主講人：Dr. Martin Krssak，Yangzhou University
主講人介紹：Martin krssak obtained his PhD from Bielefeld University, Germany in 2013. Currently he is a Postdoctoral Fellow at Center for Gravitation and Cosmology, Yangzhou University. His research interests include: mathematical foundations of gravity theories, differential geometry, teleparallel gravity, modified gravity, f(T) gravity, holography, gauge/gravity dualities, conformal gravity, non-local effects in gravity.
內容介紹：Teleparallel theories are an intriguing framework to study gravity where the usual Riemannian geometry is replaced by the so-called teleparallel geometry and leads to description of the spacetime geometry in terms of torsion rather than curvature. In one particular case known as the teleparallel equivalent of general relativity, we can formulate a theory dynamically equivalent to general relativity that allows us to study general relativity from a novel perspective that offers many interesting insights. Recently, teleparallel theories of gravity became a popular topic as it was realized that modified teleparallel gravity theories are a completely new class of theories not equivalent to modifications of the standard general relativity and have many interesting features and rich phenomenology; the most popular one being the f(T) gravity model. In this talk I will give a short introduction to teleparallel theories and focus on the key aspects and novelties that differentiate it with the standard theories of gravity. Then I will review the most important results and point out the most important open questions that need to be addressed.