String Theory Seminars
Infra red effects in de Sitter space
by Dr. Sameer Murthy (LPTHE, Paris)
Friday, December 3, 2010
from
to
(Asia/Kolkata)
at Colaba Campus ( A-304 )
at Colaba Campus ( A-304 )
Description |
I will discuss infra red effects in de Sitter space, in particular the much-discussed and confusing issues of divergences in interacting massive theories in a background de Sitter space. I will aim to reach and cover the two recent papers: 1) The IR stability of de Sitter QFT: results at all orders. Donald Marolf, Ian A. Morrison, . Oct 2010. Temporary entry e-Print: rXiv:1010.5327 [gr-qc] and 2) Correlators, Feynman diagrams, and quantum no-hair in deSitter spacetime. Stefan Hollands, . Oct 2010. 45pp. Temporary entry e-Print: arXiv:1010.5367 [gr-qc] As an (extended) background, I will try to review the following papers: -- A. M. Polyakov 0709.2899 [hep-th], 0912.5503 [hep-th]; -- S. Weinberg, hep-th/0506236 and hep-th/0605244; -- (If time permits) Starobinsky and Yokoyama astro-ph/9407016, Riotto and Sloth 0801.1845 [hep-ph]; Burgess, Holman, Leblond, Shandera, 0912.1608 [hep-th] A review of some of these issues may be found in Antoniadis, Mazur, Mottola gr-qc/0612068 and interesting further reading is: Burgess, Holman, Leblond, Shandera, 1005.3551 [hep-th] and Rajaraman, 1008.1271 [hep-th]. A slightly orthogonal, but nice review is in: Spradlin, Strominger, Volovich, hep-th/0110007 |
Organised by | Prof. Sandip Trivedi |