Nambu-Goldstone bosons with fractional-power dispersion relations
High Energy Physics - Theory
2014-08-12 v2 Other Condensed Matter
High Energy Physics - Phenomenology
Abstract
We pin down the origin of a peculiar dispersion relation of domain wall fluctuation, the so-called ripplon, in a superfluid-superfluid interface. A ripplon has a dispersion relation due to the nonlocality of the effective Lagrangian, which is mediated by gapless superfluid phonons in the bulk. We point out the analogy to the longitudinal phonon in the two-dimensional Wigner crystal.
Cite
@article{arxiv.1403.3365,
title = {Nambu-Goldstone bosons with fractional-power dispersion relations},
author = {Haruki Watanabe and Hitoshi Murayama},
journal= {arXiv preprint arXiv:1403.3365},
year = {2014}
}
Comments
5 pages, 1 figure. v2: references added; published version