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A Hagedorn temperature in post-inflationary dynamics?

Prashanth Jaikumar·Anupam Mazumdar
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Abstract

We consider the possibility of regarding the maximum temperature $\tm$ of a plasma of inflaton decay products as a Hagedorn temperature connected with the transition from an inflaton-dominated epoch to a radiation-dominated universe. Employing a ``bottom-up'' approach to inflaton decay, we show that the limiting temperature $T_{\rm H}\sim m_ϕ$, as obtained from a numerical analysis of the evolution equations, can also be understood theoretically in a Hagedorn picture of the phase transition.

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Prashanth Jaikumar, Anupam Mazumdar. 2003-09-22. A Hagedorn temperature in post-inflationary dynamics?. https://arxiv.org/abs/hep-ph/0309175

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