2020/03/09 by Daniel Sobral-Blanco, Daniel Sobral Blanco, Lucas Lombriser · 13 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Classical mechanics #Cosmological constant #Cosmological constant problem #Cosmology #Cosmology and Gravitation Theories #Dark energy #Lambda-CDM model #Observable #Physics #Planck #Pulsars and Gravitational Waves Research #Quantum mechanics #Scalar (mathematics) #Scalar field #Theoretical physics #Vacuum energy #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.102.043506
published in Physical review. D/Physical review. D. 102(4) (American Physical Society) · 14 pages
arxiv created 2020/03/09 · openalex created_date 2020/03/13 · openalex publication_date 2020/08/05 · arxiv updated 2020/08/12 · openalex updated_date 2026/08/05
Recently the global variation of the Planck mass in the general relativistic Einstein-Hilbert action was proposed as a self-tuning mechanism of the cosmological constant preventing vacuum energy from freely gravitating. We show that this global mechanism emerges for generic local scalar-tensor theories with additional coupling of the scalar field to the field strength of a three-form gauge field that turns the scalar field constant on the domain of the action. Evaluation of the resulting integral constraint equation over the observable Universe yields a self-consistent framework with general relativistic field equations and arbitrary radiatively stable residual cosmological constant. We argue that the expectation value for this residual is in good agreement with the magnitude of the observed cosmic acceleration.