2012/07/31 by Bum-Hoon Lee, Xiaojian Bai, Matthias C. Wapler
Physics and Astronomy · #Baryon #Black Holes and Theoretical Physics #Deconfinement #Geometry #Particle physics #Phase transition #Physics #Quantum #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quantum, superfluid, helium dynamics #Relaxation (psychology) #Scaling #cond-mat.quant-gas #cond-mat.str-el #hep-th
paper · pdf · doi:10.1007/jhep10(2012)015
published as JHEP 1210 (2012) 015 · 21 pages, 10 figures, extra paragraph and figure are added in response to referee's comments
arxiv created 2012/09/06 · openalex publication_date 2012/10/01 · arxiv updated 2014/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study physical properties of strongly coupled massive quantum liquids from their spectral functions using the AdS/CFT correspondence. The generic model that we consider is dense, heavy fundamental matter coupled to SU(Nc) super Yang-Mills theory at finite temperature above the deconfinement phase transition but below the scale set by the baryon number density. In this setup, we study the current-current correlators of the baryon number density using new techniques that employ a scaling behavior in the dual geometry. Our results, the AC conductivity, the quasi-particle spectrum and the Drude-limit parameters like the relaxation time are simple temperature-independent expressions that depend only on the mass-squared to density ratio and display a crossover between a baryon- and meson-dominated regime. We concentrated on the (2+1)-dimensional defect case, but in principle our results can also be generalized straightforwardly to other cases.