Variations on the vev flip-flop: instantaneous freeze-out and decaying dark matter
Abstract In this work we consider a simple model for dark matter and identify regions of parameter space where the relic abundance is set via kinematic thresholds, which open and close due to thermal effects. We discuss instantaneous freeze-out, where dark matter suddenly freezes-out when the channe...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-05-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP05(2019)070 |
| _version_ | 1818481015250747392 |
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| author | Michael J. Baker Lukas Mittnacht |
| author_facet | Michael J. Baker Lukas Mittnacht |
| author_sort | Michael J. Baker |
| collection | DOAJ |
| description | Abstract In this work we consider a simple model for dark matter and identify regions of parameter space where the relic abundance is set via kinematic thresholds, which open and close due to thermal effects. We discuss instantaneous freeze-out, where dark matter suddenly freezes-out when the channel connecting dark matter to the thermal bath closes, and decaying dark matter, where dark matter freezes-out while relativistic and later decays when a kinematic threshold temporarily opens. These mechanisms can occur in the vicinity of a one-step or a two-step phase transition. In all cases thermal effects provide this dynamic behaviour, while ensuring that dark matter remains stable until the present day. |
| first_indexed | 2024-12-10T11:29:52Z |
| format | Article |
| id | doaj.art-775e61f4c25b48b4819135f117bdb42d |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-10T11:29:52Z |
| publishDate | 2019-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-775e61f4c25b48b4819135f117bdb42d2022-12-22T01:50:37ZengSpringerOpenJournal of High Energy Physics1029-84792019-05-012019512910.1007/JHEP05(2019)070Variations on the vev flip-flop: instantaneous freeze-out and decaying dark matterMichael J. Baker0Lukas Mittnacht1Physik-Institut, Universität ZürichPRISMA Cluster of Excellence & Mainz Institute for Theoretical Physics, Johannes Gutenberg UniversityAbstract In this work we consider a simple model for dark matter and identify regions of parameter space where the relic abundance is set via kinematic thresholds, which open and close due to thermal effects. We discuss instantaneous freeze-out, where dark matter suddenly freezes-out when the channel connecting dark matter to the thermal bath closes, and decaying dark matter, where dark matter freezes-out while relativistic and later decays when a kinematic threshold temporarily opens. These mechanisms can occur in the vicinity of a one-step or a two-step phase transition. In all cases thermal effects provide this dynamic behaviour, while ensuring that dark matter remains stable until the present day.http://link.springer.com/article/10.1007/JHEP05(2019)070Beyond Standard ModelThermal Field TheoryCosmology of Theories beyond the SM |
| spellingShingle | Michael J. Baker Lukas Mittnacht Variations on the vev flip-flop: instantaneous freeze-out and decaying dark matter Journal of High Energy Physics Beyond Standard Model Thermal Field Theory Cosmology of Theories beyond the SM |
| title | Variations on the vev flip-flop: instantaneous freeze-out and decaying dark matter |
| title_full | Variations on the vev flip-flop: instantaneous freeze-out and decaying dark matter |
| title_fullStr | Variations on the vev flip-flop: instantaneous freeze-out and decaying dark matter |
| title_full_unstemmed | Variations on the vev flip-flop: instantaneous freeze-out and decaying dark matter |
| title_short | Variations on the vev flip-flop: instantaneous freeze-out and decaying dark matter |
| title_sort | variations on the vev flip flop instantaneous freeze out and decaying dark matter |
| topic | Beyond Standard Model Thermal Field Theory Cosmology of Theories beyond the SM |
| url | http://link.springer.com/article/10.1007/JHEP05(2019)070 |
| work_keys_str_mv | AT michaeljbaker variationsonthevevflipflopinstantaneousfreezeoutanddecayingdarkmatter AT lukasmittnacht variationsonthevevflipflopinstantaneousfreezeoutanddecayingdarkmatter |