BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Anisotropic Pressures in Contracting Universes - Kei Yamamoto\, DA
 MTP
DTSTART:20110204T130000Z
DTEND:20110204T140000Z
UID:TALK28435@talks.cam.ac.uk
CONTACT:Dr Sebastien Renaux-Petel
DESCRIPTION:In ekpyrotic or cyclic universe scenarios\, a contracting phas
 e of cosmic evolution with a fluid whose pressure exceeds its energy densi
 ty plays an important role to account for the observed isotropy of our uni
 verse. In this talk\, I will present a simple model in which such an ultra
 -stiff fluid is allowed to have anisotropic pressures and show that it ten
 ds to deviate the universe from isotropy as it contracts. Dynamical system
 s method is employed to analytically investigate the full non-linear behav
 iour of the system.
LOCATION:Pavilion B Potter Room (B1.19)
END:VEVENT
END:VCALENDAR