Accelerating Expansion: Philosophy and Physics with a Positive Cosmological Constant

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Prof Gordon Belot (Lawrence Sklar Collegiate Professor of Philosophy, Lawrence Sklar Collegiate Professor of Philosophy, University of Michigan)

Accelerating Expansion

Philosophy and Physics with a Positive Cosmological Constant

Prof Gordon Belot (Lawrence Sklar Collegiate Professor of Philosophy, Lawrence Sklar Collegiate Professor of Philosophy, University of Michigan)

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English

Oxford University Press
24 August 2023

Philosophy: logic; Philosophy of science; Cosmology & the universe; Relativity physics

Accelerating Expansion explores some of the philosophical implications of modern cosmology, focused on the significance that the discovery of the accelerating expansion of the Universe has for our understanding of time, geometry, and physics. The appearance of the cosmological constant in the equations of general relativity allows one to model universes in which space has an inherent tendency towards expansion. This constant, introduced by Einstein but subsequently abandoned by him, returned to centre stage with the discovery of the accelerating expansion. This pedagogically-oriented essay begins with a study of the most basic and elegant relativistic world that involves a positive cosmological constant, de Sitter spacetime. It then turns to the relatives of de Sitter spacetime that dominate modern relativistic cosmology. Some of the topics considered include: the nature of time and simultaneity in de Sitter worlds; the sense in which de Sitter spacetime is a powerful dynamical attractor; the limited extent to which observation can give us information about the topology of space in a world undergoing accelerated expansion; and cosmologists' favourite sceptical worry about the reliability of evidence and the possibility of knowledge, the problem of Boltzmann brains.

By: Prof Gordon Belot (Lawrence Sklar Collegiate Professor of Philosophy Lawrence Sklar Collegiate Professor of Philosophy University of Michigan)
Imprint: Oxford University Press
Country of Publication: United Kingdom
Dimensions: Height: 223mm, Width: 145mm, Spine: 18mm
Weight: 422g
ISBN: 9780192866462
ISBN 10: 019286646X
Pages: 240
Publication Date: 24 August 2023
Audience: Professional and scholarly , Undergraduate
Format: Hardback
Publisher's Status: Active

i: Our Hero ii: Let the Good Times Roll iii: Symmetry and Curvature iv: Elliptic de Sitter Spacetime v: The Anti-Hero vi: Asymptotically de Sitter Spacetimes vii: Stability, Instability, and Hair viii: Cosmic Topology ix: Brains!

Gordon Belot studied at the University of Toronto, Cambridge University, and the University of Pittsburgh. He has taught at Princeton University, New York University, the University of Pittsburgh, and the University of Michigan, where he is currently the Lawrence Sklar Collegiate Professor of Philosophy. His book Geometric Possibility won the Lakatos Award. He has held fellowships from the Social Sciences and Humanities Research Council, the National Science Foundation, the American Council of Learned Societies, and the Center for Advanced Study in the Behavioral Sciences, and is a fellow of the American Association for the Advancement of Science.