報告題目：Cosmological and Quantum Aspects of Antisymmetric Tensors
报 告 人：Sandeep Aashish IISER Bhopal (India)
主 持 人：張向東 教授
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.