Vector fuzzy dark matter, fifth forces, and binary pulsars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00502178" target="_blank" >RIV/68378271:_____/18:00502178 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1475-7516/2018/10/044" target="_blank" >http://dx.doi.org/10.1088/1475-7516/2018/10/044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1475-7516/2018/10/044" target="_blank" >10.1088/1475-7516/2018/10/044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Vector fuzzy dark matter, fifth forces, and binary pulsars

Popis výsledku v původním jazyce

We study the secular effects that an oscillating background ultralight (fuzzy) cosmological vector field has on the dynamics of binary systems such effects appear when the field and the binary are in resonance. We first consider the gravitational interaction between the field and the systems, and quantify the main differences with an oscillating background scalar field. If the energy density of such a field is sufficiently large, as required if it is supposed to be all of the dark matter, we show that the secular effects could yield potentially observable signatures in high precision time of arrival measurements of binary pulsars. We then analyse the secular effects that arise when the field is directly coupled to the bodies in the binary. We show that this study is particularly relevant for models where fuzzy dark matter mediates a baryonic force B (or B–L, with L the lepton number), due to the stellar amount of nucleons present in the stars.

Název v anglickém jazyce

Vector fuzzy dark matter, fifth forces, and binary pulsars

Popis výsledku anglicky

We study the secular effects that an oscillating background ultralight (fuzzy) cosmological vector field has on the dynamics of binary systems such effects appear when the field and the binary are in resonance. We first consider the gravitational interaction between the field and the systems, and quantify the main differences with an oscillating background scalar field. If the energy density of such a field is sufficiently large, as required if it is supposed to be all of the dark matter, we show that the secular effects could yield potentially observable signatures in high precision time of arrival measurements of binary pulsars. We then analyse the secular effects that arise when the field is directly coupled to the bodies in the binary. We show that this study is particularly relevant for models where fuzzy dark matter mediates a baryonic force B (or B–L, with L the lepton number), due to the stellar amount of nucleons present in the stars.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/EF15_003%2F0000437" target="_blank" >EF15_003/0000437: Kosmologie, gravitace a temný sektor vesmíru</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Cosmology and Astroparticle Physics

ISSN

1475-7516

e-ISSN

—

Svazek periodika

2018

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

1-19

Kód UT WoS článku

000448150500001

EID výsledku v databázi Scopus

2-s2.0-85056142684