4 papers
Dissipative Multi-Field Dynamics from Non-Hermitian Inflationary Potentials
S. D. Campos
In this work, we develop a perturbative framework for inflation driven by a complex inflaton with non-minimal gravitational coupling and a non-Hermitian potential. During the obser…
Complex Inflaton Potentials with Nonminimal Coupling: Robust Inflation and Geometric Reheating
S. D. Campos
We investigate an inflationary scenario driven by a complex scalar field nonminimally coupled to gravity and subject to a non-symmetric complex potential. The real part of the pote…
Low-Mass Neutron Stars and Effective Phase Transitions from a Hybrid Van der Waals-Polytropic Equation of State
P. H. F. Arruda, S. D. Campos
We study phase-transition-like behavior in neutron stars using a simplified, piecewise equation of state that couples a modified van der Waals-type core to a polytropic crust. The…
An approach to the leading Regge pole
S. D. Campos
Neglecting spin effects, one introduces here a subtle approximation for the scattering angle, which allows the obtaining of a logarithmic leading Regge pole, consistent with the Fr…