Scalar field damping at high temperatures
Bödeker D, Nienaber J (2022)
arXiv:2205.14166.
Preprint | Englisch
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Bödeker, DietrichUniBi;
Nienaber, Jan
Einrichtung
Abstract / Bemerkung
The motion of a scalar field that interacts with a hot plasma, like the
inflaton during reheating, is damped, which is a dissipative process. At high
temperatures the damping can be described by a local term in the effective
equation of motion. The damping coefficient is sensitive to multiple
scattering. In the loop expansion its computation would require an all-order
resummation. Instead we solve an effective Boltzmann equation, similarly to the
computation of transport coefficients. For an interaction with another scalar
field we obtain a simple relation between the damping coefficient and the bulk
viscosity, so that one can make use of known results for the latter. The
numerical prefactor of the damping coefficient turns out to be rather large, of
order $ 10 ^ 4 $.
Erscheinungsjahr
2022
Zeitschriftentitel
arXiv:2205.14166
Page URI
https://pub.uni-bielefeld.de/record/2963751
Zitieren
Bödeker D, Nienaber J. Scalar field damping at high temperatures. arXiv:2205.14166. 2022.
Bödeker, D., & Nienaber, J. (2022). Scalar field damping at high temperatures. arXiv:2205.14166
Bödeker, D., and Nienaber, J. (2022). Scalar field damping at high temperatures. arXiv:2205.14166.
Bödeker, D., & Nienaber, J., 2022. Scalar field damping at high temperatures. arXiv:2205.14166.
D. Bödeker and J. Nienaber, “Scalar field damping at high temperatures”, arXiv:2205.14166, 2022.
Bödeker, D., Nienaber, J.: Scalar field damping at high temperatures. arXiv:2205.14166. (2022).
Bödeker, Dietrich, and Nienaber, Jan. “Scalar field damping at high temperatures”. arXiv:2205.14166 (2022).
Export
Markieren/ Markierung löschen
Markierte Publikationen
Quellen
arXiv: 2205.14166
Inspire: 2089066