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arXiv · 1705.00001

A Perturbative RS I Cosmological Phase Transition

Don Bunk·Jay Hubisz·Bithika Jain
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Abstract

We identify a class of Randall-Sundrum type models with a successful first order cosmological phase transition during which a 5D dual of approximate conformal symmetry is spontaneously broken. Our focus is on soft-wall models that naturally realize a light radion/dilaton and suppressed dynamical contribution to the cosmological constant. We discuss phenomenology of the phase transition after developing a theoretical and numerical analysis of these models both at zero and finite temperature. We demonstrate a model with a TeV-Planck hierarchy and with a successful cosmological phase transition where the UV value of the curvature corresponds, via AdS/CFT, to an $N$ of $20$, where 5D gravity is expected to be firmly in the perturbative regime.

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Don Bunk, Jay Hubisz, Bithika Jain. 2017-04-27. A Perturbative RS I Cosmological Phase Transition. https://doi.org/10.1140/epjc%2Fs10052-018-5529-2

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