<div class="csl-bib-body">
<div class="csl-entry">Briddon, C., Burrage, C., Moss, A., & Tamosiunas, A. (2025, May 23). <i>Solving for screened scalar fields in arbitrary time evolving systems using SELCIE</i> [Conference Presentation]. Tabletop Scale Cosmology 2025, United Kingdom of Great Britain and Northern Ireland (the). https://doi.org/10.34726/11820</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/226171
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dc.identifier.uri
https://doi.org/10.34726/11820
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dc.description
The public talks from the conference are all in a YouTube playlist:
"https://www.youtube.com/watch?v=_KNFKroBaxc&t=962s"
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dc.description.abstract
A range of modified gravity models can be reframed as General Relativity with an additional scalar degree of freedom that couples conformally to the matter sector. With the right choice of potential these scalar fields can posses screening mechanisms. This allows them to evade historic efforts to detect them while still allowing them to explain observed phenomena such as the accelerated expansion of the universe. The problem we then face is that because these models are nonlinear obtaining analytic solutions (in both static and time evolving systems) becomes difficult, if not impossible, except for the simplest of systems with a high degree of symmetry. Consequently, when designing and performing table top experiments attempting the detect these fields, often a dedicated numerical simulation is required. For this reason, I have developed the software package called SELCIE to streamline this process. This software allows the user to define arbitrarily complicated systems and solves the nonlinear field equations for this system, and with large control over the accuracy and efficiency of the simulation, thanks to the use of the finite element method. Currently the publicly available software is only designed for the chameleon model in a static configuration. This talk will focus on the soon to be published upgrade to SELCIE which will expand its scope to wide range of models, including the symmetron and dilaton, in both static and time evolving systems. This talk is paired with a talk by my collaborator, Andrius Tamosiunas, where he will discuss some interesting physical phenomena that have been obtained using SELCIE for time evolving systems, which could be exploited to detect/constrain these scalar fields.
en
dc.description.sponsorship
FWF - Österr. Wissenschaftsfonds
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dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
Modified Gravity
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dc.subject
Scalar Fields
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dc.subject
Numerics
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dc.title
Solving for screened scalar fields in arbitrary time evolving systems using SELCIE
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dc.type
Presentation
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dc.type
Vortrag
de
dc.rights.license
Urheberrechtsschutz
de
dc.rights.license
In Copyright
en
dc.identifier.doi
10.34726/11820
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dc.relation.grantno
PAT7599423
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dc.type.category
Conference Presentation
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tuw.project.title
Precision Tests for Dark Energy and Modified Gravity with Tabletop Experiments
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tuw.researchTopic.id
C6
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tuw.researchTopic.name
Modeling and Simulation
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tuw.researchTopic.value
100
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tuw.linking
https://github.com/C-Briddon/SELCIE
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tuw.publication.orgunit
E141-04 - Forschungsbereich Neutron- and Quantum Physics
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dc.rights.identifier
Urheberrechtsschutz
de
dc.rights.identifier
In Copyright
en
tuw.event.name
Tabletop Scale Cosmology 2025
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tuw.event.startdate
20-05-2025
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tuw.event.enddate
23-05-2025
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tuw.event.online
Online
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tuw.event.type
Event for scientific audience
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tuw.event.country
GB
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tuw.event.presenter
Briddon, Chad
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tuw.presentation.online
Online
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wb.sciencebranch
Physik, Astronomie
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wb.sciencebranch.oefos
1030
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wb.sciencebranch.value
100
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item.openaccessfulltext
Open Access
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item.grantfulltext
open
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item.mimetype
application/pdf
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item.languageiso639-1
en
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item.fulltext
with Fulltext
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item.openairetype
conference paper not in proceedings
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item.cerifentitytype
Publications
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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crisitem.author.dept
E141-04 - Forschungsbereich Neutron- and Quantum Physics
