The effect of non-minimally coupled scalar field on gravitational waves from first-order vacuum phase transitions

A. Savaş Arapoğlu, A. Emrah Yükselci*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We investigate first-order vacuum phase transitions in the presence of a non-minimally coupled scalar field starting with the coupling effect on the initial dynamics of phase transitions by defining an effective potential for the scalar field and then performing three dimensional numerical simulations to observe any possible distinction in gravitational wave power spectrum. Although we give a description of the model with the expanding background, in this particular paper, we exclude the scale factor contribution since we primarily focus on the immediate impact of the non-minimal coupling at initial phases of the transition. Even in this case we found that this modification has discernible effect on the power spectrum of the gravitational wave energy density.

Original languageEnglish
Article number101176
JournalPhysics of the Dark Universe
Volume40
DOIs
Publication statusPublished - May 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Funding

This work is supported by the The Scientific and Technological Research Council of Türkiye (TÜBİTAK) through grant number 121F066 . Computing resources used in this work were provided by the National Center for High Performance Computing of Türkiye (UHeM) under grant number 5013072022 . The code used for the numerical calculations reported in this paper were tested through the simulations performed at TUBITAK ULAKBIM, High Performance and Grid Computing Center (TRUBA resources).

FundersFunder number
National Center for High Performance Computing of Türkiye
Ulusal Yüksek Başarımlı Hesaplama Merkezi, Istanbul Teknik Üniversitesi5013072022
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu121F066

    Keywords

    • Cosmological simulations
    • Early Universe
    • Gravitational Waves
    • Phase transitions

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