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Naturally minute quantum correction to the cosmological constant descended from the hierarchy
- Source :
- Physical Review D. 82
- Publication Year :
- 2010
- Publisher :
- American Physical Society (APS), 2010.
-
Abstract
- We demonstrate that an extremely small but positive quantum correction, or the Casimir energy, to the cosmological constant can arise from a massive bulk fermion field in the Randall-Sundrum model. Specifically, a cosmological constant doubly descended from the Planck-electroweak hierarchy and as minute as the observed dark energy scale can be naturally achieved without fine-tuning of the bulk fermion mass. To ensure the stabilization of the system, we discuss two stabilization mechanisms under this setup. It is found that the Goldberger-Wise mechanism can be successfully introduced in the presence of a massive bulk fermion, without spoiling the smallness of the quantum correction.<br />5 pages
- Subjects :
- High Energy Physics - Theory
Physics
Nuclear and High Energy Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
FOS: Physical sciences
Zero-point energy
Cosmological constant
Fermion
Casimir effect
Thermodynamics of the universe
High Energy Physics - Theory (hep-th)
Vacuum energy
Randall–Sundrum model
Quantum electrodynamics
Quantum mechanics
Dark energy
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- ISSN :
- 15502368 and 15507998
- Volume :
- 82
- Database :
- OpenAIRE
- Journal :
- Physical Review D
- Accession number :
- edsair.doi.dedup.....85a9af270f9fbf526b940e728f6378d8