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SUMMARY:Spontaneous Symmetry Probing - Federico Piazza\, PCCP\, University
  Paris 7
DTSTART:20120220T130000Z
DTEND:20120220T140000Z
UID:TALK35378@talks.cam.ac.uk
CONTACT:Dr Sebastien Renaux-Petel
DESCRIPTION:I will give account of a recent paper and ongoing projects in 
 which the general implications of symmetries in the case of time-dependent
  field states are studied. In particular\, I will be interested in field c
 onfigurations that spontaneously “probe” the symmetry—or one of the 
 symmetries—in the sense that they evolve in time along a symmetry direct
 ion in field space. This situation should capture certain essential featur
 es of generic early universe inflationary models without committing too mu
 ch with their microphysical details. The same formalism applies also to ot
 her—apparently disparate—situations\, such as many-body systems at fin
 ite chemical potential\, or more generally\, at `finite conserved charge'.
LOCATION:CMS\, Pav.B\, CTC Common Room (B1.19)
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