Dark D-brane cosmology

Koivisto, Tomi; Wills, Danielle; Zavala, Ivonne; Carrasco, Ivonne Zavala

doi:10.1088/1475-7516/2014/06/036

Journal article 1116 views 139 downloads

Dark D-brane cosmology

Tomi Koivisto, Danielle Wills, Ivonne Zavala, Ivonne Zavala Carrasco

Journal of Cosmology and Astroparticle Physics, Volume: 2014, Issue: 06, Pages: 036 - 036

Swansea University Author: Ivonne Zavala Carrasco

PDF | Version of Record

Article funded by SCOAP 3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License
Download (2.72MB)

Check full text

DOI (Published version): 10.1088/1475-7516/2014/06/036

Abstract

Disformally coupled cosmologies arise from Dirac-Born-Infeld actions in Type II string theories, when matter resides on a moving hidden sector D-brane. Since such matter interacts only very weakly with the standard model particles, this scenario can provide a natural origin for the dark sector of th...

Full description

Published in:	Journal of Cosmology and Astroparticle Physics
ISSN:	1475-7516
Published:	2014
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa21633
Tags:	Add Tag No Tags, Be the first to tag this record!

first_indexed	2015-05-21T16:38:41Z
last_indexed	2019-08-09T15:03:47Z
id	cronfa21633
recordtype	SURis
fullrecord	<?xml version="1.0"?><rfc1807><datestamp>2019-08-08T10:49:12.6744785</datestamp><bib-version>v2</bib-version><id>21633</id><entry>2015-05-21</entry><title>Dark D-brane cosmology</title><swanseaauthors><author><sid>2fb8d4bb665e9a89d3b3478c17f646f8</sid><ORCID>0000-0002-5589-9928</ORCID><firstname>Ivonne</firstname><surname>Zavala Carrasco</surname><name>Ivonne Zavala Carrasco</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2015-05-21</date><deptcode>SPH</deptcode><abstract>Disformally coupled cosmologies arise from Dirac-Born-Infeld actions in Type II string theories, when matter resides on a moving hidden sector D-brane. Since such matter interacts only very weakly with the standard model particles, this scenario can provide a natural origin for the dark sector of the universe with a clear geometrical interpretation: dark energy is identified with the scalar field associated to the D-brane's position as it moves in the internal space, acting as quintessence, while dark matter is identified with the matter living on the D-brane, which can be modelled by a perfect fluid. The coupling functions are determined by the (warped) extra-dimensional geometry, and are thus constrained by the theory. The resulting cosmologies are studied using both dynamical system analysis and numerics. From the dynamical system point of view, one free parameter controls the cosmological dynamics, given by the ratio of the warp factor and the potential energy scales. The disformal coupling allows for new scaling solutions that can describe accelerating cosmologies alleviating the coincidence problem of dark energy. In addition, this scenario may ameliorate the fine-tuning problem of dark energy, whose small value may be attained dynamically, without requiring the mass of the dark energy field to be unnaturally low.</abstract><type>Journal Article</type><journal>Journal of Cosmology and Astroparticle Physics</journal><volume>2014</volume><journalNumber>06</journalNumber><paginationStart>036</paginationStart><paginationEnd>036</paginationEnd><publisher/><issnElectronic>1475-7516</issnElectronic><keywords/><publishedDay>16</publishedDay><publishedMonth>6</publishedMonth><publishedYear>2014</publishedYear><publishedDate>2014-06-16</publishedDate><doi>10.1088/1475-7516/2014/06/036</doi><url/><notes/><college>COLLEGE NANME</college><department>Physics</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>SPH</DepartmentCode><institution>Swansea University</institution><degreesponsorsfunders>SCOAP3</degreesponsorsfunders><apcterm/><lastEdited>2019-08-08T10:49:12.6744785</lastEdited><Created>2015-05-21T16:45:13.3455240</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Biosciences, Geography and Physics - Physics</level></path><authors><author><firstname>Tomi</firstname><surname>Koivisto</surname><order>1</order></author><author><firstname>Danielle</firstname><surname>Wills</surname><order>2</order></author><author><firstname>Ivonne</firstname><surname>Zavala</surname><order>3</order></author><author><firstname>Ivonne</firstname><surname>Zavala Carrasco</surname><orcid>0000-0002-5589-9928</orcid><order>4</order></author></authors><documents><document><filename>0021633-65201660441PM.pdf</filename><originalFilename>KWZ.pdf</originalFilename><uploaded>2016-06-05T18:04:41.1200000</uploaded><type>Output</type><contentLength>2826447</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><embargoDate>2016-05-06T00:00:00.0000000</embargoDate><documentNotes>Article funded by SCOAP 3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License</documentNotes><copyrightCorrect>true</copyrightCorrect></document></documents><OutputDurs/></rfc1807>
