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AdS/CFT correspondence and the reheating of the brane-universe

Eleftherios Papantonopoulos1,2 and Vasilis Zamarias2

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We present a mechanism for exit from inflation and reheating using the AdS/CFT correspondence. A cosmological evolution is induced on a probe D3-brane as it moves in a black D-brane background of type-0 string theory. If the tachyon field is non zero, inflation is induced on the brane-universe, with the equation of state parameter in the range −1 < w < −1/3 depending on the position of the probe brane in the bulk. As the probe brane approaches the horizon of the background black hole, the inflation rate decreases and the value of w gets larger. At some critical distance away from the horizon, inflation ends. When the brane-universe reaches the horizon, the conformal invariance is restored, the background geometry becomes AdS5 × S5, and the brane-universe feels the CFT thermal radiation and reheats.


Keywords

AdS-CFT and dS-CFT Correspondence

Tachyon Condensation

D-branes

 

E-print Number: hep-th/0408227

Cited: by |

Refers: to

PACS

11.25.Hf Conformal field theory, algebraic structures

11.25.Uv D branes

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

04.70.-s Physics of black holes

Subjects

Gravitation and cosmology

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 10 (October 2004)

Received 13 September 2004, accepted for publication 21 October 2004

Published 12 November 2004



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