Work

Lee–Wick theories at high temperature

Year: 2009

Type: article

Abstract: An extension of the standard model, the Lee–Wick standard model, based on ideas of Lee and Wick was recently introduced. It does not contain quadratic divergences in the Higgs mass and hence solves the hierarchy puzzle. The Lee–Wick standard model contains new heavy Lee–Wick resonances at the TeV scale that decay to ordinary particles. In this Letter we examine the behavior of Lee–Wick resonances at high temperature. We argue that they contribute negatively to the energy density ρ and pressure p and at temperatures much greater than their mass M their O(T4) contributions to ρ and p cancel against those of the ordinary (light) particles. The remaining O(M2T2) contributions are positive and result in an equation of state that approaches w=1 from below as T→∞.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2009.03.036

Authors: Bartosz Fornal, Benjamín Grinstein, Mark B. Wise

Institutions: California Institute of Technology, University of California San Diego

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

Funder: U.S. Department of Energy