Primordial gravitational waves from spontaneous Lorentz symmetry breaking

We study the effect of Spontaneous Lorentz Symmetry Breaking (SLSB) on Primordial Gravitational Waves (PGWs) generated during inflation. The SLSB is induced by a time-like Bumblebee vector field which is non-minimally coupled to the Ricci tensor in the Friedmann-Lemaître-Robertson-Walker background....

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Bibliographic Details
Main Authors: Mohsen Khodadi, Gaetano Lambiase, Leonardo Mastrototaro, Tanmay Kumar Poddar
Format: Article
Language:English
Published: Elsevier 2025-08-01
Series:Physics Letters B
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Online Access:http://www.sciencedirect.com/science/article/pii/S0370269325003582
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