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SUMMARY:Gravitational wave bursts from cosmic strings with junctions - Ale
 jandro Bohe\, APC Paris
DTSTART:20101119T130000Z
DTEND:20101119T140000Z
UID:TALK27445@talks.cam.ac.uk
CONTACT:Dr Sebastien Renaux-Petel
DESCRIPTION:Cosmic strings are predicted to form in a wide variety of mode
 ls in the early universe but so far\, they have never been observed. The m
 ost promising way to do so relies on their emission of gravitational wave 
 bursts (at small scale features on the strings called cusps and kinks) whi
 ch could be detectable by the current generation of interferometers (LIGO-
 VIRGO) or by the future space interferometer LISA.\n\nIn this seminar\, I 
 will focus on a particular class of models of cosmic strings in which junc
 tions (points at which several strings are attached) can form. I will show
  that strings with junctions generally contain many more kinks than ordina
 ry cosmic strings. Consequently\, the signal from a network with junctions
  differs significantly from the predictions made by Damour and Vilenkin fo
 r ordinary strings. I will discuss the observability of this signal and th
 e associated constraints on the parameter space of the strings. 
LOCATION:Pavilion B Potter Room (B1.19)
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