White dwarfs as a probe of exceptionally light QCD axions
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866913359964667904 |
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| author | Balkin, Reuven Serra, Javi Springmann, Konstantin Stelzl, Stefan Weiler, Andreas |
| author_facet | Balkin, Reuven Serra, Javi Springmann, Konstantin Stelzl, Stefan Weiler, Andreas |
| contents | We study the effects of exceptionally light QCD axions on the stellar configuration of white dwarfs. At finite baryon density, the non-derivative coupling of the axion to nucleons displaces the axion from its in-vacuum minimum which implies a reduction of the nucleon mass. This dramatically alters the composition of stellar remnants. In particular, the modifications of the mass-radius relationship of white dwarfs allow us to probe large regions of unexplored parameter space without requiring that axions are dark matter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_02661 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | White dwarfs as a probe of exceptionally light QCD axions Balkin, Reuven Serra, Javi Springmann, Konstantin Stelzl, Stefan Weiler, Andreas High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Solar and Stellar Astrophysics We study the effects of exceptionally light QCD axions on the stellar configuration of white dwarfs. At finite baryon density, the non-derivative coupling of the axion to nucleons displaces the axion from its in-vacuum minimum which implies a reduction of the nucleon mass. This dramatically alters the composition of stellar remnants. In particular, the modifications of the mass-radius relationship of white dwarfs allow us to probe large regions of unexplored parameter space without requiring that axions are dark matter. |
| title | White dwarfs as a probe of exceptionally light QCD axions |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2211.02661 |