Publications

Citation

BibTex format

@article{de:2022:03/053,
author = {de, Rham C and Garcia-Saenz, S and Heisenberg, L and Pozsgay, V},
doi = {03/053},
journal = {Journal of Cosmology and Astroparticle Physics},
pages = {1--50},
title = {Cosmology of extended proca-nuevo},
url = {http://dx.doi.org/10.1088/1475-7516/2022/03/053},
volume = {2022},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Proca-Nuevo is a non-linear theory of a massive spin-1 field which enjoys a non-linearly realized constraint that distinguishes it among other generalized vector models. We show that the theory may be extended by the addition of operators of the Generalized Proca class without spoiling the primary constraint that is necessary for consistency, allowing to interpolate between Generalized Proca operators and Proca-Nuevo ones. The constraint is maintained on flat spacetime and on any fixed curved background. Upon mixing extended Proca-Nuevo dynamically with gravity, we show that the constraint gets broken in a Planck scale suppressed way. We further prove that the theory may be covariantized in models that allow for consistent and ghost-free cosmological solutions. We study the models in the presence of perfect fluid matter, and show that they describe the correct number of dynamical variables and derive their dispersion relations and stability criteria. We also exhibit, in a specific set-up, explicit hot Big Bang solutions featuring a late-time self-accelerating epoch, and which are such that all the stability and subluminality conditions are satisfied and where gravitational waves behave precisely as in General Relativity.
AU  - de,Rham C
AU  - Garcia-Saenz,S
AU  - Heisenberg,L
AU  - Pozsgay,V
DO  - 03/053
EP  - 50
PY  - 2022///
SN  - 1475-7516
SP  - 1
TI  - Cosmology of extended proca-nuevo
T2  - Journal of Cosmology and Astroparticle Physics
UR  - http://dx.doi.org/10.1088/1475-7516/2022/03/053
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000776994500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://iopscience.iop.org/article/10.1088/1475-7516/2022/03/053
UR  - http://hdl.handle.net/10044/1/106019
VL  - 2022
ER  -
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