TY  - JOUR
AU  - Olmo, G. J.
AU  - Rubiera-Garcia, D.
AU  - Sanchez-Puente, A.
PY  - 2018
DA  - 2018//
TI  - Accelerated observers and the notion of singular spacetime
T2  - Class. Quantum Gravity
JO  - Classical and Quantum Gravity
SP  - 055010
EP  - 18pp
VL  - 35
IS  - 5
PB  - Iop Publishing Ltd
KW  - general relativity
KW  - geodesic behaviour
KW  - black holes
KW  - spacetime singularities
KW  - modified theories of gravity
AB  - Geodesic completeness is typically regarded as a basic criterion to determine whether a given spacetime is regular or singular. However, the principle of general covariance does not privilege any family of observers over the others and, therefore, observers with arbitrary motions should be able to provide a complete physical description of the world. This suggests that in a regular spacetime, all physically acceptable observers should have complete paths. In this work we explore this idea by studying the motion of accelerated observers in spherically symmetric spacetimes and illustrate it by considering two geodesically complete black hole spacetimes recently described in the literature. We show that for bound and locally unbound accelerations, the paths of accelerated test particles are complete, providing further support to the regularity of such spacetimes.
SN  - 0264-9381
UR  - http://arxiv.org/abs/1710.08712
UR  - https://doi.org/10.1088/1361-6382/aaa849
DO  - 10.1088/1361-6382/aaa849
LA  - English
N1  - WOS:000424042100001
ID  - Olmo_etal2018
ER  -