RT Journal Article
T1 Junction conditions of Palatini f (R,T) gravity
A1 Rosa, Joao Luis
A1 Rubiera García, Diego
AB We work out the junction conditions for the Palatini f(R, T) extension of general relativity, where f is an arbitrary function of the curvature scalar R of an independent connection, and of the trace T of the stress -energy tensor of the matter fields. We find such conditions on the allowed discontinuities of several geometrical and matter quantities, some of which depart from their metric counterparts, and in turn extend their Palatini f(R) versions via some new T-dependent terms. Moreover, we also identify some "exceptional cases " of f(R,T) Lagrangians such that some of these conditions can be discarded, thus allowing for further discontinuities in R and T and, in contrast with other theories of gravity, they are shown to not give rise to extra components in the matter sector, e.g., momentum fluxes and double gravitational layers. We discuss how these junction conditions, together with the nonconservation of the stress-energy tensor ascribed to these theories, may induce nontrivial changes in the shape of specific applications such as traversable thin-shell wormholes.
PB Amer Physical Soc
SN 2470-0010
YR 2022
FD 2022-11-06
LK https://hdl.handle.net/20.500.14352/72571
UL https://hdl.handle.net/20.500.14352/72571
LA eng
NO © 2022 American Physical SocietyJ. L. R. is supported by the European Regional Development Fund and the program Mobilitas Pluss (MOBJD647), and thanks the Department of Theoretical Physics at the Complutense University of Madrid for their hospitality during the elaboration of this work. D. R.-G. is funded by the Atraccion de Talento Investigador program of the Comunidad de Madrid (Spain) No. 2018T1/TIC-10431 and acknowledges further support from the Ministerio de Ciencia, Innovacion y Universidades (Spain) Project No. PID2019-108485 GB-I00/AEI/10.13039/501100011033 ("PGC Generacion de Conocimiento") and the FCT Projects No. PTDC/FIS-PAR/31938/2017 and No. PTDC/FIS-OUT/29048/2017. This work is also supported by the project PROMETEO/2020/079 (Generalitat Valenciana) and the Edital 006/2018 PRONEX (FAPESQ-PB/CNPQ, Brazil, Grant No. 0015/2019). This article is based upon work from COST Action CA18108, supported by COST (European Cooperation in Science and Technology).
NO Unión Europea. Horizonte 2020
NO Fondo Europeo de Desarrollo Regional (FEDER)
NO Ministerio de Ciencia, Innovacion y Universidades (MICIU)
NO Comunidad de Madrid
NO Generalitat Valenciana
NO Fundação para a Ciência e a Tecnologia (FCT)
NO FAPESQPB/CNPQ
DS Docta Complutense
RD 10 abr 2025