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Cosmological Particle Production at Strong Coupling · Around

2015

Cosmological Particle Production at Strong Coupling

Rangamani, Mukund, Rozali, Moshe, Van Raamsdonk, Mark

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We study the dynamics of a strongly-coupled quantum field theory in a cosmological spacetime using the holographic AdS/CFT correspondence.

Specifically we consider a confining gauge theory in an expanding FRW universe and track the evolution of the stress-energy tensor during a period of expansion, varying the initial temperature as well as the rate and amplitude of the expansion.
At strong coupling, particle production is inseparable from entropy production.
As a result, we find significant qualitative differences from the weak coupling results: at strong coupling the system rapidly loses memory of its initial state as the amplitude is increased.

Built on

N. Birrell and P. Davies, Quantum Fields in Curved Space
1982
Earlier work this paper cites.
S. W. Hawking, T. Hertog, and H. S. Reall, Trace anomaly driven inflation
2001
Earlier work this paper cites.
S. de Haro, S. N. Solodukhin, and K. Skenderis, Holographic reconstruction of space-time and renormalization in the AdS / CFT correspondence
2001
Earlier work this paper cites.

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