New approach to electroweak symmetry nonrestoration

Marcela Carena, Claudius Krause, Zhen Liu, Yikun Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Electroweak symmetry nonrestoration up to high temperatures well above the electroweak scale offers new alternatives for baryogenesis. We propose a new approach for electroweak symmetry nonrestoration via an inert Higgs sector that couples to the Standard Model Higgs as well as an extended scalar singlet sector. We implement renormalization group improvements and thermal resummation, necessary to evaluate the effective potential spanning over a broad range of energy scales and temperatures. We present examples of benchmark scenarios that allow for electroweak symmetry nonrestoration all the way up to hundreds of TeV temperatures and also feature suppressed sphaleron washout factors down to the electroweak scale. Our method for transmitting the Standard Model broken electroweak symmetry to an inert Higgs sector has several intriguing implications for (electroweak) baryogenesis and early universe thermal histories and can be scrutinized through Higgs physics phenomenology and electroweak precision measurements at the HL-LHC.

Original languageEnglish (US)
Article number055016
JournalPhysical Review D
Issue number5
StatePublished - Sep 13 2021

Bibliographical note

Funding Information:
We thank N. Blinov, C. Hill, A. Long, M. Perelstein, and C. Wagner for helpful discussions at various stages of this project. C. K. acknowledges the support of the Alexander von Humboldt Foundation and the Grant No. DE-SC0010008 from the U.S. Department of Energy. Y. W. acknowledges the support of the Fermilab/University of Chicago Graduate Student Collaborative Research Award. This manuscript has been authored by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. M. C., C. K., and Z. L. would like to thank the Aspen Center for Physics, which is supported by National Science Foundation Grant No. PHY-1607611, where part of the study was performed. Z. L. was supported in part by the National Science Foundation under Grant No. PHY-1914731 at University of Maryland and by the Maryland Center for Fundamental Physics. In this work, we used Mathematica and the numpy , s ci p y , matplotlib , pandas , and cosmotransitions software packages. We wrote the main code in python , which is available at .

Publisher Copyright:
© 2021 authors. Published by the American Physical Society.


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