title: Magnetothermoelectric response at a superfluid-Mott-insulator transition.
abstract: We investigate the finite temperature magnetothermoelectric response in the vicinity of a superfluid-Mott-insulator quantum phase transition. We focus on the particle-hole symmetric transitions of the Bose-Hubbard model, and combine Lorentz invariance arguments with quantum Boltzmann calculations. By means of an epsilon expansion, we find that a nonvanishing thermoelectric tensor and a finite thermal transport coefficient are supported in this quantum critical regime. We comment on the singular Nernst effect in this problem.
authors.affiliation: Rudolf Peierls Centre for Theoretical Physics, 1 Keble Road, Oxford, OX1 3NP, United Kingdom.
authors.forename: M J
authors.initials: MJ
authors.lastname: Bhaseen
authors.forename: A G
authors.initials: AG
authors.lastname: Green
authors.forename: S L
authors.initials: SL
authors.lastname: Sondhi