2016/07/31 by Cecilia Bejarano, Francisco S. N. Lobo, Gonzalo J. Olmo +1 · 28 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Energy condition #General relativity #Metric (unit) #Metric tensor #Noncommutative and Quantum Gravity Theories #Pointwise #Spacetime #Theory of relativity #Wormhole #f(R) gravity #gr-qc #hep-th
paper · pdf · doi:10.1140/epjc/s10052-017-5353-0
published in The European Physical Journal C 77(11), 776 (Springer Science+Business Media) · 13 pages, 7 figures. Significant changes mainly in introduction and conclusions. Accepted for publication in Eur. Phys. J. C
openalex created_date 2016/07/22 · openalex publication_date 2017/11/01 · arxiv created 2017/11/09 · arxiv updated 2017/12/19 · openalex updated_date 2026/08/05
Wormholes are hypothetical shortcuts in spacetime that in general relativity unavoidably violate all of the pointwise energy conditions. In this paper, we consider several wormhole spacetimes that, as opposed to the standard designer procedure frequently employed in the literature, arise directly from gravitational actions including additional terms resulting from contractions of the Ricci tensor with the metric, and which are formulated assuming independence between metric and connection (Palatini approach). We reinterpret such wormhole solutions under the prism of General Relativity and study the matter sources that thread them. We discuss the size of violation of the energy conditions in different cases and how this is related to the same spacetimes when viewed from the modified gravity side.