RT Journal Article
T1 Seeking for resonances in unitarized one-loop graviton-graviton scattering
A1 Delgado, Rafael L
A1 Dobado González, Antonio
A1 Espriu, Domènec
AB Some effective field theories exhibit dynamical resonances that, when properly included, mitigate their bad behavior at high energies. Unitarization of the partial wave amplitudes is the preferred method to unveil such resonances. Interpreting the Einstein-Hilbert theory in the spirit of effective Lagrangians, we implement the inverse amplitude method and unitarize the one-loop level graviton-graviton scattering in pure gravity. Due to the presence of infrared divergences, the analysis requires a careful treatment of the infrared region and the introduction of infrared regulators, carefully selected in order to fulfill perturbative unitarity.
PB Amer Physical Soc
SN 2470-0010
YR 2023
FD 2023-03-27
LK https://hdl.handle.net/20.500.14352/73389
UL https://hdl.handle.net/20.500.14352/73389
LA eng
NO © 2023 American Physical SocietyThe authors thank J. A. Oller for reading the manuscript and useful comments. This research is partly supported by the Ministerio de Ciencia e Innovacion under research Grants No. PID2019-108655 GB-I00, No. PID2019- 105614 GB-C21, and No. PID2021-124473NB-I00 (R. L. Delgado) and the "Unit of Excellence Maria de Maeztu 2020-2023" award to the Institute of Cosmos Sciences (CEX2019-000918-M), and the Grant No. 2017-SGR-929 from Generalitat de Catalunya. R. L. Delgado was also financially supported by the Ramon Areces Foundation postdoctoral fellowship, the Istituto Nazionale di Fisica Nucleare (INFN) postdoctoral Fellowship No. AAOO DGF-2019-0000329.
NO Ministerio de Ciencia e Innovación (MICINN)
NO Generalitat de Catalunya
NO Unidad de Excelencia María de Maeztu (MICINN)
NO Istituto Nazionale di Fisica Nucleare (INFN)
NO Fundación Ramón Areces
DS Docta Complutense
RD 5 abr 2025