Superfluid Density and Compressibility at the Superfluid-Mott Glass Transition
Abstract
Systems of disordered interacting bosons with particle-hole symmetry can undergo a quantum phase transition between the superfluid phase and the Mott glass phase which is a gapless incompressible insulator. We employ large-scale Monte Carlo simulations of a two-dimensional site-diluted quantum rotor model to investigate the properties of the superfluid density and the compressibility at this transition. We find that both quantities feature power-law critical behavior with exponents governed by generalized Josephson relations.
Recommended Citation
C. Lerch and T. Vojta, "Superfluid Density and Compressibility at the Superfluid-Mott Glass Transition," European Physical Journal: Special Topics, vol. 227, no. 15-16, pp. 2275 - 2280, Springer Verlag, Mar 2019.
The definitive version is available at https://doi.org/10.1140/epjst/e2018-800002-2
Department(s)
Physics
Research Center/Lab(s)
Center for High Performance Computing Research
Sponsor(s)
National Science Foundation (U.S.)
International Standard Serial Number (ISSN)
1951-6355; 1951-6401
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2019 Springer Verlag, All rights reserved.
Publication Date
01 Mar 2019
Comments
This work was supported in part by the NSF under Grant Nos. DMR-1506152 and PHY-1125915.