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Title: Spin wave theory for 2D disordered hard-core bosons

Abstract

A spin-wave (SW) approach for hard-core bosons is presented to treat the problem of two dimensional boson localization in a random potential. After a short review of the method to compute 1/S-corrected observables, the case of random on-site energy is discussed. Whereas the mean-field solution does not display a Bose glass (BG) phase, 1/S corrections do capture BG physics. In particular, the localization of SW excitations is discussed through the inverse participation ratio.

Authors:
; ;  [1]
  1. Laboratoire de Physique Théorique, Université de Toulouse, UPS, (IRSAMC), Toulouse (France)
Publication Date:
OSTI Identifier:
22308251
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1610; Journal Issue: 1; Conference: TIDS15: 15. international conference on transport in interacting disordered systems, Sant Feliu de Guixols (Spain), 1-5 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BOSONS; EXCITATION; MATHEMATICAL SOLUTIONS; MEAN-FIELD THEORY; POTENTIALS; RANDOMNESS; SPIN WAVES

Citation Formats

Zúñiga, Juan Pablo Álvarez, Lemarié, Gabriel, and Laflorencie, Nicolas. Spin wave theory for 2D disordered hard-core bosons. United States: N. p., 2014. Web. doi:10.1063/1.4893518.
Zúñiga, Juan Pablo Álvarez, Lemarié, Gabriel, & Laflorencie, Nicolas. Spin wave theory for 2D disordered hard-core bosons. United States. doi:10.1063/1.4893518.
Zúñiga, Juan Pablo Álvarez, Lemarié, Gabriel, and Laflorencie, Nicolas. Wed . "Spin wave theory for 2D disordered hard-core bosons". United States. doi:10.1063/1.4893518.
@article{osti_22308251,
title = {Spin wave theory for 2D disordered hard-core bosons},
author = {Zúñiga, Juan Pablo Álvarez and Lemarié, Gabriel and Laflorencie, Nicolas},
abstractNote = {A spin-wave (SW) approach for hard-core bosons is presented to treat the problem of two dimensional boson localization in a random potential. After a short review of the method to compute 1/S-corrected observables, the case of random on-site energy is discussed. Whereas the mean-field solution does not display a Bose glass (BG) phase, 1/S corrections do capture BG physics. In particular, the localization of SW excitations is discussed through the inverse participation ratio.},
doi = {10.1063/1.4893518},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1610,
place = {United States},
year = {Wed Aug 20 00:00:00 EDT 2014},
month = {Wed Aug 20 00:00:00 EDT 2014}
}