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Updated: Jul 27, 2025

Development of an Experimental Setup for the Measurement of the Coefficient of Restitution under Vacuum Conditions
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Empty space and the (positive) cosmological constant.

Mike D Schneider1

  • 1Department of Philosophy, University of Missouri, MO, USA.

Studies in History and Philosophy of Science
|June 10, 2023
PubMed
Summary
This summary is machine-generated.

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Researchers explore empty space in physics, linking cosmological constant measurements to spacetime representations in general relativity. Quantum gravity research considers de Sitter spacetime versus its

Area of Science:

  • Theoretical Physics
  • Cosmology
  • General Relativity

Background:

  • Foundations of relativistic field theories and semiclassical studies of isolated systems.
  • The role of empty space in physical theories.
  • Empirical measurements of the cosmological constant.

Purpose of the Study:

  • To examine the representation of empty space in relativistic field theories and general relativity.
  • To investigate the connection between cosmological constant measurements and spacetime models.
  • To explore choices in spacetime representations within quantum gravity research.

Main Methods:

  • Analysis of physical foundations of relativistic field theories.
  • Semiclassical study of isolated systems.

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  • Examination of general relativity models and spacetime representations.

    • Main Results:

    • The cosmological constant's empirical measurements influence the choice of spacetime representations for empty space.
    • In holographic quantum cosmology with a positive cosmological constant, two inequivalent spacetimes (de Sitter and its elliptic cousin) are viable.
    • A speculative move in quantum gravity research offers freedom in selecting these representations.

    Conclusions:

    • The choice of spacetime representation for empty space is critical in relativistic theories and quantum gravity.
    • Understanding empty space representations is key to interpreting cosmological constant data.
    • Future research in quantum cosmology may involve selecting between de Sitter spacetime and its elliptic counterpart.