TY  - JOUR
AU  - Magalhaes, R. B.
AU  - Crispino, L. C. B.
AU  - Olmo, G. J.
PY  - 2022
DA  - 2022//
TI  - Compact objects in quadratic Palatini gravity generated by a free scalar field
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 064007
EP  - 15pp
VL  - 105
IS  - 6
PB  - Amer Physical Soc
AB  - We study the correspondence that connects the space of solutions of general relativity (GR) with that of Ricci-based gravity theories (RBGs) of the f(R, Q) type in the metric-affinc formulation, where Q = R(mu nu)R(mu nu). We focus on the case of scalar matter and show that when one considers a free massless scalar in the GR frame, important simplifications arise that allow one to establish the correspondence for arbitrary f (R, Q) Lagrangian. We particularize the analysis to a quadratic f (R, Q) theory and use the spherically symmetric, static solution of Jannis-Newman-Winicour as seed to generate new compact objects in our target theory. We find that two different types of solutions emerge, one representing naked singularities and another corresponding to asymmetric wormholes with bounded curvature scalars everywhere. The latter solutions, nonetheless, are geodesically incomplete.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2203.02712
UR  - https://doi.org/10.1103/PhysRevD.105.064007
DO  - 10.1103/PhysRevD.105.064007
LA  - English
N1  - WOS:000767103000006
ID  - Magalhaes_etal2022
ER  -