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CATEGORIES:DAMTP Friday GR Seminar
SUMMARY:Gravitational waves from first order phase transit
 ions - Chiara Caprini\, CEA &amp\; CNRS
DTSTART;TZID=Europe/London:20120511T130000
DTEND;TZID=Europe/London:20120511T140000
UID:TALK37623AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/37623
DESCRIPTION:Gravitational waves can represent a unique probe o
 f the very early\nuniverse. This seminar concentra
 tes on a particular source of a stochastic\nbackgr
 ound of gravitational waves\, namely a primordial 
 first order phase\ntransition. The gravitational w
 ave signal is generated by the collision of\nthe b
 roken phase bubbles and by the magnetohydrodynamic
  turbulence in the\nprimordial plasma stirred by t
 he bubble collision. It will be shown how\nthe mai
 n features of the gravitational wave spectrum can 
 be predicted by\ngeneral arguments based on the so
 urce properties\, such as its time\nevolution and 
 space structure. Detection prospects will be discu
 ssed\nespecially for the electroweak phase transit
 ion\, in connection with the\nnew NGO/eLISA missio
 n.
LOCATION:Pavilion B Potter Room (B1.19)
CONTACT:Xingang Chen
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