English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

A dark scalar mediator can easily realize the self-interacting dark matterscenario and satisfy the constraint of the relic density of the dark matter.When the hidden sector is highly decoupled from the visible sector, thegravitational waves produced by the first order phase transition resulted fromthis dark scalar mediator will be an important signature to probe the darksector physics. The simplest dark sector with one scalar and one Dirac fermionis studied in this work. A generic quartic finite-temperature potential is usedto induce the strong first order phase transition. A joint analysis of theself-interacting dark matter, the relic density of the dark matter and thefirst order phase transition shows that the mass range of the dark scalar isabout $(4\times 10^{-4} \sim 3)~\rm GeV$. For the dark matter, when thetemperature ratio $\xi$ between the hidden sector and the visible sector islarger than 0.1, its mass range is about $(10~ \rm MeV\sim 10~ \rm GeV)$. Theproduced gravitational waves have a peak frequency of $(10^{-6}\sim 10^{-3})~\rm Hz$ for a temperature ratio $0.1<\xi<1$, which may be detectable in futuremeasurements.

A hidden self-interacting dark matter sector with first order cosmological phase transition and gravitational wave