3 papers
gr-qc2026
Dark-Sector Effects on the Phase Structure of Nonlinear Magnetic AdS Black Holes
Carlos E. Romero-Figueroa, J. R. Villanueva
We investigate the effects of perfect fluid dark matter (PFDM) and a dark-energy field on the phase structure of a nonlinear magnetically charged Anti--de Sitter (AdS) black hole.…
cond-mat.stat-mech2026
Geometric Universality and Thermodynamic Microstructure of Real Fluids in a Unified Entropic Framework
Carlos E. Romero-Figueroa, Jose Miguel Ladino, Sasha A. Zaldivar +1
We introduce a unified entropic framework for real fluids that encompasses the van der Waals, Berthelot, Redlich Kwong, and Peng Robinson equations of state within a common thermod…
gr-qc2026
Probing Black Hole Thermodynamics and Microstructure via the Shadow of Sagittarius A*
Jose Miguel Ladino, Carlos E. Romero-Figueroa, Hernando Quevedo
We explore the connection between black hole shadows, thermodynamic phase structure, and microstructure of charged and rotating black holes within General Relativity and Geometroth…