Bose and Mott glass phases in dimerized quantum antiferromagnets
Bose and Mott glass phases in dimerized quantum antiferromagnets
We examine the effects of disorder on dimerized quantum antiferromagnets in a magnetic field, using the mapping to a lattice gas of hard-core bosons with finite-range interactions. Combining a strong-coupling expansion, the replica method, and a one-loop renormalization-group analysis, we investigate the nature of the glass phases formed. We find …