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Bi-galileon theory II: phenomenology
Antonio Padilla, Paul M. Saffin, Shuang-Yong Zhou
We continue to introduce bi-galileon theory, the generalisation of the single galileon model introduced by Nicolis et al. The theory contains two coupled scalar fields and is descr…
Multi-galileons, solitons and Derrick's theorem
Antonio Padilla, Paul M. Saffin, Shuang-Yong Zhou
The field theory Galilean symmetry, which was introduced in the context of modified gravity, gives a neat way to construct Lorentz-covariant theories of a scalar field, such that t…
Bi-galileon theory I: motivation and formulation
Antonio Padilla, Paul M. Saffin, Shuang-Yong Zhou
We introduce bi-galileon theory, the generalisation of the single galileon model introduced by Nicolis et al. The theory contains two coupled scalar fields and is described by a La…