To bounce or not to bounce in generalized Proca theory and beyond
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2025)124
Abstract: It is notoriously difficult to construct a stable non-singular bouncing cosmology that avoids all possible instabilities throughout the entire evolution of the universe. In this work, we explore whether a non-singular bounce driven by a… read more here.
Keywords: proca theory; bounce; generalized proca; non singular ... See more keywords
Particle-like solutions in the generalized SU(2) Proca theory
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/04/032
Abstract: The generalized SU(2) Proca theory is a vector-tensor modified gravity theory where the action is invariant under both diffeomorphisms and global internal transformations of the SU(2) group. This work constitutes the first approach to investigate… read more here.
Keywords: theory; generalized proca; like solutions; particle like ... See more keywords
Stability conditions in the generalized SU(2) Proca theory
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DOI: 10.1103/physrevd.100.084048
Abstract: Under the same spirit of the Galileon-Horndeski theories and their more modern extensions, the generalized SU(2) Proca theory was built by demanding that its action may be free of the Ostrogradski's instability. Nevertheless, the theory… read more here.
Keywords: conditions generalized; theory; stability conditions; proca theory ... See more keywords