Published October 25, 2010
| Published
Journal Article
Open
Possible Exciton Bose Liquid in a Hard-Core Boson Ring Model
- Creators
- Tay, Tiamhock
-
Motrunich, Olexei I.
Chicago
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Abstract
We present a quantum Monte Carlo study of a hard-core boson model with ring-only exchanges on a square lattice, where a K_1 term acts on 1×1 plaquettes and a K_2 term acts on 1×2 and 2×1 plaquettes. At half-filling, the phase diagram reveals charge density wave for small K_2, valence bond solid for intermediate K_2, and possibly for large K_2 the novel exciton Bose liquid (EBL) phase first proposed by Paramekanti et al [Phys. Rev. B 66, 054526 (2002)]. Away from half-filling, the EBL phase is present already for intermediate K_2 and remains stable for a range of densities below 1/2 before phase separation sets in at lower densities.
Additional Information
© 2010 The American Physical Society. Received 28 July 2010; published 25 October 2010. We are thankful to M. P. A. Fisher for inspiring discussions and encouragement throughout this work. The research is supported by the NSF through Grant No. DMR-0907145 and the A. P. Sloan Foundation. We also acknowledge using the IT2 cluster at the Caltech CACR.Attached Files
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Additional details
- Eprint ID
- 20740
- Resolver ID
- CaltechAUTHORS:20101110-105823754
- NSF
- DMR-0907145
- Alfred P. Sloan Foundation
- Created
-
2010-11-16Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field