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Title: Graviton bending in quantum gravity from one-loop amplitudes

Abstract

We study the bending of gravitons that pass near a massive object like the Sun, using scattering amplitudes in which the Sun is represented by a massive scalar particle. Our results complete previous work on the bending angles of massless spin-0, spin -$$\frac{1}{2}$$ and spin-1 particles [N. E. J. Bjerrum-Bohr, J. F. Donoghue, B. R. Holstein, L. Planté, and P. Vanhove, Phys. Rev. Lett. 114, 061301 (2015); N. E. J. Bjerrum-Bohr, J. F. Donoghue, B. R. Holstein, L. Plante, and P. Vanhove, J. High Energy Phys. 11 (2016) 117; D. Bai and Y. Huang, Phys. Rev. D 95, 064045 (2017).], and provides more evidence for the violation of the equivalence principle at the quantum level, in the sense that the quantum corrections to bending angles for massless particles with different spins are different. Finally, we provide a universal expression for the bending angle in terms of coefficients of triangle and bubble integrals in the amplitudes in the low-energy limit. We also compare bending angles for scalar, photon and graviton projectiles under different circumstances.

Authors:
 [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States). Dept. of Physics
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1526336
Alternate Identifier(s):
OSTI ID: 1546745
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 99; Journal Issue: 12; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Chi, Huan-Hang. Graviton bending in quantum gravity from one-loop amplitudes. United States: N. p., 2019. Web. doi:10.1103/physrevd.99.126008.
Chi, Huan-Hang. Graviton bending in quantum gravity from one-loop amplitudes. United States. doi:10.1103/physrevd.99.126008.
Chi, Huan-Hang. Fri . "Graviton bending in quantum gravity from one-loop amplitudes". United States. doi:10.1103/physrevd.99.126008.
@article{osti_1526336,
title = {Graviton bending in quantum gravity from one-loop amplitudes},
author = {Chi, Huan-Hang},
abstractNote = {We study the bending of gravitons that pass near a massive object like the Sun, using scattering amplitudes in which the Sun is represented by a massive scalar particle. Our results complete previous work on the bending angles of massless spin-0, spin -$\frac{1}{2}$ and spin-1 particles [N. E. J. Bjerrum-Bohr, J. F. Donoghue, B. R. Holstein, L. Planté, and P. Vanhove, Phys. Rev. Lett. 114, 061301 (2015); N. E. J. Bjerrum-Bohr, J. F. Donoghue, B. R. Holstein, L. Plante, and P. Vanhove, J. High Energy Phys. 11 (2016) 117; D. Bai and Y. Huang, Phys. Rev. D 95, 064045 (2017).], and provides more evidence for the violation of the equivalence principle at the quantum level, in the sense that the quantum corrections to bending angles for massless particles with different spins are different. Finally, we provide a universal expression for the bending angle in terms of coefficients of triangle and bubble integrals in the amplitudes in the low-energy limit. We also compare bending angles for scalar, photon and graviton projectiles under different circumstances.},
doi = {10.1103/physrevd.99.126008},
journal = {Physical Review D},
number = 12,
volume = 99,
place = {United States},
year = {2019},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/physrevd.99.126008

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