spelling	2019-08-08T10:49:12.6744785 v2 21633 2015-05-21 Dark D-brane cosmology 2fb8d4bb665e9a89d3b3478c17f646f8 0000-0002-5589-9928 Ivonne Zavala Carrasco Ivonne Zavala Carrasco true false 2015-05-21 SPH Disformally coupled cosmologies arise from Dirac-Born-Infeld actions in Type II string theories, when matter resides on a moving hidden sector D-brane. Since such matter interacts only very weakly with the standard model particles, this scenario can provide a natural origin for the dark sector of the universe with a clear geometrical interpretation: dark energy is identified with the scalar field associated to the D-brane's position as it moves in the internal space, acting as quintessence, while dark matter is identified with the matter living on the D-brane, which can be modelled by a perfect fluid. The coupling functions are determined by the (warped) extra-dimensional geometry, and are thus constrained by the theory. The resulting cosmologies are studied using both dynamical system analysis and numerics. From the dynamical system point of view, one free parameter controls the cosmological dynamics, given by the ratio of the warp factor and the potential energy scales. The disformal coupling allows for new scaling solutions that can describe accelerating cosmologies alleviating the coincidence problem of dark energy. In addition, this scenario may ameliorate the fine-tuning problem of dark energy, whose small value may be attained dynamically, without requiring the mass of the dark energy field to be unnaturally low. Journal Article Journal of Cosmology and Astroparticle Physics 2014 06 036 036 1475-7516 16 6 2014 2014-06-16 10.1088/1475-7516/2014/06/036 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University SCOAP3 2019-08-08T10:49:12.6744785 2015-05-21T16:45:13.3455240 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Tomi Koivisto 1 Danielle Wills 2 Ivonne Zavala 3 Ivonne Zavala Carrasco 0000-0002-5589-9928 4 0021633-65201660441PM.pdf KWZ.pdf 2016-06-05T18:04:41.1200000 Output 2826447 application/pdf Version of Record true 2016-05-06T00:00:00.0000000 Article funded by SCOAP 3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License true
title	Dark D-brane cosmology
spellingShingle	Dark D-brane cosmology Ivonne Zavala Carrasco
title_short	Dark D-brane cosmology
title_full	Dark D-brane cosmology
title_fullStr	Dark D-brane cosmology
title_full_unstemmed	Dark D-brane cosmology
title_sort	Dark D-brane cosmology
author_id_str_mv	2fb8d4bb665e9a89d3b3478c17f646f8
author_id_fullname_str_mv	2fb8d4bb665e9a89d3b3478c17f646f8_***_Ivonne Zavala Carrasco
author	Ivonne Zavala Carrasco
author2	Tomi Koivisto Danielle Wills Ivonne Zavala Ivonne Zavala Carrasco
format	Journal article
container_title	Journal of Cosmology and Astroparticle Physics
container_volume	2014
container_issue	06
container_start_page	036
publishDate	2014
institution	Swansea University
issn	1475-7516
doi_str_mv	10.1088/1475-7516/2014/06/036
college_str	Faculty of Science and Engineering
hierarchytype
hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str	1
active_str	0
description	Disformally coupled cosmologies arise from Dirac-Born-Infeld actions in Type II string theories, when matter resides on a moving hidden sector D-brane. Since such matter interacts only very weakly with the standard model particles, this scenario can provide a natural origin for the dark sector of the universe with a clear geometrical interpretation: dark energy is identified with the scalar field associated to the D-brane's position as it moves in the internal space, acting as quintessence, while dark matter is identified with the matter living on the D-brane, which can be modelled by a perfect fluid. The coupling functions are determined by the (warped) extra-dimensional geometry, and are thus constrained by the theory. The resulting cosmologies are studied using both dynamical system analysis and numerics. From the dynamical system point of view, one free parameter controls the cosmological dynamics, given by the ratio of the warp factor and the potential energy scales. The disformal coupling allows for new scaling solutions that can describe accelerating cosmologies alleviating the coincidence problem of dark energy. In addition, this scenario may ameliorate the fine-tuning problem of dark energy, whose small value may be attained dynamically, without requiring the mass of the dark energy field to be unnaturally low.
published_date	2014-06-16T03:25:41Z
_version_	1763750907778957312
score	11.013148

Dark D-brane cosmology

Similar Items