报告题目：Cosmological and Quantum Aspects of Antisymmetric Tensors

报告人：Sandeep Aashish  IISER Bhopal (India)

主持人：张向东   教授

报告时间：2019年6月28日（星期五）下午15:00

报告地点：18号楼二楼213室物理与光电学院学术报告厅

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               物理与光电学院

               2019年6月26日

报告摘要：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. 

报告人简介：Sandeep Aashish is a PhD student fromIISER 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.