Causal faster-than-light travel from a localized second time coordinate

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dc.contributor.authorNastase, Horatiu [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T16:47:44Z
dc.date.available2019-10-06T16:47:44Z
dc.date.issued2019-08-26
dc.description.abstractI present a general relativistic model with a compactified second time coordinate that a priori allows for causal, yet faster than light travel in the background of a Friedmann-Lemaître-Robertson-Walker geometry, by local modification of a higher dimensional background geometry, specifically with respect to the radius of the compactified time coordinate. The modification can be induced via the fields of the model. I show that one cannot convert (as possible in special relativistic models, or simple general relativistic models) the superluminality into closed timelike loops violating causality, due to a novel combination of factors, at least for vmax≤2. The physics of the second time is constrained by postulates derived from reasonable physical assumptions. I comment on the possibility of experimental implications of the model.en
dc.description.affiliationInstituto de Física Teórica UNESP-Universidade Estadual Paulista, R. Dr. Bento T. Ferraz 271, Bl. II
dc.description.affiliationUnespInstituto de Física Teórica UNESP-Universidade Estadual Paulista, R. Dr. Bento T. Ferraz 271, Bl. II
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.100.045021
dc.identifier.citationPhysical Review D, v. 100, n. 4, 2019.
dc.identifier.doi10.1103/PhysRevD.100.045021
dc.identifier.issn2470-0029
dc.identifier.issn2470-0010
dc.identifier.scopus2-s2.0-85072216819
dc.identifier.urihttp://hdl.handle.net/11449/189656
dc.language.isoeng
dc.relation.ispartofPhysical Review D
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.titleCausal faster-than-light travel from a localized second time coordinateen
dc.typeArtigo

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