Axionic Dark Matter in a Bi-Metric Universe
We study the evolution and production of axion dark matter in a universe model with two scale factors corresponding to different patches of the universe. The interaction between patches is described through a deformed Poisson bracket structure. The first part of the present paper is devoted to a rev...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/9/10/429 |
| _version_ | 1797572117121728512 |
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| author | Carlos Maldonado Fernando Méndez |
| author_facet | Carlos Maldonado Fernando Méndez |
| author_sort | Carlos Maldonado |
| collection | DOAJ |
| description | We study the evolution and production of axion dark matter in a universe model with two scale factors corresponding to different patches of the universe. The interaction between patches is described through a deformed Poisson bracket structure. The first part of the present paper is devoted to a review of the results reported in previous works concerning the study of dark matter as WIMPs and FIMPs. The new results concerning axionic dark matter in this bi-metric scenario show that different values of the deformation parameter <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>κ</mi></semantics></math></inline-formula> allow values of masses and misalignment angles forbidden in standard cosmology. The present model can also be considered a different type of nonstandard cosmology consistent with previously reported results. |
| first_indexed | 2024-03-10T20:50:35Z |
| format | Article |
| id | doaj.art-76722a5b4df74e828beab44430e0eb95 |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-10T20:50:35Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-76722a5b4df74e828beab44430e0eb952023-11-19T18:23:18ZengMDPI AGUniverse2218-19972023-09-0191042910.3390/universe9100429Axionic Dark Matter in a Bi-Metric UniverseCarlos Maldonado0Fernando Méndez1Departamento de Física, Facultad de Ciencia, Universidad de Santiago de Chile (USACH), Santiago 9170124, ChileDepartamento de Física, Facultad de Ciencia, Universidad de Santiago de Chile (USACH), Santiago 9170124, ChileWe study the evolution and production of axion dark matter in a universe model with two scale factors corresponding to different patches of the universe. The interaction between patches is described through a deformed Poisson bracket structure. The first part of the present paper is devoted to a review of the results reported in previous works concerning the study of dark matter as WIMPs and FIMPs. The new results concerning axionic dark matter in this bi-metric scenario show that different values of the deformation parameter <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>κ</mi></semantics></math></inline-formula> allow values of masses and misalignment angles forbidden in standard cosmology. The present model can also be considered a different type of nonstandard cosmology consistent with previously reported results.https://www.mdpi.com/2218-1997/9/10/429non-standard cosmologydark matterquantum gravity phenomenology |
| spellingShingle | Carlos Maldonado Fernando Méndez Axionic Dark Matter in a Bi-Metric Universe Universe non-standard cosmology dark matter quantum gravity phenomenology |
| title | Axionic Dark Matter in a Bi-Metric Universe |
| title_full | Axionic Dark Matter in a Bi-Metric Universe |
| title_fullStr | Axionic Dark Matter in a Bi-Metric Universe |
| title_full_unstemmed | Axionic Dark Matter in a Bi-Metric Universe |
| title_short | Axionic Dark Matter in a Bi-Metric Universe |
| title_sort | axionic dark matter in a bi metric universe |
| topic | non-standard cosmology dark matter quantum gravity phenomenology |
| url | https://www.mdpi.com/2218-1997/9/10/429 |
| work_keys_str_mv | AT carlosmaldonado axionicdarkmatterinabimetricuniverse AT fernandomendez axionicdarkmatterinabimetricuniverse |