Spin-spin interactions in massive gravity and higher derivative gravity theories

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10.1016.j.physletb.2013.11.064.pdf

Date

2014-01-20

Author

Gullu, Ibrahim
Tekin, Bayram

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We show that, in the weak field limit, at large separations, in sharp contrast to General Relativity (GR), all massive gravity theories predict distance-dependent spin alignments for spinning objects. For all separations GR requires anti-parallel spin orientations with spins pointing along the line joining the sources. Hence total spin is minimized in GR. On the other hand; while massive gravity at small separations (m(g)r <= 1.62) gives the same result as GR, for large separations (m(g)r > 1.62) the spins become parallel to each other and perpendicular to the line joining the objects. Namely, the potential energy is minimized when the total spin is maximized in massive gravity for large separations. We also compute the spin-spin interactions in quadratic gravity theories and find that while at large separations GR result is intact, at small separations, spins become perpendicular to the line joining sources and anti-parallel to each other. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.

Subject Keywords

Nuclear and High Energy Physics

URI

https://hdl.handle.net/11511/39378

Journal

PHYSICS LETTERS B

DOI

https://doi.org/10.1016/j.physletb.2013.11.064

Collections

Department of Physics, Article

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Citation Formats

I. Gullu and B. Tekin, “Spin-spin interactions in massive gravity and higher derivative gravity theories,” PHYSICS LETTERS B, pp. 268–273, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39378.