The multiple realizability of general relativity in quantum gravity.
Must a theory of quantum gravity have some truth to it if it can recover general relativity in some limit of the theory? This paper answers this question in the negative by indicating that general relativity is multiply realizable in quantum gravity. The argument is inspired by spacetime functionali...
| Publicado en: | Synthese Vol. 199; no. 2; pp. 441 - 468 |
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| Formato: | Artículo |
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Springer Nature
Dec2021 Supplement 2
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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=153929229&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 153929229 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00397857 4LI jtl: Synthese issn: 00397857 maglogo: N pubinfo: dt: Dec2021 Supplement 2 vid: 199 iid: 2 pid: 237 pub: Springer Nature artinfo: ui: 153929229 10.1007/s11229-019-02382-8 ppf: 441 ppct: 27 formats: fmt: @attributes: type: P size: 500KB tig: atl: The multiple realizability of general relativity in quantum gravity. aug: au: Jaksland, Rasmus affil: Department of Philosophy and Religious Studies, NTNU – Norwegian University of Science and Technology, Trondheim, Norway su: Quantum gravity Einstein field equations General relativity (Physics) Quantum theory Gravity Spacetime sug: subj: Quantum gravity Einstein field equations General relativity (Physics) Quantum theory Gravity Spacetime keyword: Emergent gravity Entanglement General relativity Multiple realizability Spacetime functionalism String theory ab: Must a theory of quantum gravity have some truth to it if it can recover general relativity in some limit of the theory? This paper answers this question in the negative by indicating that general relativity is multiply realizable in quantum gravity. The argument is inspired by spacetime functionalism—multiple realizability being a central tenet of functionalism—and proceeds via three case studies: induced gravity, thermodynamic gravity, and entanglement gravity. In these, general relativity in the form of the Einstein field equations can be recovered from elements that are either manifestly multiply realizable or at least of the generic nature that is suggestive of functions. If general relativity, as argued here, can inherit this multiple realizability, then a theory of quantum gravity can recover general relativity while being completely wrong about the posited microstructure. As a consequence, the recovery of general relativity cannot serve as the ultimate arbiter that decides which theory of quantum gravity that is worthy of pursuit, even though it is of course not irrelevant either qua quantum gravity. Thus, the recovery of general relativity in string theory, for instance, does not guarantee that the stringy account of the world is on the right track; despite sentiments to the contrary among string theorists. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Synthese is a copyright of Springer, 2021. All Rights Reserved. item: Synthese holder: Springer Nature dt: @attributes: year: 2021 holdings: @attributes: islocal: N |
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