3 papers
gr-qc2026
Nonrotating and rotating black holes with secondary disformal hair in a ghost-free metric-affine parity-violating scalar-torsion theory
E. Brito, G. Macedo, J. R. Nascimento +2
In this paper, we formulate a ghost-free metric-affine scalar-torsion model in which a pseudoscalar field is coupled to the Nieh--Yan density and derivatively coupled to the Einste…
gr-qc2026
Slowly rotating charged BTZ black hole solutions in Palatini Chern-Simons gravity
Flavio Bombacigno, Gonzalo J. Olmo, Emanuele Orazi +1
We consider a metric-affine formulation of Chern-Simons modified gravity in 2 + 1 dimensions. The theory is built requiring projective invariance, and the structure of the equation…
hep-th2025
Mixed gauge-gravity term and proper time
J. R. Nascimento, M. Paganelly, A. Yu. Petrov +1
We consider the four-dimensional action of spinors minimally coupled to a -gauge field in an Riemann-Cartan background. In this theory, we integrate over the spinors and stud…