Supergravity Scattering Amplitudes - Archive ouverte HAL
Article Dans Une Revue Physical Review D Année : 2023

Supergravity Scattering Amplitudes

Tony Gherghetta
  • Fonction : Auteur
Keith A. Olive
  • Fonction : Auteur
Sarunas Verner
  • Fonction : Auteur

Résumé

Supergravity theories with non-minimal Kähler potentials are characterized by a non-trivial field space manifold with corresponding non-trivial kinetic terms. The scattering amplitudes in these theories can be calculated at fixed background field values by making a field redefinition to Riemann normal coordinates. Because of the Kähler structure of supergravity, a more compact method for calculating amplitudes is obtained by a redefinition to Kähler normal coordinates. We compare both methods and calculate the explicit transformations and amplitudes for several examples in the context of no-scale supergravity with one and two chiral superfields. We show that in all cases the equivalence of the scattering amplitudes using either Riemann normal or Kähler normal coordinates is possible only at extremal points of the scalar potential.
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Dates et versions

hal-04006585 , version 1 (26-02-2024)

Identifiants

Citer

Emilian Dudas, Tony Gherghetta, Keith A. Olive, Sarunas Verner. Supergravity Scattering Amplitudes. Physical Review D, 2023, 108 (7), pp.076024. ⟨10.1103/PhysRevD.108.076024⟩. ⟨hal-04006585⟩
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