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Empty space and the (positive) cosmological constant

Schneider, Mike D. (2022) Empty space and the (positive) cosmological constant. [Preprint]

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Abstract

I discuss empty space, as it appears in the physical foundations of relativistic field theories and in the semiclassical study of isolated systems. Of particular interest is the relationship between empirical measurements of the cosmological constant and the question of appropriate representation of empty space by spacetimes, or models of general relativity. Also considered is a speculative move that shows up in one corner of quantum gravity research. In pursuit of holographic quantum cosmology given a positive cosmological constant, there is evidently some freedom available for theoretical physicists to pick between two physically inequivalent spacetime representations of empty space, moving forward: de Sitter spacetime or its `elliptic' cousin.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Schneider, Mike D.schneider.michael.d@gmail.com
Keywords: cosmological constant; de Sitter spacetime; asymptotic spacetime structure; speculation in science; holographic quantum cosmology
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Fields and Particles
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Physics > Relativity Theory
General Issues > Theory Change
Depositing User: Mike D. Schneider
Date Deposited: 20 Aug 2022 11:06
Last Modified: 20 Aug 2022 11:06
Item ID: 21076
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Fields and Particles
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Physics > Relativity Theory
General Issues > Theory Change
Date: August 2022
URI: http://philsci-archive.pitt.edu/id/eprint/21076

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