Séminaire / Seminar GReCO |
| « The trans-Planckian question in cosmology, the dissipative case » |
|
Renaud Parentani |
| So far studies of the so-called trans-Planckian question of inflationary cosmology have been limited to the purely dispersive case, even though it is expected that dissipation should generically occur. We shall present the modifications of the settings which are necessary to handle dissipation in QFT. We shall see that unitarity and the canonical commutators are preserved. From this, we shall deduce sufficient criteria for the robustness of the power spectrum. |
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jeudi 14 octobre 2004 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |