Papers
Topics
Authors
Recent
Assistant
AI Research Assistant
Well-researched responses based on relevant abstracts and paper content.
Custom Instructions Pro
Preferences or requirements that you'd like Emergent Mind to consider when generating responses.
Gemini 2.5 Flash
Gemini 2.5 Flash 60 tok/s
Gemini 2.5 Pro 54 tok/s Pro
GPT-5 Medium 30 tok/s Pro
GPT-5 High 35 tok/s Pro
GPT-4o 99 tok/s Pro
Kimi K2 176 tok/s Pro
GPT OSS 120B 448 tok/s Pro
Claude Sonnet 4.5 37 tok/s Pro
2000 character limit reached

Constraints on non-local gravity from binary pulsars gravitational emission (2312.02862v1)

Published 5 Dec 2023 in gr-qc

Abstract: 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.

Definition Search Book Streamline Icon: https://streamlinehq.com
References (45)
  1. Observational constraints in nonlocal gravity: the deser-woodard case. Journal of Cosmology and Astroparticle Physics 2019, 045–045. URL: https://doi.org/10.1088%2F1475-7516%2F2019%2F03%2F045, doi:10.1088/1475-7516/2019/03/045.
  2. A massive pulsar in a compact relativistic binary. Science 340. URL: https://doi.org/10.1126%2Fscience.1233232, doi:10.1126/science.1233232.
  3. Nonlocal Teleparallel Cosmology. Eur. Phys. J. C 77, 628. doi:10.1140/epjc/s10052-017-5210-1, arXiv:1709.02692.
  4. Towards singularity- and ghost-free theories of gravity. Physical Review Letters 108. URL: https://doi.org/10.1103%2Fphysrevlett.108.031101, doi:10.1103/physrevlett.108.031101.
  5. Classical properties of non-local, ghost- and singularity-free gravity. Journal of Cosmology and Astroparticle Physics 2018, 034–034. URL: https://doi.org/10.1088%2F1475-7516%2F2018%2F09%2F034, doi:10.1088/1475-7516/2018/09/034.
  6. Generalized ghost-free propagators in nonlocal field theories. Physical Review D 101. URL: https://doi.org/10.1103%2Fphysrevd.101.084019, doi:10.1103/physrevd.101.084019.
  7. Nonlocal gravity cosmology: An overview. International Journal of Modern Physics D 31. URL: https://doi.org/10.1142%2Fs0218271822300099, doi:10.1142/s0218271822300099.
  8. Gravitational waves in non-local gravity. Classical and Quantum Gravity 38, 175008. URL: https://doi.org/10.1088%2F1361-6382%2Fac1720, doi:10.1088/1361-6382/ac1720.
  9. Considerations on gravitational waves in higher-order local and non-local gravity. Phys. Lett. B 810, 135821. doi:10.1016/j.physletb.2020.135821, arXiv:2009.12777.
  10. Gravitational radiation in higher order non-local gravity. International Journal of Geometric Methods in Modern Physics 19. URL: https://doi.org/10.1142%2Fs0219887822501596, doi:10.1142/s0219887822501596.
  11. Nonlocal cosmology. Phys. Rev. Lett. 99, 111301. URL: https://link.aps.org/doi/10.1103/PhysRevLett.99.111301, doi:10.1103/PhysRevLett.99.111301.
  12. High-precision timing of 42 millisecond pulsars with the european pulsar timing array. Monthly Notices of the Royal Astronomical Society 458, 3341–3380. URL: https://doi.org/10.1093%2Fmnras%2Fstw483, doi:10.1093/mnras/stw483.
  13. Constraining nonlocal gravity by s2 star orbits. Physical Review D 99. URL: https://doi.org/10.1103%2Fphysrevd.99.044053, doi:10.1103/physrevd.99.044053.
  14. Very long baseline astrometry of PSR j1012+5307 and its implications on alternative theories of gravity. The Astrophysical Journal 896, 85. URL: https://doi.org/10.3847%2F1538-4357%2Fab8f27, doi:10.3847/1538-4357/ab8f27.
  15. Gravitational radiation in infinite derivative gravity and connections to effective quantum gravity. Physical Review D 98. URL: https://doi.org/10.1103%2Fphysrevd.98.044049, doi:10.1103/physrevd.98.044049.
  16. Infinite derivative gravity: A finite number of predictions. arXiv:1904.10248.
  17. Non-local quantum theory of the scalar field. Commun. Math. Phys. 5, 42–56. doi:10.1007/BF01646357.
  18. On a class of relativistic invariant distributions. Commun. Math. Phys. 7, 138–151. doi:10.1007/BF01648331.
  19. Quantization of non-local field theory. Int. J. Theor. Phys. 10, 19–37. doi:10.1007/BF01808314.
  20. Electron self-energy in nonlocal field theory. Annals Phys. 103, 169–184. doi:10.1016/0003-4916(77)90267-6.
  21. On the choice of form factors in non-local quantum electrodynamics. Nucl. Phys. B 44, 541–557. doi:10.1016/0550-3213(72)90136-8.
  22. The Problem of Nonlocality in String Theory. Nucl. Phys. B 325, 389. doi:10.1016/0550-3213(89)90461-6.
  23. The relativistic pulsar-white dwarf binary PSR j1738+++0333 - II. the most stringent test of scalar-tensor gravity. Monthly Notices of the Royal Astronomical Society 423, 3328–3343. URL: https://doi.org/10.1111%2Fj.1365-2966.2012.21253.x, doi:10.1111/j.1365-2966.2012.21253.x.
