poschl-Teller potential Morse potential
2010/4/7
A one-to-one correspondence is known to exist between the spectra of the discrete states of the non Hermitian Swanson-type Hamiltonian $ H = {\cal{A}}^{\dagger} {\cal{A}} + \alpha {\cal{A}} ^2 + \beta...
Five Dimensional Stiff Fluid Models in Lyra Geometry
Five dimensional cosmological model stiff fluid Lyra geometry
2010/4/8
We have constructed stiff fluid cosmological models in five dimensional space-time based on Lyra geometry. Some physical and geometrical properties of the models are discussed.