The Canonical Structure of Bigravity

Abstract

This work is motivated by an intention to make the theory of bigravity more comprehensible. Bigravity is a modification of the General Relativity (GR), maybe even the most natural one because it is based on the equivalence principle. The Hamiltonian formalism in tetrad variables transparently demonstrates the structure of bigravity

11 pages, 1 table, based on a talk given at the Fourth Zeldovich meeting, an international conference in honor of Ya. B. Zeldovich held in Minsk, Belarus on September 7--11, 2020

References in corpus (6)

• Resummation of Massive Gravity
• Interacting Spin-2 Fields
• Degrees of Freedom in Massive Gravity
• Absence of ghost in a new bimetric-matter coupling
• Analysis of constraints and their algebra in bimetric theory
• Geometric mean of bimetric spacetimes