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SUMMARY:Gravitational waves from first order phase transitions - Chiara Ca
 prini\, CEA &amp\; CNRS
DTSTART:20120511T120000Z
DTEND:20120511T130000Z
UID:TALK37623@talks.cam.ac.uk
CONTACT:Xingang Chen
DESCRIPTION:Gravitational waves can represent a unique probe of the very e
 arly\nuniverse. This seminar concentrates on a particular source of a stoc
 hastic\nbackground of gravitational waves\, namely a primordial first orde
 r phase\ntransition. The gravitational wave signal is generated by the col
 lision of\nthe broken phase bubbles and by the magnetohydrodynamic turbule
 nce in the\nprimordial plasma stirred by the bubble collision. It will be 
 shown how\nthe main features of the gravitational wave spectrum can be pre
 dicted by\ngeneral arguments based on the source properties\, such as its 
 time\nevolution and space structure. Detection prospects will be discussed
 \nespecially for the electroweak phase transition\, in connection with the
 \nnew NGO/eLISA mission.
LOCATION:Pavilion B Potter Room (B1.19)
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