ETHOS—an effective theory of structure formation: From dark particle physics to the matter distribution of the Universe
We formulate an effective theory of structure formation (ETHOS) that enables cosmological structure formation to be computed in almost any microphysical model of dark matter physics. This framework maps the detailed microphysical theories of particle dark matter interactions into the physical effect...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/107699 https://orcid.org/0000-0001-8593-7692 |
| _version_ | 1826212002785132544 |
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| author | Cyr-Racine, Francis-Yan Sigurdson, Kris Zavala, Jesús Bringmann, Torsten Vogelsberger, Mark Pfrommer, Christoph |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Cyr-Racine, Francis-Yan Sigurdson, Kris Zavala, Jesús Bringmann, Torsten Vogelsberger, Mark Pfrommer, Christoph |
| author_sort | Cyr-Racine, Francis-Yan |
| collection | MIT |
| description | We formulate an effective theory of structure formation (ETHOS) that enables cosmological structure formation to be computed in almost any microphysical model of dark matter physics. This framework maps the detailed microphysical theories of particle dark matter interactions into the physical effective parameters that shape the linear matter power spectrum and the self-interaction transfer cross section of nonrelativistic dark matter. These are the input to structure formation simulations, which follow the evolution of the cosmological and galactic dark matter distributions. Models with similar effective parameters in ETHOS but with different dark particle physics would nevertheless result in similar dark matter distributions. We present a general method to map an ultraviolet complete or effective field theory of low-energy dark matter physics into parameters that affect the linear matter power spectrum and carry out this mapping for several representative particle models. We further propose a simple but useful choice for characterizing the dark matter self-interaction transfer cross section that parametrizes self-scattering in structure formation simulations. Taken together, these effective parameters in ETHOS allow the classification of dark matter theories according to their structure formation properties rather than their intrinsic particle properties, paving the way for future simulations to span the space of viable dark matter physics relevant for structure formation. |
| first_indexed | 2024-09-23T15:14:29Z |
| format | Article |
| id | mit-1721.1/107699 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:14:29Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1076992022-09-29T13:37:14Z ETHOS—an effective theory of structure formation: From dark particle physics to the matter distribution of the Universe Cyr-Racine, Francis-Yan Sigurdson, Kris Zavala, Jesús Bringmann, Torsten Vogelsberger, Mark Pfrommer, Christoph Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research Vogelsberger, Mark We formulate an effective theory of structure formation (ETHOS) that enables cosmological structure formation to be computed in almost any microphysical model of dark matter physics. This framework maps the detailed microphysical theories of particle dark matter interactions into the physical effective parameters that shape the linear matter power spectrum and the self-interaction transfer cross section of nonrelativistic dark matter. These are the input to structure formation simulations, which follow the evolution of the cosmological and galactic dark matter distributions. Models with similar effective parameters in ETHOS but with different dark particle physics would nevertheless result in similar dark matter distributions. We present a general method to map an ultraviolet complete or effective field theory of low-energy dark matter physics into parameters that affect the linear matter power spectrum and carry out this mapping for several representative particle models. We further propose a simple but useful choice for characterizing the dark matter self-interaction transfer cross section that parametrizes self-scattering in structure formation simulations. Taken together, these effective parameters in ETHOS allow the classification of dark matter theories according to their structure formation properties rather than their intrinsic particle properties, paving the way for future simulations to span the space of viable dark matter physics relevant for structure formation. MIT Research Support Committee (Reed Fund) 2017-03-24T19:49:53Z 2017-03-24T19:49:53Z 2016-06 2016-02 2016-06-28T22:00:14Z Article http://purl.org/eprint/type/JournalArticle 2470-0010 2470-0029 http://hdl.handle.net/1721.1/107699 Cyr-Racine, Francis-Yan et al. “ETHOS—an Effective Theory of Structure Formation: From Dark Particle Physics to the Matter Distribution of the Universe.” Physical Review D 93.12 (2016): n. pag. CrossRef. Web. 24 Mar. 2017. © 2016 American Physical Society https://orcid.org/0000-0001-8593-7692 en http://dx.doi.org/10.1103/PhysRevD.93.123527 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Cyr-Racine, Francis-Yan Sigurdson, Kris Zavala, Jesús Bringmann, Torsten Vogelsberger, Mark Pfrommer, Christoph ETHOS—an effective theory of structure formation: From dark particle physics to the matter distribution of the Universe |
| title | ETHOS—an effective theory of structure formation: From dark particle physics to the matter distribution of the Universe |
| title_full | ETHOS—an effective theory of structure formation: From dark particle physics to the matter distribution of the Universe |
| title_fullStr | ETHOS—an effective theory of structure formation: From dark particle physics to the matter distribution of the Universe |
| title_full_unstemmed | ETHOS—an effective theory of structure formation: From dark particle physics to the matter distribution of the Universe |
| title_short | ETHOS—an effective theory of structure formation: From dark particle physics to the matter distribution of the Universe |
| title_sort | ethos an effective theory of structure formation from dark particle physics to the matter distribution of the universe |
| url | http://hdl.handle.net/1721.1/107699 https://orcid.org/0000-0001-8593-7692 |
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