Einstein's gravity versus String Gravity


Zwiebach, B. (2013). Einstein's gravity versus String Gravity. Perimeter Institute. https://pirsa.org/13010103


Zwiebach, Barton. Einstein's gravity versus String Gravity. Perimeter Institute, Jan. 16, 2013, https://pirsa.org/13010103


          @misc{ pirsa_13010103,
            doi = {},
            url = {https://pirsa.org/13010103},
            author = {Zwiebach, Barton},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Einstein{\textquoteright}s gravity versus String Gravity},
            publisher = {Perimeter Institute},
            year = {2013},
            month = {jan},
            note = {PIRSA:13010103 see, \url{https://pirsa.org}}


Gravity in string theory is a generalized version of Einstein's theory with some  universal features that call for a reformulation of the key geometrical concepts.  In addition to the metric tensor, for example, string theory contains an antisymmetric tensor and a dilaton that allow for extra symmetries. A new branch of mathematics, Generalized Geometry, suggests a framework that finds a realization in the recent Double Field Theory formulation of string gravity. I will describe the main ideas, the progress, and the mysteries that remain in the search for a proper description of string gravitation.