Excitation spectrum of a 2D long-range Bose-liquid with a supersymmetry
Superconductivity
2015-03-17 v1 Statistical Mechanics
Abstract
We have studied excitation spectrum of the specfic 2D model of strongly interacting Bose particles via mapping of the many-body Schrodinger equation in imaginary time to the classical stochastic dynamics. In a broad range of coupling strength a roton-like spectrum is found, with the roton gap being extremely small in natural units. A single quantum phase transition between strongly correlated supefluid and quantum Berezinsky crystal is found.
Keywords
Cite
@article{arxiv.1012.0482,
title = {Excitation spectrum of a 2D long-range Bose-liquid with a supersymmetry},
author = {E. V. Mozgunov and M. V. Feigel'man},
journal= {arXiv preprint arXiv:1012.0482},
year = {2015}
}
Comments
6 pages, 6 figures