variational method

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• variational method — variacinis metodas statusas T sritis automatika atitikmenys: angl. variational method vok. Variationsmethode, f rus. вариационный метод, m; метод вариации, m pranc. méthode des variations, f …   Automatikos terminų žodynas

• variational method — variacinis metodas statusas T sritis fizika atitikmenys: angl. variational method vok. Variationsmethode, f; Variationsverfahren, n rus. вариационный метод, m pranc. méthode des variations, f …   Fizikos terminų žodynas

• Variational method (quantum mechanics) — The variational method is, in quantum mechanics, one way of finding approximations to the lowest energy eigenstate or ground state, and some excited states. The basis for this method is the variational principle. Introduction Suppose we are given …   Wikipedia

• Variational Monte Carlo — Variational Monte Carlo(VMC) is a quantum Monte Carlo method that applies the variational method to approximate the ground state of the system. The expectation value necessary can be written in the x representation as frac{langle Psi(a) | H |… …   Wikipedia

• Variational principle — A variational principle is a principle in physics which is expressed in terms of the calculus of variations. According to Cornelius Lanczos, any physical law which can be expressed as a variational principle describes an expression which is self… …   Wikipedia

• Variational perturbation theory — In mathematics, variational perturbation theory is a mathematical method to convert divergent power series in a small expansion parameter, say :s=sum {n=0}^infty a n g^n, into a convergent series in powers :s=sum {n=0}^infty b n /(g^omega)^n,… …   Wikipedia

• Ritz method — In physics, the Ritz method is a variational method named after Walter Ritz.In quantum mechanics, a system of particles can be described in terms of an energy functional or Hamiltonian, which will measure the energy of any proposed configuration… …   Wikipedia

• Rayleigh-Ritz method — In applied mathematics and mechanical engineering, the Rayleigh Ritz method is a widely used, classical method for the calculation of the natural vibration frequency of a structure in the second or higher order. It is a direct variational method… …   Wikipedia

• Finite element method — The finite element method (FEM) (sometimes referred to as finite element analysis) is a numerical technique for finding approximate solutions of partial differential equations (PDE) as well as of integral equations. The solution approach is based …   Wikipedia

• History of variational principles in physics — A variational principle in physics is an alternative method for determining the state or dynamics of a physical system, by identifying it as an extremum (minimum, maximum or saddle point) of a function or functional. This article describes the… …   Wikipedia

• Trefftz method — In mathematics, the Trefftz method is a method for the numerical solution of partial differential equations named after the German mathematician Erich Trefftz (1888 1937). It falls within the class of finite element methods. Introduction The… …   Wikipedia