Quantum phase transitions with dynamical flavors

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http://hdl.handle.net/10138/184154

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Bea , Y , Jokela , N & Ramallo , A V 2016 , ' Quantum phase transitions with dynamical flavors ' Physical Review D , vol. 94 , no. 2 , 026003 . DOI: 10.1103/PhysRevD.94.026003

Title: Quantum phase transitions with dynamical flavors
Author: Bea, Yago; Jokela, Niko; Ramallo, Alfonso V.
Contributor: University of Helsinki, Particle Physics and Astrophysics
Date: 2016-07-07
Language: eng
Number of pages: 21
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/184154
Abstract: We study the properties of a D6-brane probe in the Aharony-Bergman-Jafferis-Maldacena (ABJM) background with smeared massless dynamical quarks in the Veneziano limit. Working at zero temperature and nonvanishing charge density, we show that the system undergoes a quantum phase transition in which the topology of the brane embedding changes from a black hole to a Minkowski embedding. In the unflavored background the phase transition is of second order and takes place when the charge density vanishes. We determine the corresponding critical exponents and show that the scaling behavior near the quantum critical point has multiplicative logarithmic corrections. In the background with dynamical quarks the phase transition is of first order and occurs at nonzero charge density. In this case we compute the discontinuity of several physical quantities as functions of the number N-f of unquenched quarks of the background.
Subject: ADS/CFT
MATTER
QCD
114 Physical sciences
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