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Type: Artigo de periódico
Title: Swimming versus swinging effects in spacetime
Author: Gueron, E
Maia, CAS
Matsas, GEA
Abstract: Wisdom has recently unveiled a new relativistic effect, called "spacetime swimming", where quasirigid free bodies in curved spacetimes can "speed up", "slow down" or "deviate" their falls by performing local cyclic shape deformations. We show here that for fast enough cycles this effect dominates over a nonrelativistic related one, named here "space swinging", where the fall is altered through nonlocal cyclic deformations in Newtonian gravitational fields. We expect, therefore, to clarify the distinction between both effects leaving no room to controversy. Moreover, the leading contribution to the swimming effect predicted by Wisdom is enriched with a higher order term and the whole result is generalized to be applicable in cases where the tripod is in large redshift regions.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevD.73.024020
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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