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DC Field | Value | Language |
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dc.contributor.author | Bahamonde, Sebastian | - |
dc.contributor.author | Hohmann, Manuel | - |
dc.contributor.author | Caruana, Maria | - |
dc.contributor.author | Dialektopoulos, Konstantinos F. | - |
dc.contributor.author | Gakis, Viktor | - |
dc.contributor.author | Said, Jackson | - |
dc.contributor.author | Saridakis, Emmanuel N. | - |
dc.contributor.author | Sultana, Joseph | - |
dc.date.accessioned | 2022-02-16T08:16:28Z | - |
dc.date.available | 2022-02-16T08:16:28Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Bahamonde, S., Hohmann, M., Caruana, M., Dialektopoulos, K. F., Gakis, V., Said, J. L., ... & Sultana, J. (2021). Gravitational-wave propagation and polarizations in the teleparallel analog of Horndeski gravity. Physical Review D, 104(8), 084082. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/89180 | - |
dc.description.abstract | Gravitational waves (GWs) have opened a new window on fundamental physics in a number of important ways. The next generation of GW detectors may reveal more information about the polarization structure of GWs. Additionally, there is growing interest in theories of gravity beyond general relativity (GR). One such theory which remains viable within the context of recent measurements of the speed of propagation of GWs is the teleparallel analog of Horndeski gravity. In this work, we explore the polarization structure of this newly proposed formulation of Horndeski theory. In curvature-based gravity, Horndeski theory is almost synonymous with extensions to GR since it spans a large portion of these possible extensions. We perform this calculation by taking perturbations about a Minkowski background and consider which mode propagates. The result is that the polarization structure depends on the choice of model parameters in the teleparallel Horndeski Lagrangian with a maximum of seven propagating degrees of freedom. While the curvature-based Horndeski results follows as a particular limit within this setup, we find a much richer structure of both massive and massless cases which produce scalar-vector-tensor propagating degrees of freedom. We also find that the GW polarization that emerges from the teleparallel analog of Horndeski gravity results in analogous massive and massless modes which take on at most four polarizations in the massless sector and two scalar ones in the massive sector. In none of the cases do we find vector polarizations. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | American Physical Society | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Gravitational waves | en_GB |
dc.subject | Gravity | en_GB |
dc.subject | Astronomy -- Observations | en_GB |
dc.subject | Gravitation | en_GB |
dc.subject | Observations, Astronomical | en_GB |
dc.subject | Cosmology | en_GB |
dc.subject | Quantum field theory | en_GB |
dc.subject | Polarization (Electricity) | en_GB |
dc.title | Gravitational-wave propagation and polarizations in the teleparallel analog of Horndeski gravity | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1103/PhysRevD.104.084082 | - |
dc.publication.title | Physical Review D | en_GB |
Appears in Collections: | Scholarly Works - InsSSA |
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Gravitational-wave propagation and polarizations in the teleparallel analog of Horndeski gravity.pdf Restricted Access | 658.73 kB | Adobe PDF | View/Open Request a copy |
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