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Cosmological evolution of the Dirac–Born–Infeld field

Zong-Kuan Guo and Nobuyoshi Ohta

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We investigate the cosmological evolution of the system of a Dirac–Born–Infeld field plus a perfect fluid. We analyze the existence and stability of scaling solutions for the anti-de Sitter throat and the quadratic potential. We find that the scaling solutions exist when the equation of state of the perfect fluid is negative and in the ultra-relativistic limit.


Keywords

cosmology of theories beyond the SM

inflation

string theory and cosmology

 

E-print Number: 0803.1013

Cited: by |

Refers: to

PACS

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

95.30.Tg Thermodynamic processes, conduction, convection, equations of state

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 04 (April 2008)

Received 23 February 2008, accepted for publication 7 April 2008

Published 24 April 2008



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