Thermalization of Strongly Coupled Field Theories

Details Thermalization of Strongly Coupled Field Theories Thermalization of Strongly Coupled Field Theories

2010-12-21

arxiv.org/abs/1012.4753v3

Phys.Rev.Lett.106:191601,2011

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, 4 figures + 1 figure (v2), v2: new results added on entanglement entropy in 4d field theories and on entropy growth r

Scientific paper

10.1103/PhysRevLett.106.191601

Using the AdS/CFT correspondence, we probe the scale-dependence of thermalization in strongly coupled field theories following a quench via saddlepoint calculations of 2-point functions, Wilson loops and entanglement entropy in $d=2,3,4$. For homogeneous initial conditions, the entanglement entropy thermalizes slowest, and sets a timescale for equilibration that saturates a causality bound. The growth rate of entanglement entropy density is nearly volume-independent for small volumes, but slows for larger volumes. In this strongly coupled setting, the UV thermalizes first.

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