Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 82, Issue 11, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-022-11018-0
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- SCOAP3
- SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development
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This paper revisits the possibility of improving the restrictive conditions for safe travel through wormhole throats by considering the relation between traversability and tides in thin-shell wormholes. The study focuses on wormholes mathematically constructed from background geometries that are solutions of scalar-tensor theories. The advantages of working within such frameworks are examined by analyzing the dependence of extrinsic curvature and tides on the parameters determining the departure from pure relativity, as well as the behavior of tides in the smooth regions of the geometries. Other related approaches within pure relativity are also discussed in the appendices.
Traversability in relation with tides in thin-shell wormholes is revisited to investigate the possibility of improving recently noted restrictive conditions for a safe travel across a wormhole throat. We consider wormholes mathematically constructed starting from background geometries which are solutions of scalar-tensor theories as dilaton gravity and Brans-Dicke gravity. The advantages of working within such frameworks are studied by examining the dependence of the extrinsic curvature and tides at the throat with the parameters determining the departure from pure relativity; the associated behaviour of tides in the smooth regions of the geometries is also analyzed. Other related but different approaches within pure relativity are discussed in the appendices.
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