Coupled scalar-Proca soliton stars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00579755" target="_blank" >RIV/68378271:_____/23:00579755 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevD.108.044044" target="_blank" >https://doi.org/10.1103/PhysRevD.108.044044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.108.044044" target="_blank" >10.1103/PhysRevD.108.044044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coupled scalar-Proca soliton stars

Popis výsledku v původním jazyce

We construct and explore the physical properties of textit{scalaroca stars}: spherically symmetric solitonic solutions made of a complex scalar field and a complex Proca field . We restrict our attention to configurations in which both fields are in the fundamental state and possess an equal mass, focusing on the cases when () the scalar and Proca fields are (non--linearly) super--imposed and do not interact with each other, and () the scalar and Proca fields interact through the term . The solutions are found numerically for the non--interacting case () as well as for both signs of the interaction coupling constant . While pure ( single--field) Proca/scalar boson stars are the most/least massive for weakly--interacting fields, one can obtain more massive solutions for a sufficiently strong interaction. Besides, in the latter case, solutions can be either in a synchronized state -- in which both fields have the same frequency -- or in a non--synchronized state. In addition, we observe that the coupling between the two fields allows solitonic solutions with a real scalar field. We further comment on the possibility of spontaneous scalarization and vectorization of the interacting solitonic solution.

Název v anglickém jazyce

Coupled scalar-Proca soliton stars

Popis výsledku anglicky

We construct and explore the physical properties of textit{scalaroca stars}: spherically symmetric solitonic solutions made of a complex scalar field and a complex Proca field . We restrict our attention to configurations in which both fields are in the fundamental state and possess an equal mass, focusing on the cases when () the scalar and Proca fields are (non--linearly) super--imposed and do not interact with each other, and () the scalar and Proca fields interact through the term . The solutions are found numerically for the non--interacting case () as well as for both signs of the interaction coupling constant . While pure ( single--field) Proca/scalar boson stars are the most/least massive for weakly--interacting fields, one can obtain more massive solutions for a sufficiently strong interaction. Besides, in the latter case, solutions can be either in a synchronized state -- in which both fields have the same frequency -- or in a non--synchronized state. In addition, we observe that the coupling between the two fields allows solitonic solutions with a real scalar field. We further comment on the possibility of spontaneous scalarization and vectorization of the interacting solitonic solution.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/GM21-16583M" target="_blank" >GM21-16583M: Nové cesty při hledání temné energie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

108

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

044044

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85172777891