Regular Article - Theoretical Physics
Gravitational form factors of the delta resonance in chiral EFT
Institut für Theoretische Physik II, Ruhr-Universität Bochum, 44780, Bochum, Germany
2 High Energy Physics Institute, Tbilisi State University, 0186, Tbilisi, Georgia
3 Helmholtz Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, Germany
4 Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425, Jülich, Germany
5 Tbilisi State University, 0186, Tbilisi, Georgia
6 Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, 510006, Guangzhou, China
7 Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Southern Nuclear Science Computing Center, South China Normal University, 510006, Guangzhou, China
Accepted: 6 October 2022
Published online: 13 October 2022
The leading one-loop corrections to the gravitational form factors of the delta resonance are calculated in the framework of chiral effective field theory. Various contributions to the energy–momentum tensor and the renormalization of the low-energy constants are worked out. Using the small scale expansion, expressions for static quantities are obtained and the real and imaginary parts of the gravitational form factors are calculated numerically.
© The Author(s) 2022
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