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dc.contributor.authorAnderson, David
dc.contributor.authorYunes, Nicolás
dc.contributor.authorBarausse, Enrico
dc.date.accessioned2017-04-13T19:04:59Z
dc.date.available2017-04-13T19:04:59Z
dc.date.issued2016-11
dc.identifier.citationAnderson, David, Nicolas Yunes, and Enrico Barausse. "Effect of cosmological evolution on Solar System constraints and on the scalarization of neutron stars in massless scalar-tensor theories." Physical Review D 94, no. 10 (November 2016). DOI:https://dx.doi.org/10.1103/PhysRevD.94.104064.en_US
dc.identifier.issn2470-0010
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/12718
dc.description.abstractCertain scalar-tensor theories of gravity that generalize Jordan-Fierz-Brans-Dicke theory are known to predict nontrivial phenomenology for neutron stars. In these theories, first proposed by Damour and Esposito-Farese, the scalar field has a standard kinetic term and couples conformally to the matter fields. The weak equivalence principle is therefore satisfied, but scalar effects may arise in strong-field regimes, e.g., allowing for violations of the strong equivalence principle in neutron stars (\spontaneous scalarization\") or in sufficiently tight binary neutron-star systems (\"dynamical/induced scalarization\"). The original scalar-tensor theory proposed by Damour and Esposito-Farese is in tension with Solar System constraints (for couplings that lead to scalarization), if one accounts for cosmological evolution of the scalar field and no mass term is included in the action. We extend here the conformal coupling of that theory, in order to ascertain if, in this way, Solar System tests can be passed, while retaining a nontrivial phenomenology for neutron stars. We find that, even with this generalized conformal coupling, it is impossible to construct a theory that passes both big bang nucleosynthesis and Solar System constraints, while simultaneously allowing for scalarization in isolated/binary neutron stars."en_US
dc.description.sponsorshipNSF (PHY-1250636); Marie Curie Career Integration (GALFORMBHS PCIG11-GA-2012-321608); Marie Sklodowska-Curie (690904)en_US
dc.language.isoen_USen_US
dc.titleEffect of cosmological evolution on Solar System constraints and on the scalarization of neutron stars in massless scalar-tensor theoriesen_US
dc.typeArticleen_US
mus.citation.issue10en_US
mus.citation.journaltitlePhysical Review Den_US
mus.citation.volume94en_US
mus.identifier.categoryPhysics & Mathematicsen_US
mus.identifier.doihttps://dx.doi.org/10.1103/PhysRevD.94.104064en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentPhysics.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage3en_US


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