Fundamental Aspects of Asymptotic Safety in Quantum Gravity / Zoë H. Slade

By:

Slade, Zoë H [VerfasserIn]

Resource type: Ressourcentyp: Buch (Online)Book (Online)Language: English Series: Springer Theses Recognizing Outstanding Ph.D. Research | Springer Theses, Recognizing Outstanding Ph.D. Research | Springer eBooks Physics and AstronomyPublisher: Cham : Springer, [2019]Copyright date: © 2019Description: 1 Online-Ressource (XIII, 134 Seiten) : Illustrationen, DiagrammeISBN:

9783030195076

Subject(s):

Genre/Form:

Hochschulschrift

Additional physical formats: 9783030195069 | Erscheint auch als: 978-3-030-19506-9 Druck-AusgabeMSC: MSC: *83-02 | 83C45 | 81V17LOC classification:

QC178 QC173.5-173.65

DOI: DOI: 10.1007/978-3-030-19507-6Online resources:

Dissertation note: Dissertation - University of Southampton Summary: Introduction -- Solutions to the reconstruction problem -- Background independence in a background dependent RG -- Asymptotic solutions in asymptotic safety -- OutlookSummary: After an extensive introduction to the asymptotic safety approach to quantum gravity, this thesis explains recent key advances reported in four influential papers. Firstly, two exact solutions to the reconstruction problem (how to recover a bare action from the effective average action) are provided. Secondly, the fundamental requirement of background independence in quantum gravity is successfully implemented. Working within the derivative expansion of conformally reduced gravity, the notion of compatibility is developed, uncovering the underlying reasons for background dependence generically forbidding fixed points in such models. Thirdly, in order to understand the true nature of fixed-point solutions, one needs to study their asymptotic behaviour. The author carefully explains how to find the asymptotic form of fixed point solutions within the f(R) approximation. Finally, the key findings are summarised and useful extensions of the work are identified. The thesis finishes by considering the need to incorporate matter into the formalism in a compatible way and touches upon potential opportunities to test asymptotic safety in the futurePPN: PPN: 1671009886Package identifier: Produktsigel: ZDB-2-PHA | ZDB-2-SEB | ZDB-2-SXP

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