2026-06-08T04:18:57Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/725712023-08-25T23:37:39Zcom_20.500.14352_14col_20.500.14352_15

Junction conditions of Palatini f (R,T) gravity Rosa, Joao Luis Rubiera García, Diego 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. 2023-06-22T12:27:53Z 2023-06-22T12:27:53Z 2023-06-22T12:27:53Z 2022-11-06 journal article https://hdl.handle.net/20.500.14352/72571 2470-0010 10.1103/PhysRevD.106.064007 eng CA18108 Mobilitas Pluss (MOBJD647) PID2019-108485-GB-I00/AEI/10.13039/501100011033 2018T1/TIC-10431 PROMETEO/2020/079 (PTDC/FIS-PAR/31938/2017, PTDC/FIS-OUT/29048/2017) 006/2018 PRONEX; 0015/2019 open access Amer Physical Soc