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arxiv: 1012.4753 · v3 · pith:HZPXBT2Bnew · submitted 2010-12-21 · ✦ hep-th · hep-ph· nucl-th

Thermalization of Strongly Coupled Field Theories

V. Balasubramanian , A. Bernamonti , J. de Boer , N. Copland , B. Craps , E. Keski-Vakkuri , B. M\"uller , A. Sch\"afer
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M. Shigemori W. Staessens
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classification ✦ hep-th hep-phnucl-th
keywords coupledentanglemententropystronglyfieldtheoriesthermalizationthermalizes
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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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