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On electroweak metastability and Higgs inflation

by Isabella Masina, Mariano Quiros

Submission summary

Authors (as registered SciPost users): Isabella Masina
Submission information
Preprint Link: https://arxiv.org/abs/2412.03284v2  (pdf)
Date submitted: 2024-12-19 08:02
Submitted by: Masina, Isabella
Submitted to: SciPost Physics Proceedings
Proceedings issue: The 17th International Workshop on Top Quark Physics (TOP2024)
Ontological classification
Academic field: Physics
Specialties:
  • Gravitation, Cosmology and Astroparticle Physics
  • High-Energy Physics - Theory
  • High-Energy Physics - Phenomenology
Approach: Theoretical

Abstract

For the central values of the relevant experimental inputs, that is the strong coupling constant and the top quark and Higgs masses, the effective Higgs potential displays two minima, one at the electroweak scale and a deeper one at high energies. We review the phenomenology of the Higgs inflation model, extending the Standard Model to include a non-minimal coupling to gravity; as recently shown [1], even configurations that would be metastable in the Standard Model, become viable for inflation if the non-minimal coupling is large enough to flatten the Higgs potential at field values below the barrier between the minima.

Author comments upon resubmission

We resubmit the manuscript with minor corrections, as listed below.

List of changes

1) Added referece to [1] in the abstract.
2) Added 3 references: [5], [10] and [11].
3) The size of some plots has been increased.
4) Some equations written in the text have been put in evidence for an easier reading.

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