2021
DOI: 10.48550/arxiv.2109.13941
|View full text |Cite
Preprint
|
Sign up to set email alerts
|

Annihilogenesis

Jason Arakawa,
Arvind Rajaraman,
Tim M. P. Tait

Abstract: We investigate a novel interplay between the decay and annihilation of a particle whose mass undergoes a large shift during a first order phase transition, leading to the particles becoming trapped in the false vacuum and enhancing their annihilation rates as the bubbles of true vacuum expand. This opens up a large region of the parameter space where annihilations can be important. We apply this scenario to baryogenesis, where we find that annihilations can be enhanced enough to generate the requires baryon as… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

0
5
0

Year Published

2021
2021
2022
2022

Publication Types

Select...
2
1

Relationship

0
3

Authors

Journals

citations
Cited by 3 publications
(5 citation statements)
references
References 25 publications
0
5
0
Order By: Relevance
“…The mass of a PBH at its formation depends on its t c . However, since P f (t c ) rapidly drops as t c increases, the PBH mass is mostly distributed around the threshold obtained from ( 9) and (10), M PBH ∼ 4π 3 H −3 ∆V , so we predict an approximately monochromatic PBH mass spectrum. Results: For a quick estimation, we parameterize Γ n (t) as [15,103] Γ n (t) = H 4 e βH(t−tn) (15) where β and t n are free parameters.…”
Section: Collision Of Two Bubbles and The Hoop Criterionmentioning
confidence: 55%
See 1 more Smart Citation
“…The mass of a PBH at its formation depends on its t c . However, since P f (t c ) rapidly drops as t c increases, the PBH mass is mostly distributed around the threshold obtained from ( 9) and (10), M PBH ∼ 4π 3 H −3 ∆V , so we predict an approximately monochromatic PBH mass spectrum. Results: For a quick estimation, we parameterize Γ n (t) as [15,103] Γ n (t) = H 4 e βH(t−tn) (15) where β and t n are free parameters.…”
Section: Collision Of Two Bubbles and The Hoop Criterionmentioning
confidence: 55%
“…A first-order phase transition necessarily leads to nucleation of true vacuum bubbles and their subsequent expansions, and they must eventually collide to fill the universe with the true vacuum. This can result in many cosmological implications such as dark matter [1][2][3][4][5] and baryogenesis [6][7][8][9][10]. Since gravitational wave production from bubble collisions during a first-order phase transition is generically expected [11][12][13][14][15][16][17][18], those ideas may be testable by near-future gravitational wave experiments (see [17,18] for reviews).…”
mentioning
confidence: 99%
“…[1,2] has been applied to baryogenesis in ref. [18] where reflected particles build up in the false vacuum phase, leading to an enhanced asymmetry due to annihilations (this work does not, however, simultaneously produce dark matter). Baryogenesis due to the production of heavy particles from relativistic bubble walls has been demonstrated in refs.…”
Section: Introductionmentioning
confidence: 94%
“…The case of a first order phase transition is particularly interesting, due to the rich non-linear dynamics of bubble nucleation and percolation. Bubbles can collide producing DM particles, they can act as filters to restrict the transmission of DM particles and limit their relic abundance, or they can modify DM's properties like mass and couplings [141][142][143][144][145][146][147][148][149][150][151]. Each of these scenarios has a rich phenomenology, particularly if the DM couples to the Higgs field during the EWPhT.…”
Section: Freeze-in Dmmentioning
confidence: 99%
“…3. Such scenarios have been used for producing the observed baryon asymmetry of the universe as well [150].…”
Section: Stable Bound Statesmentioning
confidence: 99%