  24. The relativistic pulsar-white dwarf binary PSR j1738+0333 - II. the most stringent test of scalar-tensor gravity. Monthly Notices of the Royal Astronomical Society 423, 3328–3343. URL: https://doi.org/10.1111%2Fj.1365-2966.2012.21253.x, doi:10.1111/j.1365-2966.2012.21253.x.
  25. Tests of the gravitational inverse-square law below the dark-energy length scale. Phys. Rev. Lett. 98, 021101. doi:10.1103/PhysRevLett.98.021101, arXiv:hep-ph/0611184.
  26. Quadrupolar gravitational radiation as a test-bed for f(r)-gravity. Astroparticle Physics 35, 257–265. URL: https://doi.org/10.1016%2Fj.astropartphys.2011.08.006, doi:10.1016/j.astropartphys.2011.08.006.
  27. Testing f  (r) theories using the first time derivative of the orbital period of the binary pulsars. Monthly Notices of the Royal Astronomical Society 431, 741–748. URL: https://doi.org/10.1093%2Fmnras%2Fstt216, doi:10.1093/mnras/stt216.
  28. Probing the physical and mathematical structure of f(r)-gravity by PSR j0348 + 0432. International Journal of Geometric Methods in Modern Physics 12, 1550040. URL: https://doi.org/10.1142%2Fs0219887815500401, doi:10.1142/s0219887815500401.
  29. Gravitational Waves. Vol. 1: Theory and Experiments. Oxford University Press. doi:10.1093/acprof:oso/9780198570745.001.0001.
  30. Nonlocal Gravity: Fundamental Tetrads and Constitutive Relations. Symmetry 14, 2116. doi:10.3390/sym14102116, arXiv:2209.05817.
  31. Super-renormalizable quantum gravity. Physical Review D 86. URL: https://doi.org/10.1103%2Fphysrevd.86.044005, doi:10.1103/physrevd.86.044005.
  32. Black holes in an ultraviolet complete quantum gravity. Physics Letters B 695, 397–400. URL: https://doi.org/10.1016%2Fj.physletb.2010.11.046, doi:10.1016/j.physletb.2010.11.046.
  33. Universally finite gravitational and gauge theories. Nucl. Phys. B 900, 147–169. doi:10.1016/j.nuclphysb.2015.09.006, arXiv:1503.00261.
  34. Superrenormalizable quantum gravity with complex ghosts. Phys. Lett. B 755, 279–284. doi:10.1016/j.physletb.2016.02.021, arXiv:1512.07600.
  35. Constraining energy-momentum-squared gravity by binary pulsar observations. Physical Review D 105. URL: https://doi.org/10.1103%2Fphysrevd.105.044014, doi:10.1103/physrevd.105.044014.
  36. On the Hamiltonian structure of non-local field theories. Nuovo Cim. 10, 648–667. doi:10.1007/bf02815288.
  37. On the Invariant regularization in relativistic quantum theory. Rev. Mod. Phys. 21, 434–444. doi:10.1103/RevModPhys.21.434.
  38. Using long-term millisecond pulsar timing to obtain physical characteristics of the bulge globular cluster terzan 5. The Astrophysical Journal 845, 148. URL: https://doi.org/10.3847%2F1538-4357%2Faa7ed7, doi:10.3847/1538-4357/aa7ed7.
  39. Constitutive law of nonlocal gravity. Physical Review D 99. URL: https://doi.org/10.1103%2Fphysrevd.99.104013, doi:10.1103/physrevd.99.104013.
  40. PSR j1012+5307: a millisecond pulsar with an extremely low-mass white dwarf companion. Monthly Notices of the Royal Astronomical Society 494, 4031–4042. URL: https://doi.org/10.1093%2Fmnras%2Fstaa983, doi:10.1093/mnras/staa983.
  41. Possible Causes of the Secular Increase in Pulsar Periods. Soviet Astronomy 13, 562.
  42. Stringy gravity at short distances. arXiv:hep-th/0309093.
  43. Testing general relativity with pulsar timing. Living Reviews in Relativity 6. URL: https://doi.org/10.12942%2Flrr-2003-5, doi:10.12942/lrr-2003-5.
  44. Further Experimental Tests of Relativistic Gravity Using the Binary Pulsar PSR 1913+16. Apj 345, 434. doi:10.1086/167917.
  45. Pulsar scintillation studies with LOFAR. I. The census. AAP 663, A116. doi:10.1051/0004-6361/202142980, arXiv:2203.10409.

Summary

We haven't generated a summary for this paper yet.

Ai Sparkles Streamline Icon: https://streamlinehq.com Summarize Now
Lightbulb Streamline Icon: https://streamlinehq.com

Continue Learning

We haven't generated follow-up questions for this paper yet.

Ai Sparkles Streamline Icon: https://streamlinehq.com Generate Now

Authors (1)

  1. Amodio Carleo
List To Do Tasks Checklist Streamline Icon: https://streamlinehq.com

Collections

Sign up for free to add this paper to one or more collections.

User Circle Single Streamline Icon: https://streamlinehq.com Sign Up
X Twitter Logo Streamline Icon: https://streamlinehq.com

Tweets

This paper has been mentioned in 1 post and received 0 likes.

User Circle Single Streamline Icon: https://streamlinehq.com Sign Up to View