Ultralight Dark Matter from the Edge of Field Space
Fuente:
arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866914600919760896 |
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| author | Becker, Mathias D'Eramo, Francesco Vaskonen, Ville |
| author_facet | Becker, Mathias D'Eramo, Francesco Vaskonen, Ville |
| contents | We introduce a novel class of bosonic dark matter candidates that we dub wallions, featuring boundaries in field space. The wallion mass is exponentially suppressed when the separation between boundaries far exceeds their intrinsic width and remains radiatively stable under self-interactions. We study the early-universe evolution of wallions and the associated cosmological signatures. Finally, we show that instanton effects can dynamically generate field-space boundaries and discuss possible experimental probes once the wallion couples to Standard Model fields. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_09622 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ultralight Dark Matter from the Edge of Field Space Becker, Mathias D'Eramo, Francesco Vaskonen, Ville High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics We introduce a novel class of bosonic dark matter candidates that we dub wallions, featuring boundaries in field space. The wallion mass is exponentially suppressed when the separation between boundaries far exceeds their intrinsic width and remains radiatively stable under self-interactions. We study the early-universe evolution of wallions and the associated cosmological signatures. Finally, we show that instanton effects can dynamically generate field-space boundaries and discuss possible experimental probes once the wallion couples to Standard Model fields. |
| title | Ultralight Dark Matter from the Edge of Field Space |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2511.09622 |