Speaker
Description
We present two nonlinear electromagnetic black hole solutions belonging to the Kerr-Newman-AdS-NUT family, referred to as cubic potential and quartic potential. These solutions are characterized by mass, angular momentum, electric and magnetic charge, the NUT parameter, the cosmological constant, and a nonlinear parameter. We provide the necessary electromagnetic potentials to generate these solutions, which satisfy the alignment conditions. We analyze the energy conditions and observe that the nonlinear parameter induces a significant negative pressure. According to Einstein's equations, this negative pressure contribution can be interpreted as mimicking the presence of a cosmological constant on the geometric side. Additionally, we present a Lagrangian in terms of the potentials and the trace of the energy-momentum tensor.
