Cosmological particle creation in a hadronic fluid
General Relativity and Quantum Cosmology
2015-06-12 v3 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
Acoustic perturbations in an expanding hadronic fluid at temperatures below the chiral transition point represent massless pions propagating in curved spacetime geometry. In comoving coordinates the corresponding analog metric tensor describes a hyperbolic FRW spacetime. We study the analog cosmological particle creation of pions below the critical point of the chiral phase transition. We compare the cosmological creation spectrum with the spectrum of analog Hawking radiation at the analog trapping horizon.
Cite
@article{arxiv.1412.3977,
title = {Cosmological particle creation in a hadronic fluid},
author = {Neven Bilic and Dijana Tolic},
journal= {arXiv preprint arXiv:1412.3977},
year = {2015}
}
Comments
13 pages, 4 figures, revised to match the version published in Phys. Rev. D., section IIB rewritten, section IIIC expanded, discussion on adiabaticity expanded and clarified, three references added, results unchanged