Constraints on non-local gravity from binary pulsars gravitational emission Article Swipe
Non-local theories of gravity are considered extended theories of gravity, meaning that when the non-local terms are canceled out, the limit of General Relativity (GR) is obtained. Several reasons have led us to consider this theory with increasing interest, but primarily non-locality emerges in a natural way as a side effect of the introduction of quantum corrections to GR, the purpose of which was to cure the singularity problem, both at astrophysical and cosmological level. In this paper we studied a peculiar case of the so called Deser-Woodard theory consisting in the addition of a non-local term to the Hilbert-Einstein lagrangian, and we derived for the first time contraints on the dimensionaless non-local parameter A by exploiting the predicted gravitational wave emission in three binary pulsars, namely PSR J1012+5307, PSR J0348+0432 and PSR $J1738+0333. We discovered that the instantaneous flux strongly depends on A and that the best constraints (0.12 < A < 0.16) come from PSR J1012+5307, for which the GR prediction is outside the observational ranges. However, since for PSR J1012 + 5307 scintillation is suspected, as emerged in a recent census by LOFAR, corruptions in pulsar timing could be hidden. We finally comment on the usability and reliability of this type of test for extended theories of gravity.
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- Type
- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2312.02862
- https://arxiv.org/pdf/2312.02862
- OA Status
- green
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4389422045
All OpenAlex metadata
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- OpenAlex ID
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https://openalex.org/W4389422045Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2312.02862Digital Object Identifier
- Title
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Constraints on non-local gravity from binary pulsars gravitational emissionWork title
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preprintOpenAlex work type
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enPrimary language
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2023Year of publication
- Publication date
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2023-12-05Full publication date if available
- Authors
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Amodio CarleoList of authors in order
- Landing page
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https://arxiv.org/abs/2312.02862Publisher landing page
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https://arxiv.org/pdf/2312.02862Direct link to full text PDF
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YesWhether a free full text is available
- OA status
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greenOpen access status per OpenAlex
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https://arxiv.org/pdf/2312.02862Direct OA link when available
- Concepts
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Physics, Pulsar, Neutron star, General relativity, Theoretical physics, Quantum gravity, Strong gravity, Astrophysics, Gravitation, Mathematical physics, Astronomy, Quantum mechanics, QuantumTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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