In this contribution, we present our recent compact master formulas for the multiphoton amplitudes of a scalar propagator in a constant background field using the worldline fomulation of quantum field theory. The constant field has been included nonperturbatively, which is crucial for strong external fields. A possible application is the scattering of photons by electrons in a strong magnetic field, a process that has been a subject of great interest since the discovery of astrophysical objects like radio pulsars, which provide evidence that magnetic fields of the order of 1012G are present in nature. The presence of a strong external field leads to a strong deviation from the classical scattering amplitudes. We explicitly work out the Compton scattering amplitude in a magnetic field, which is a process of potential relevance for astrophysics. Our final result is compact and suitable for numerical integration.
Multiphoton amplitude in a constant background field / Ahmad, Aftab; Ahmadiniaz, Naser; Corradini, Olindo; Pyo Kim, Sang; Schubert, Christian. - In: EPJ WEB OF CONFERENCES. - ISSN 2101-6275. - 168:(2018), p. 04003. (Intervento presentato al convegno 13th International Conference on Gravitation, Astrophysics, and Cosmology. ICGAC 2017 and the 15th Italian-Korean Joint Symposium on Relativistic Astrophysics, IK 2017 tenutosi a Ewha Womans University, korea nel 2017) [10.1051/epjconf/201816804003].
Multiphoton amplitude in a constant background field
Olindo Corradini;
2018
Abstract
In this contribution, we present our recent compact master formulas for the multiphoton amplitudes of a scalar propagator in a constant background field using the worldline fomulation of quantum field theory. The constant field has been included nonperturbatively, which is crucial for strong external fields. A possible application is the scattering of photons by electrons in a strong magnetic field, a process that has been a subject of great interest since the discovery of astrophysical objects like radio pulsars, which provide evidence that magnetic fields of the order of 1012G are present in nature. The presence of a strong external field leads to a strong deviation from the classical scattering amplitudes. We explicitly work out the Compton scattering amplitude in a magnetic field, which is a process of potential relevance for astrophysics. Our final result is compact and suitable for numerical integration.File | Dimensione | Formato | |
---|---|---|---|
epjconf_icgaxiii-ik2018_04003.pdf
Open access
Tipologia:
Versione pubblicata dall'editore
Dimensione
145.15 kB
Formato
Adobe PDF
|
145.15 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris