Graviton bending in quantum gravity from oneloop 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 spin0, spin $$\frac{1}{2}$$ and spin1 particles [N. E. J. BjerrumBohr, J. F. Donoghue, B. R. Holstein, L. Planté, and P. Vanhove, Phys. Rev. Lett. 114, 061301 (2015); N. E. J. BjerrumBohr, 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 lowenergy limit. We also compare bending angles for scalar, photon and graviton projectiles under different circumstances.
 Authors:

 SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States). Dept. of Physics
 Publication Date:
 Research Org.:
 SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1526336
 Alternate Identifier(s):
 OSTI ID: 1546745
 Grant/Contract Number:
 AC0276SF00515
 Resource Type:
 Published Article
 Journal Name:
 Physical Review D
 Additional Journal Information:
 Journal Volume: 99; Journal Issue: 12; Journal ID: ISSN 24700010
 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, HuanHang. Graviton bending in quantum gravity from oneloop amplitudes. United States: N. p., 2019.
Web. doi:10.1103/physrevd.99.126008.
Chi, HuanHang. Graviton bending in quantum gravity from oneloop amplitudes. United States. https://doi.org/10.1103/physrevd.99.126008
Chi, HuanHang. Fri .
"Graviton bending in quantum gravity from oneloop amplitudes". United States. https://doi.org/10.1103/physrevd.99.126008.
@article{osti_1526336,
title = {Graviton bending in quantum gravity from oneloop amplitudes},
author = {Chi, HuanHang},
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 spin0, spin $\frac{1}{2}$ and spin1 particles [N. E. J. BjerrumBohr, J. F. Donoghue, B. R. Holstein, L. Planté, and P. Vanhove, Phys. Rev. Lett. 114, 061301 (2015); N. E. J. BjerrumBohr, 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 lowenergy 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}
}
https://doi.org/10.1103/physrevd.99.126008
Web of Science
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