1. Weighing the vacuum energy.
- Author
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Alvarez, Enrique, Anero, Jesus, and Santos-Garcia, Raquel
- Subjects
- *
CURVED spacetime , *GENERAL relativity (Physics) , *SCALAR field theory , *DIFFEOMORPHISMS , *QUANTUM gravity , *GRAVITY - Abstract
We discuss the weight of vacuum energy in various contexts. First, we compute the vacuum energy for flat spacetimes of the form T³×R, where T³ stands for a general 3-torus. We discover a quite simple relationship between energy at radius R and energy at radius l2/R. Then we consider quantum gravity effects in the vacuum energy of a scalar field in M 3×S¹ where M 3 is a general curved spacetime, and the circle S 1 refers to a spacelike coordinate. We compute it for general relativity and generic transverse diffeomorphisms theories. In the particular case of unimodular gravity vacuum energy does not gravitate. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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