Time Travel and Consistency Constraints.
The possibility of time travel, as permitted in General Relativity, is responsible for constraining physical fields beyond what laws of nature would otherwise require. In the special case where time travel is limited to a single object returning to the past and interacting with itself, consistency c...
| Publicado en: | Philosophy of Science Vol. 70; no. 5; pp. 1098 - 1114 |
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| Formato: | Artículo |
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Cambridge University Press
Dec2003
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=12413898&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 12413898 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00318248 PSC jtl: Philosophy of Science issn: 00318248 maglogo: N pubinfo: dt: Dec2003 vid: 70 iid: 5 pid: 15979 pub: Cambridge University Press artinfo: ui: 12413898 10.1086/377392 ppf: 1098 ppct: 16 formats: fmt: @attributes: type: P size: 309KB tig: atl: Time Travel and Consistency Constraints. aug: au: Kutach, Douglas N. su: Time travel Physical sciences General relativity (Physics) Hypergeometric series Homotopy theory Topology sug: subj: Time travel Physical sciences General relativity (Physics) Hypergeometric series Homotopy theory Topology ab: The possibility of time travel, as permitted in General Relativity, is responsible for constraining physical fields beyond what laws of nature would otherwise require. In the special case where time travel is limited to a single object returning to the past and interacting with itself, consistency constraints can be avoided if the dynamics is continuous and the object's state space satisfies a certain topological requirement: that all null-homotopic mappings from the state-space to itself have some fixed point. Where consistency constraints do exist, no new physics is needed to enforce them. One needs only to accept certain global topological constraints as laws, something that is reasonable in any case. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Copyright of Philosophy of Science is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Philosophy of Science holder: Cambridge University Press dt: @attributes: year: 2003 holdings: @attributes: islocal: N |
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