Open superstring first mass level effective Lagrangian: Massive spin-2 in an electromagnetic background

Autor(es)

Benakli, Karim ; Daniel, Cassiano A. ; Ke, Wenqi

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters B; v. 838, p. 7-pg., 2023-01-17.

Resumo

Minimal coupling leads to problems such as loss of causality if one wants to describe charged particles of spin greater than one propagating in a constant electromagnetic background. Regge trajectories in string theory contain such states, so their study may allow us to investigate possible avenues to remedy the pathologies. We present here two explicit forms, related by field redefinitions, of the Lagrangian describing the bosonic states in the first massive level of open superstrings in four dimensions. The first one reduces, when the electromagnetic field is set to zero, to the Fierz-Pauli Lagrangian for the spin-2 mode. The second one is a more compact form which simplifies the derivation of a Fierz-Pauli system of equations of motion and constraints.(c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3. (AU)

• Processo FAPESP: 22/14599-0 - Amplitudes de espalhamento em AdS5 × S5
• Beneficiário: Cassiano Antonio Daniel
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 20/10183-9 - Amplitudes de espalhamento em AdS5 × S5
• Beneficiário: Cassiano Antonio Daniel
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto