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cond-mat.quant-gas2016★ 2 cited
Superfluid-Mott glass quantum multicritical point on a percolating lattice
Martin Puschmann, Thomas Vojta
We employ large-scale Monte Carlo simulations to study a particle-hole symmetric site-diluted quantum rotor model in two dimensions. The ground state phase diagram of this system f…
cond-mat.quant-gas2016★ 31 cited
Quantum critical behavior of the superfluid-Mott glass transition
Thomas Vojta, Jack Crewse, Martin Puschmann +2
We investigate the zero-temperature superfluid to insulator transitions in a diluted two-dimensional quantum rotor model with particle-hole symmetry. We map the Hamiltonian onto a…