A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Postinationary vacuum instability and Higgs-inflaton couplings (2016)

Enqvist, K., Karciauskas, M., Lebedev, O., Rusak, S., & Zatta, M. (2016). Postinationary vacuum instability and Higgs-inflaton couplings. Journal of Cosmology and Astroparticle Physics, 11, Article 025. https://doi.org/10.1088/1475-7516/2016/11/025

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Enqvist, Kari; Karciauskas, Mindaugas; Lebedev, Oleg; Rusak, Stanislav; Zatta, Marco

Lehti tai sarja: Journal of Cosmology and Astroparticle Physics

ISSN: 1475-7516

eISSN: 1475-7516

Julkaisuvuosi: 2016

Volyymi: 11

Lehden numero: 0

Artikkelinumero: 025

Kustantaja: Institute of Physics Publishing Ltd.; Scuola Internazionale Superiore di Studi Avanzati (SISSA)

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1088/1475-7516/2016/11/025

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/52294

Tiivistelmä

The Higgs-inflaton coupling plays an important role in the Higgs field dynamics in the early Universe. Even a tiny coupling generated at loop level can have a dramatic effect on the fate of the electroweak vacuum. Such Higgs-inflaton interaction is present both at the trilinear and quartic levels in realistic reheating models. In this work, we examine the Higgs dynamics during the preheating epoch, focusing on the effects of the parametric and tachyonic resonances. We use lattice simulations and other numerical tools in our studies. We find that the resonances can induce large fluctuations of the Higgs field which destabilize the electroweak vacuum. Our considerations thus provide an upper bound on quartic and trilinear interactions between the Higgs and the inflaton. We conclude that there exists a favorable range of the couplings within which the Higgs field is stabilized during both inflation and preheating epochs.

Vapaat asiasanat: Higgs-inflation couplings

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

Raportointivuosi: 2016

JUFO-taso: 1