Gravitational reheating at strong coupling

DOI10.1007/JHEP07(2023)159arXiv2304.11195OpenAlexW4385075158MaRDI QIDQ6055770

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Publication date: 29 September 2023

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Abstract: We use gauge/gravity correspondence to study the gravitational reheating of strongly coupled gauge theories in the rapid exit from the long inflationary (de Sitter) phase. We estimate the maximal reheating temperature of holographic models in $d$-spatial dimensions, which scale invariance is explicitly broken by a source term for an operator ${calO}_{D}elta$ of dimension $fracd2+frac12<Delta<d+1$, as well as the top-down $calN=2^{*}$ and the cascading gauge theories. The reheating is most efficient when the inflationary phase Hubble constant is much larger than the mass scale of the conformal symmetry breaking of the theory, and for theories with the conformal symmetry breaking operators that are close to marginal.

Full work available at URL: https://arxiv.org/abs/2304.11195

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