Superfluid density and compressibility at the superfluid-Mott glass transition
arXiv:1712.08245 · doi:10.1140/epjst/e2018-800002-2
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.
5 pages, 3 pdf figures, builds on arXiv:1607.01860, intended for special volume of EPJST dedicated to FQMT17 conference
References in corpus (9)
- Rare region effects at classical, quantum, and non-equilibrium phase transitions
- Strongly interacting bosons in a disordered optical lattice
- Quantum Griffiths effects and smeared phase transitions in metals: theory and experiment
- Quantum Griffiths effects in itinerant Heisenberg magnets
- Particle-hole symmetry and the dirty boson problem
- Quantum phase transitions of the diluted O(3) rotor model
- Quantum critical behavior of the superfluid-Mott glass transition
- Emerging criticality in the disordered three-color Ashkin-Teller model
- Bose and Mott Glass Phases in Dimerized Quantum Antiferromagnets