[Lecture] Cosmological and quantum aspects of antisymmetric tensors


Title: Cosmological and quantum aspects of antisymmetric tensors
Speaker: Sandeep Aashish (IISER Bhopal)
Venue: Room 218, Building No.18, Wushan Campus 
Time: June 28, Friday, 15:00

Rank-2 antisymmetric tensors appear in the low energy limit of superstring models, and therefore it is interesting to study their properties in early universe. In this talk, we present an overview of our studies of the quantum and cosmological aspects of antisymmetric tensor. We use DeWitt-Vilkovisky's covariant effective action approach, which allows for inclusion of quantum gravitational effects in a gauge- and background- independent way, to study its quantization. As a first step towards studying cosmology, we study the viability of inflation driven by an antisymmetric tensor. We focus on analysing de-Sitter solutions, slow roll conditions and stability of field perturbations in FRW spacetime. 

Sandeep Aashish is a PhD student from IISER Bhopal India. His research is mainly related to studying quantum gravitational effects in cosmological models using covariant effective action approach. He published 6 papers until now.

Announced by the School of Physics and Optoelectronic Technology