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.
- Received 26 October 2006
- Publisher error corrected 18 April 2007
DOI:https://doi.org/10.1103/PhysRevLett.98.166801
©2007 American Physical Society
Corrections
18 April 2007