Gravitational particle production of scalars: analytic and numerical approaches including early reheating
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2025)077
Abstract: Cosmological gravitational particle production (GPP) is a generic mechanism by which particles are produced during the inflationary epoch. In this work we consider the GPP of massive scalars in an effort to fully understand the… read more here.
Keywords: particle production; production scalars; gravitational particle; analytic numerical ... See more keywords
Analytic and Numerical Approaches for Depictive 3-loop Integrals using Sector Decomposition
Sign Up to like & getrecommendations! Published in 2024 at "Progress of Theoretical and Experimental Physics"
DOI: 10.1093/ptep/ptae122
Abstract: Four 3-loop two-point functions are studied analytically and numerically using a simplified sector decomposition method. The coefficients of the ultraviolet divergent part are determined analytically, and those of the finite part are computed numerically. The… read more here.
Keywords: analytic numerical; numerical approaches; loop; sector decomposition ... See more keywords