Regular Seminar Carlo Meneghelli (Oxford)

at:13:15
room K4.31 | abstract: Any four dimensional N=2 superconformal field theory (SCFT) contains a subsector of local operator which is isomorphic to a two dimensional chiral algebra. If the 4d theory possesses N=3 or N= 4 superconformal symmetry, the corresponding chiral algebra is an extension the N=2 or (small) N=4 super-Virasoro algebra respectively. In this talk I will present some results on the classification of N=4 chiral algebras and discuss if they can correspond to a 4d theory. |

Regular Seminar Alexandros Anastasiou (Nordita)

at:14:00
room G.O. Jones 610 | abstract: Squaring involves the tensoring between the state content of two super Yang-Mills (YM) theories to obtain the state content of a supergravity theory. In the first part of this talk I will discuss how understanding the YM origin of global gravitational symmetries is a powerful tool towards classifying gravity theories which admit such a factorisation. In the second part I will discuss how studying the YM origin of local gravitational symmetries can lead to a field dictionary through which the gravitational equations of motion are derived from the YM ones. |