Bigravity in Hamiltonian formalism: The tetrad approach

• Published in: Theoretical and mathematical physics Vol. 182; no. 2; pp. 294 - 307
• Main Author: Soloviev, V. O.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.02.2015
• Subjects: Applications of Mathematics; Mathematical and Computational Physics; Physics; Physics and Astronomy; Theoretical; bigravity; bimetric gravity; massive gravity; theory gravity; Hamiltonian formalism

We use the tetrad formalism to calculate a matrix square root occurring in the de Rham-Gabadadze-Tolley potential. In the minimal case, we obtain the constraints and their algebra. We show that the number of gravitational degrees of freedom corresponds to the massless and massive gravity fields. The...