Lee-Wick standard model at finite temperature

Richard Lebed, Andrew J. Long, Russell H. Terbeek

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

The Lee-Wick Standard Model at temperatures near the electroweak scale is considered, with the aim of studying the electroweak phase transition. While Lee-Wick theories possess states of negative norm, they are not pathological but instead are treated by imposing particular boundary conditions and using particular integration contours in the calculation of S-matrix elements. It is not immediately clear how to extend this prescription to formulate the theory at finite temperature; we explore two different pictures of finite-temperature Lee-Wick theories, and calculate the thermodynamic variables and the (one-loop) thermal effective potential. We apply these results to study the Lee-Wick Standard Model and find that the electroweak phase transition is a continuous crossover, much like in the Standard Model. However, the high-temperature behavior is modified due to cancellations between thermal corrections arising from the negative- and positive-norm states.

Original languageEnglish (US)
Article number085014
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume88
Issue number8
DOIs
StatePublished - Oct 10 2013

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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