Date-Time : Apr. 27 (Thu), 3:00pm
Place : R1029
Speaker : Wenliang Li
Institute : Kyung Hee University
Title : Colored gravity in the non-relativistic limit
Abstract : Colored gravity is an interacting theory of multiple spin-2 and spin-1 fields in three dimensions. In the Chern-Simons formulation, the gauge algebra is the tensor product of an isometry algebra gl(2)+gl(2) and a color algebra u(N). The isometry algebra is extended to an associative one by adding two abelian generators, which is interestingly analogous to the double central extensions in non-relativistic gravities. In this talk, I will discuss how to construct the colored versions of extended Bargmann gravity and extended Newton-Hooke gravity using Inonu-Wigner contractions. A classification of non-relativistic colored gravities is achieved based on some consistency conditions of the contraction procedure.