The Sound of Strongly Coupled Field Theories: Quasinormal Modes In AdS

Details The Sound of Strongly Coupled Field Theories: Quasinormal Modes In AdS The Sound of Strongly Coupled Field Theories: Quasinormal Modes In AdS

2012-02-16

arxiv.org/abs/1202.3550v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 8 figures, 1 cow, Contribution to Proceedings of ERE2011, v2: minor changes, refs added

Scientific paper

The AdS/CFT correspondence has developed over the last years into a very useful and powerful tool for studying strongly coupled field theories at finite temperature and density. Of particular interest is the regime of near equilibrium real time evolution that can be captured via linear response theory. The AdS/CFT correspondence allows the calculation of retarded two point functions of gauge invariant operators by studying fluctuations around asymptotically AdS black holes. A major role is played by the poles of these holographic response functions: the quasinormal frequencies. I will review the applications of these ideas to the hydrodynamics of the strongly coupled quark gluon plasma and the holographic realization of strongly coupled superfluids.

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