首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Momentum distribution and one-body density matrix in liquid3He.
Authors:A Fabrocini  V R Pandharipande  Q N Usmani
Institution:(1) Dipartimento di Fisica dell'Università, INFN, Sezione di Pisa, I-56100 Pisa, Italia;(2) Department of Physics, University of Illinois at Urbana-Champaign, 61801 Urbana, IL, USA;(3) Department of Physics, Jamia Millia Islamia, Jamia Nagar, 110025 New Delhi, India
Abstract:Summary The momentum distributionn(k) and the one-body density matrix ρ1(r,r' have been calculated in normal liquid3He atT=0. A variational wave function containing two-, three-body and backflow correlations has been used. The Fermi hypernetted chain technique has been employed and the elementary diagrams have been evaluated by the scaling approximation. The present estimate ofn(k) is in good agreement with the Monte Carlo data obtained with similar wave functions.n(k) and the discontinuityZ ofn(k) at the Fermi surface have been computed at several values of the density. The density dependence of the effective massm * has been found to be mainly due to that ofZ.
Keywords:Fermi fluids  liquid helium-3
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号