3 papers
quant-ph2022
Energy levels for -symmetric deformation of the Mathieu equation
E. Cavalcanti, N. M. Alvarenga, F. Reis +3
We propose a non-Hermitian deformation of the Mathieu equation that preserves symmetry and study its spectrum and the transition from -unbroken to $\ma…
hep-th2020
The bosonic and fermionic propagators under an external electromagnetic field in a Euclidean manifold
Emerson B. S. Corrêa, Carlos André Bahia, José André Lourenço
In this paper, we will calculate the bosonic as well as fermionic propagators under classical homogeneous and constant magnetic and electric fields in a Euclidean space. For this,…
hep-th2018
Appearance and disappearance of thermal renormalons
Erich Cavalcanti, José A Lourenço, Cesar A Linhares +1
We consider a scalar field model with a interaction and compute the mass correction at next-to-leading order in a large- expansion to study the summability of the pert…