Non-mean-field quantum critical points from holography
Evans, Nick, Jensen, Kristan and Kim, Keun-Young (2010) Non-mean-field quantum critical points from holography. Physical Review D, 82, (10), 105012-[15pp]. (doi:10.1103/PhysRevD.82.105012).
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Description/Abstract
We construct a class of quantum critical points with non-mean-field critical exponents via holography. Our approach is phenomenological. Beginning with the D3/D5 system at nonzero density and magnetic field which has a chiral phase transition, we simulate the addition of a third control parameter. We then identify a line of quantum critical points in the phase diagram of this theory, provided that the simulated control parameter has dimension less than two. This line smoothly interpolates between a second-order transition with mean-field exponents at zero magnetic field to a holographic Berezinskii-Kosterlitz-Thouless transition at larger magnetic fields. The critical exponents of these transitions only depend upon the parameters of an emergent infrared theory. Moreover, the non-mean-field scaling is destroyed at any nonzero temperature. We discuss how generic these transitions are.
| Item Type: | Article |
|---|---|
| ISSNs: | 1550-7998 (print) 1089-4918 (electronic) |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Physical and Applied Science > Physics and Astronomy |
| Item ID: | 337320 |
| Date Deposited: | 24 Apr 2012 10:27 |
| Last Modified: | 26 Apr 2013 05:44 |
| Contributors: | Evans, Nick (Author) Jensen, Kristan (Author) Kim, Keun-Young (Author) |
| Date: | 15 November 2010 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/337320 |
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