Explaining unification in physics internally

Salimkhani, Kian

doi:10.1007/s11229-019-02436-x

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…How might this be solved? As I have recently argued in Salimkhani (2019), unification might be a way out. If we understand unification as a result of science rather than an imposition on (or aim of) science, we may hope that a physical theory of sufficiently large scope will prefer one ontology over the other.…”

Section: Conclusion and Critical Remarksmentioning

confidence: 97%

The dynamical approach to spin-2 gravity

Salimkhani

2020

Studies in History and Philosophy of Science Part B: Studies in

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This paper engages with the following closely related questions that have recently received some attention in the literature: (a) what is the status of the equivalence principle in general relativity (GR)?; (b) how does the metric field obtain its property of being able to act as a metric?; and (c) is the metric of GR derivative on the dynamics of the matter fields? The paper attempts to complement these debates by studying the spin-2 approach to (quantum) gravity. In particular, the paper argues that three lessons can be drawn from the spin-2 approach: (1) different from what is sometimes claimed in the literature, central aspects of the non-linear theory of GR are already derivable in classical spin-2 theory; in particular, 'universal coupling' can be considered a derived 'theorem' in both the classical and the quantum spin-2 approach; this provides new insights for the investigation of the equivalence principle; (2) the 'second miracle' that Read et al. argue characterises GR is explained in the classical as well as in the quantum version of the spin-2 approach; (3) the spin-2 approach allows for an ontological reduction of the metrical part of spacetime to the dynamics of matter fields.

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Section: Conclusion and Critical Remarksmentioning

confidence: 97%

The dynamical approach to spin-2 gravity

Salimkhani

2020

Studies in History and Philosophy of Science Part B: Studies in

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“…66 Unification as a guiding principle for instance has both physical and metaphysical strands. For a discussion, see Salimkhani (2018).…”

Section: = Cft As a Guiding Principle To Quantum Gravitymentioning

confidence: 99%

Holography without holography: How to turn inter-representational into intra-theoretical relations in AdS/CFT

Jaksland

Linnemann

2020

Studies in History and Philosophy of Science Part B: Studies in

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We show by means of the AdS/CFT correspondence in the context of quantum gravity how inter-representational relations-loosely speaking relations among different equivalent representations of one and the same physics-can play out as a tool for intra-theoretical developments and thus boost theory development in the context of discovery. More precisely, we first show that, as a duality, the AdS/CFT correspondence cannot in itself testify to the quantum origin of gravity (though it may be utilized for this purpose). We then establish through two case studies from emergent gravity (Jacobson (2016), Verlinde (2017)) that the holographic AdS/CFT correspondence can, however, still excel as a guiding principle towards the quantum origin of gravity (similar in nature to quantisation).

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Explaining unification in physics internally

Cited by 2 publications

References 30 publications

The dynamical approach to spin-2 gravity

The dynamical approach to spin-2 gravity

Holography without holography: How to turn inter-representational into intra-theoretical relations in AdS/CFT

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