Physical Signatures of Fermion-Coupled Axion Dark Matter
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914829793492992 |
|---|---|
| author | Berlin, Asher Millar, Alexander J. Trickle, Tanner Zhou, Kevin |
| author_facet | Berlin, Asher Millar, Alexander J. Trickle, Tanner Zhou, Kevin |
| contents | In the presence of axion dark matter, fermion spins experience an "axion wind" torque and an "axioelectric" force. We investigate new experimental probes of these effects and find that magnetized analogs of multilayer dielectric haloscopes can explore orders of magnitude of new parameter space for the axion-electron coupling. We also revisit the calculation of axion absorption into in-medium excitations, showing that axioelectric absorption is screened in spin-polarized targets, and axion wind absorption can be characterized in terms of a magnetic energy loss function. Finally, our detailed theoretical treatment allows us to critically examine recent claims in the literature. We find that axioelectric corrections to electronic energy levels are smaller than previously estimated and that the purported electron electric dipole moment due to a constant axion field is entirely spurious. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_11601 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Physical Signatures of Fermion-Coupled Axion Dark Matter Berlin, Asher Millar, Alexander J. Trickle, Tanner Zhou, Kevin High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Materials Science High Energy Physics - Experiment In the presence of axion dark matter, fermion spins experience an "axion wind" torque and an "axioelectric" force. We investigate new experimental probes of these effects and find that magnetized analogs of multilayer dielectric haloscopes can explore orders of magnitude of new parameter space for the axion-electron coupling. We also revisit the calculation of axion absorption into in-medium excitations, showing that axioelectric absorption is screened in spin-polarized targets, and axion wind absorption can be characterized in terms of a magnetic energy loss function. Finally, our detailed theoretical treatment allows us to critically examine recent claims in the literature. We find that axioelectric corrections to electronic energy levels are smaller than previously estimated and that the purported electron electric dipole moment due to a constant axion field is entirely spurious. |
| title | Physical Signatures of Fermion-Coupled Axion Dark Matter |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Materials Science High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2312.11601 |