Gravitational wave background from Standard Model physics: complete leading order

Journal of High Energy Physics

M. Laine¹  G. Jackson¹  J. Ghiglieri²  Y. Zhu³ 

[1] AEC, Institute for Theoretical Physics, University of Bern, Sidlerstrasse 5, CH-3012, Bern, Switzerland;SUBATECH, Université de Nantes, IMT Atlantique, IN2P3/CNRS, BP 20722, 4 rue Alfred Kastler, La Chantrerie, 44307, Nantes, France;Wetzlar, Germany;

关键词: Thermal Field Theory;    Cosmology of Theories beyond the SM;    Resummation;    Quark-Gluon Plasma;   

DOI  :  10.1007/JHEP07(2020)092

来源: Springer

【 摘 要 】

We compute the production rate of the energy density carried by gravitational waves emitted by a Standard Model plasma in thermal equilibrium, consistently to leading order in coupling constants for momenta k ∼ πT. Summing up the contributions from the full history of the universe, the highest temperature of the radiation epoch can be constrained by the so-called Neff parameter. The current theoretical uncertainty ∆Neff≤ 10−3 corresponds to Tmax≤ 2 × 1017 GeV. In the course of the computation, we show how a subpart of the production rate can be determined with the help of standard packages, even if subsequently an IR subtraction and thermal resummation need to be implemented.

【 授权许可】

Unknown