Superfluid Density and Compressibility at the Superfluid-Mott Glass Transition

Author

Cameron Lerch
Thomas Vojta, Missouri University of Science and TechnologyFollow

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.)

Comments

This work was supported in part by the NSF under Grant Nos. DMR-1506152 and PHY-1125915.

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