1. Four-form field versus fundamental scalar field
- Author
-
M. Savelainen
- Subjects
Physics ,ta114 ,Physics and Astronomy (miscellaneous) ,Field (physics) ,010308 nuclear & particles physics ,Scalar (mathematics) ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Cosmological constant ,01 natural sciences ,General Relativity and Quantum Cosmology ,Action (physics) ,Vacuum energy ,0103 physical sciences ,Minkowski space ,Stress–energy tensor ,010306 general physics ,Scalar field ,Mathematical physics - Abstract
A modified-gravity theory with a four-form field strength $F$, a variable gravitational coupling parameter $G(F)$, and a standard matter action is considered here. Maxwell and Einstein equations are now derived when including to action also derivates of $F$. The energy momentum tensor of the 4-form field contains both the part, which is typical for the fundamental (pseudo)scalar, and the part, which cancels the divergent contribution of the zero-point energies of quantum fields to the vacuum energy and thus leads to the natural nullification of the cosmological constant in Minkowski vacuum., 14 pages
- Published
- 2017
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