Séminaire / Seminar GReCO |
| « Spontaneous Symmetry Probing » |
|
Federico Piazza |
| 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 configurations that spontaneously "probe" the symmetry — or one of the symmetries — in the sense that they evolve in time along a symmetry direction in field space. This situation should capture certain essential features of generic early universe inflationary models without committing too much with their microphysical details. The same formalism applies also to other — apparently disparate — situations, such as many-body systems at finite chemical potential, or more generally, at 'finite conserved charge'. |
|
lundi 27 février 2012 - 11:00 Salle des séminaires François Arago Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |