55 citations · 110 across the 5 of their papers we have counts for
5 papers
Localization of the Higgs mode at the superfluid-Mott glass transition
Jack Crewse, Thomas Vojta
The amplitude (Higgs) mode near the two-dimensional superfluid-Mott glass quantum phase transition is studied. We map the Bose-Hubbard Hamiltonian of disordered interacting bosons…
Semiconductor-Bloch Formalism: Derivation and Application to High-Harmonic Generation from Dirac Fermions
Jan Wilhelm, Patrick Grössing, Adrian Seith +5
We rederive the semiconductor Bloch equations emphasizing the close link to the Berry connection. Our rigorous derivation reveals the existence of two further contributions to the…
Collective modes at a disordered quantum phase transition
Martin Puschmann, Jack Crewse, Jose A. Hoyos +1
We study the collective excitations, i.e., the Goldstone (phase) mode and the Higgs (amplitude) mode, near the superfluid--Mott glass quantum phase transition in a two-dimensional…
Quantum critical behavior of a three-dimensional superfluid-Mott glass transition
Jack Crewse, Cameron Lerch, Thomas Vojta
The superfluid to insulator quantum phase transition of a three-dimensional particle-hole symmetric system of disordered bosons is studied. To this end, a site-diluted quantum roto…
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…