Goldstone's Theorem and Hamiltonian of Multi-galileon Modified Gravity
High Energy Physics - Theory
2011-03-21 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
The galileon model was recently proposed to locally describe a class of modified gravity theories, including the braneworld DGP model. We discuss spontaneous symmetry breaking of the self-accelerating branch in a multi-galileon theory with internal global symmetries. We show a modified version of Goldstone's theorem is applicable to the symmetry breaking pattern and discuss its implications. We also derive the Hamiltonian of a general multi-galileon theory and discuss its implications.
Keywords
Cite
@article{arxiv.1011.0863,
title = {Goldstone's Theorem and Hamiltonian of Multi-galileon Modified Gravity},
author = {Shuang-Yong Zhou},
journal= {arXiv preprint arXiv:1011.0863},
year = {2011}
}
Comments
13 pages, 1 figure; To appear in PRD