Dynamic many-body theory: Multiparticle fluctuations and the dynamic structure of He4

C. E. Campbell, E. Krotscheck, and T. Lichtenegger
Phys. Rev. B 91, 184510 – Published 14 May 2015
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Abstract

We present further progress in a systematic approach to the microscopic understanding of the dynamics of strongly interacting quantum fluids. Employing the concept of dynamic multiparticle fluctuations, we derive equations of motion for fluctuating n-body densities. We apply the theory to calculate the dynamic structure function of liquid He4 as a function of density and find, without any phenomenological input, overall excellent agreement with both experiments and, as far as available, simulation data.

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  • Received 23 February 2015
  • Revised 19 April 2015

DOI:https://doi.org/10.1103/PhysRevB.91.184510

©2015 American Physical Society

Authors & Affiliations

C. E. Campbell1, E. Krotscheck2,3, and T. Lichtenegger2,3

  • 1School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
  • 2Institut für Theoretische Physik, Johannes Kepler Universität, A 4040 Linz, Austria
  • 3Department of Physics, University at Buffalo, SUNY Buffalo, New York 14260, USA

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Issue

Vol. 91, Iss. 18 — 1 May 2015

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