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arXiv · 2305.00183

Dynamical mass generation of spin-2 fields in de Sitter space for an $O(N)$ symmetric model at large $N$

Nahomi Kan·Kiyoshi Shiraishi
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Abstract

We consider the strong-coupling phase in a model of $O(N)$ spin-2 field theory in de Sitter spacetime and the effective mass of spin-2 fields therein. In the strong-coupling phase, the Higuchi bound limits the mass parameter in the theory. The analysis using the large $N$ approximation finds the critical value of the mass parameter with numerical calculation.

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Nahomi Kan, Kiyoshi Shiraishi. 2023-04-29. Dynamical mass generation of spin-2 fields in de Sitter space for an $O(N)$ symmetric model at large $N$. https://doi.org/10.1103/physrevd.108.105022

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