Quantum phase transitions in semilocal quantum liquids
Name
PhysRevD.91.025024.pdf
Size
1.7 MB
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Adobe PDF
Checksum (MD5)
9f5ac08940151dc1b634d94bb0ea0efa
Author(s)
Iqbal, Nabil
Liu, Hong
Mezei, Mark Koppany
Date Issued
January 2015
Journal
Physical Review D
Publisher
American Physical Society
Citation
Iqbal, Nabil, Hong Liu, and Márk Mezei. “Quantum Phase Transitions in Semilocal Quantum Liquids.” Phys. Rev. D 91, no. 2 (January 2015). © 2015 American Physical Society
Version
Final published version
Abstract
We consider several types of quantum critical phenomena from finite-density gauge-gravity duality which to different degrees lie outside the Landau-Ginsburg-Wilson paradigm. These include: (i) a “bifurcating” critical point, for which the order parameter remains gapped at the critical point, and thus is not driven by soft order parameter fluctuations. Rather it appears to be driven by “confinement” which arises when two fixed points annihilate and lose conformality. On the condensed side, there is an infinite tower of condensed states and the nonlinear response of the tower exhibits an infinite spiral structure; (ii) a “hybridized” critical point which can be described by a standard Landau-Ginsburg sector of order parameter fluctuations hybridized with a strongly coupled sector; (iii) a “marginal” critical point which is obtained by tuning the above two critical points to occur together and whose bosonic fluctuation spectrum coincides with that postulated to underly the “Marginal Fermi Liquid” description of the optimally doped cuprates.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.91.025024
