GPPU Seminar
Towards consistent graviton’s mass
Rampei Kimura
(Waseda University)
Date
10:00-12:00, November 17th, 2020Place
The seminar will be given via Zoom. Register in advance for this meeting:https://us02web.zoom.us/meeting/register/tZ0sceyoqTssGNyPTVSr2t_ZAyUyr3cvrWpN map
Abstract
The construction of consistent theories of a massive spin-2 field has attracted considerable attention since Fierz and Pauli proposed linearized massive gravity in 1939. Unfortunately, the appearance of an extra ghost degree of freedom is inevitable in Fierz-Pauli (FP) theory for a long time. Surprisingly, in 2010 de Rham and Gabadadze constructed a ghost-free theory by adding appropriate combinations of nonlinear potential terms. In this talk, I will review massive gravity starting from the FP theory and its problem, nonlinear massive gravity. Then I will briefly explain consistent theories of massive gravity that we proposed recently and their current status in a cosmological context.
Point
GASP 1Contact: Yusuke Tanimura (tanimura [at] nucl.phys.tohoku.ac.jp)