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Dynamic structure factor for 3He in two-dimensions

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arxiv 1302.1799 v2 pith:CTMQVGVH submitted 2013-02-07 cond-mat.other

M. Nava , D.E. Galli , S. Moroni , E. Vitali This is my paper
classification cond-mat.other
keywords schemeaddressaffordsanalyticcalculatecarlocombinedcontinuation
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Recent neutron scattering experiments on 3He films have observed a zero-sound mode, its dispersion relation and its merging with -and possibly emerging from- the particle-hole continuum. Here we address the study of the excitations in the system via quantum Monte Carlo methods: we suggest a practical scheme to calculate imaginary time correlation functions for moderate-size fermionic systems. Combined with an efficient method for analytic continuation, this scheme affords an extremely convincing description of the experimental findings.

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