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Title: Screening of particle exchange in quantum Boltzmann liquids

Abstract

We employ correlated density-matrix theory of strongly correlated Bose fluids to analyze the structural properties of quantum Boltzmann liquids. The constituents of such a normal quantum system are distinguishable as in a classical fluid since the interparticle forces prevent any exchange of identical bosons at short relative distances. Our study focuses on this particle-screening effect and on its consequences for the properties of various correlation functions, structure functions, momentum distributions, and quasiparticle and collective excitations. The formalism of the adopted microscopic theory is applied to a detailed numerical investigation of particle-screening properties and the quantum behavior of liquid para-hydrogen close to the triple point temperature. The theoretical results are compared with numerical data of path-integral Monte Carlo simulations and with available experimental results of recent cross-section measurements by neutron scattering.

Authors:
 [1]; ;  [2]
  1. School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom)
  2. Institut fuer Theoretische Physik, Universitaet zu Koeln, D-50937 Cologne (Germany)
Publication Date:
OSTI Identifier:
20957830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 17; Other Information: DOI: 10.1103/PhysRevB.75.174204; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BOSONS; COLLECTIVE EXCITATIONS; COMPUTERIZED SIMULATION; CORRELATION FUNCTIONS; CROSS SECTIONS; DENSITY MATRIX; HYDROGEN; LIQUIDS; MONTE CARLO METHOD; NEUTRON DIFFRACTION; PARTICLES; PATH INTEGRALS; SCREENING; STRUCTURE FUNCTIONS; TRIPLE POINT

Citation Formats

Gernoth, K. A., Lindenau, T., and Ristig, M. L. Screening of particle exchange in quantum Boltzmann liquids. United States: N. p., 2007. Web. doi:10.1103/PHYSREVB.75.174204.
Gernoth, K. A., Lindenau, T., & Ristig, M. L. Screening of particle exchange in quantum Boltzmann liquids. United States. doi:10.1103/PHYSREVB.75.174204.
Gernoth, K. A., Lindenau, T., and Ristig, M. L. Tue . "Screening of particle exchange in quantum Boltzmann liquids". United States. doi:10.1103/PHYSREVB.75.174204.
@article{osti_20957830,
title = {Screening of particle exchange in quantum Boltzmann liquids},
author = {Gernoth, K. A. and Lindenau, T. and Ristig, M. L.},
abstractNote = {We employ correlated density-matrix theory of strongly correlated Bose fluids to analyze the structural properties of quantum Boltzmann liquids. The constituents of such a normal quantum system are distinguishable as in a classical fluid since the interparticle forces prevent any exchange of identical bosons at short relative distances. Our study focuses on this particle-screening effect and on its consequences for the properties of various correlation functions, structure functions, momentum distributions, and quasiparticle and collective excitations. The formalism of the adopted microscopic theory is applied to a detailed numerical investigation of particle-screening properties and the quantum behavior of liquid para-hydrogen close to the triple point temperature. The theoretical results are compared with numerical data of path-integral Monte Carlo simulations and with available experimental results of recent cross-section measurements by neutron scattering.},
doi = {10.1103/PHYSREVB.75.174204},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 17,
volume = 75,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}
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