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Paper detail

The Big Bang as a Mirror: a Solution of the Strong CP Problem

We argue that the Big Bang can be understood as a type of mirror. We show how reflecting boundary conditions for spinors and higher spin fields are fixed by local Lorentz and gauge symmetry, and how a temporal mirror (like the Bang) differs from a spatial mirror (like the AdS boundary), providing a possible explanation for the observed pattern of left- and right-handed fermions. By regarding the Standard Model as the limit of a minimal left-right symmetric theory, we obtain a new, cosmological solution of the strong $CP$ problem, without an axion.

preprint2022arXivOpen access
Latham BoyleMartin TeuscherNeil Turok
astro-ph.COhep-phgr-qchep-th
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Latham BoyleMartin TeuscherNeil Turok

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