Titlebook: Condensed Matter Theories; Jouko S. Arponen,R. F. Bishop,Matti Manninen Book 1988 Plenum Press, New York 1988 condensed matter.energy.meta

清洗

Variational Approximation to the Non-Hermitian Dyson Boson Hamiltonianitary and nonunitary mappings have been used. The latter, referred to as the Dyson boson theory, has two advantages. It is exact and provides a finite boson expansion whereas the Hermitian theories are characterized by infinite boson expansions. However, some problems also arise. Due to the nonunita

constitutional

Semiclassical Molecular Dynamics of Wavepackets in One-Dimensional Phase Spaceg a Gaussian density matrix and is applicable to systems in pure and in mixed states having nonlinear interaction potentials. The density matrix is constructed using a set of dynamic variables whose expectation values are considered to be relevant for the dynamics. The self-consistent equations of m

腐爛

Theory of Neutron Scattering Experiments on Momentum Distributions in Quantum Fluidsestion by Hohenberg and Platzman,. there have been many experiments. with the goal of determining momentum distributions by scattering neutrons at momentum transfer high enough to invoke the impulse approximation (IA). The IA is questionable for helium, because the He-He potential is steeply repulsi

Endemic