Solutions to axion electrodynamics in various geometries
Recently there has been a surge of new experimental proposals to search for ultralight axion dark matter with axion mass, m_{a}≲1 μeV. Many of these proposals search for small oscillating magnetic fields induced in or around a large static magnetic field. Lately, there has been interest in alternat...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2019
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| Online Access: | http://hdl.handle.net/1721.1/121020 |
| _version_ | 1826218032749346816 |
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| author | Bogorad, Zachary Ouellet, Jonathan L Bogorad, Zachary A. |
| author2 | Massachusetts Institute of Technology. Department of Mathematics |
| author_facet | Massachusetts Institute of Technology. Department of Mathematics Bogorad, Zachary Ouellet, Jonathan L Bogorad, Zachary A. |
| author_sort | Bogorad, Zachary |
| collection | MIT |
| description | Recently there has been a surge of new experimental proposals to search for ultralight axion dark matter with axion mass, m_{a}≲1 μeV. Many of these proposals search for small oscillating magnetic fields induced in or around a large static magnetic field. Lately, there has been interest in alternate detection schemes which search for oscillating electric fields in a similar setup. In this paper, we explicitly solve Maxwell’s equations in a simplified geometry and demonstrate that in this mass range, the axion-induced electric fields are heavily suppressed by boundary conditions. Unfortunately, experimentally measuring axion-induced electric fields is not feasible in this mass regime using the currently proposed setups with static primary fields. We show that at larger axion masses, induced electric fields are not suppressed, but boundary effects may still be relevant for an experiment’s sensitivity. We then make a general argument about a generic detector configuration with a static magnetic field to show that the electric fields are always suppressed in the limit of large wavelength. |
| first_indexed | 2024-09-23T17:13:05Z |
| format | Article |
| id | mit-1721.1/121020 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T17:13:05Z |
| publishDate | 2019 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1210202022-10-03T11:12:13Z Solutions to axion electrodynamics in various geometries Bogorad, Zachary Ouellet, Jonathan L Bogorad, Zachary A. Massachusetts Institute of Technology. Department of Mathematics Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Ouellet, Jonathan L Bogorad, Zachary A. Recently there has been a surge of new experimental proposals to search for ultralight axion dark matter with axion mass, m_{a}≲1 μeV. Many of these proposals search for small oscillating magnetic fields induced in or around a large static magnetic field. Lately, there has been interest in alternate detection schemes which search for oscillating electric fields in a similar setup. In this paper, we explicitly solve Maxwell’s equations in a simplified geometry and demonstrate that in this mass range, the axion-induced electric fields are heavily suppressed by boundary conditions. Unfortunately, experimentally measuring axion-induced electric fields is not feasible in this mass regime using the currently proposed setups with static primary fields. We show that at larger axion masses, induced electric fields are not suppressed, but boundary effects may still be relevant for an experiment’s sensitivity. We then make a general argument about a generic detector configuration with a static magnetic field to show that the electric fields are always suppressed in the limit of large wavelength. National Science Foundation (U.S.) (Award No. 1806440) 2019-03-18T17:02:25Z 2019-03-18T17:02:25Z 2019-03 2018-09 2019-03-12T18:00:11Z Article http://purl.org/eprint/type/JournalArticle 2470-0010 2470-0029 http://hdl.handle.net/1721.1/121020 Ouellet, Jonathan and Zachary Bogorad. "Solutions to axion electrodynamics in various geometries." Physical Review D, 99, 055010 (2019) en http://dx.doi.org/10.1103/PhysRevD.99.055010 Physical Review D Creative Commons Attribution http://creativecommons.org/licenses/by/3.0 application/pdf American Physical Society American Physical Society |
| spellingShingle | Bogorad, Zachary Ouellet, Jonathan L Bogorad, Zachary A. Solutions to axion electrodynamics in various geometries |
| title | Solutions to axion electrodynamics in various geometries |
| title_full | Solutions to axion electrodynamics in various geometries |
| title_fullStr | Solutions to axion electrodynamics in various geometries |
| title_full_unstemmed | Solutions to axion electrodynamics in various geometries |
| title_short | Solutions to axion electrodynamics in various geometries |
| title_sort | solutions to axion electrodynamics in various geometries |
| url | http://hdl.handle.net/1721.1/121020 |
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