Exploring the self-tuning of the cosmological constant from Planck mass variation

@article{Blanco2020ExploringTS,
  title={Exploring the self-tuning of the cosmological constant from Planck mass variation},
  author={Daniel Sobral Blanco and Lucas Lombriser},
  journal={Classical and Quantum Gravity},
  year={2020},
  volume={38}
}
Recently, the variation of the Planck mass in the general relativistic Einstein–Hilbert action was proposed as a self-tuning mechanism of the cosmological constant, preventing standard model vacuum energy from freely gravitating and enabling an estimation of the magnitude of its observed value. We explore here new aspects of this proposal. We first develop an equivalent Einstein-frame formalism to the current Jordan-frame formulation of the mechanism and use this to highlight similarities and… 
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References

SHOWING 1-10 OF 90 REFERENCES
Vacuum Energy Sequestering and Graviton Loops.
TLDR
This work adapts the local vacuum energy sequestering mechanism to also cancel all the vacuum energy loops involving virtual gravitons, in addition to the vacuumEnergy generated by matter fields alone.
On the cosmological constant problem
The cosmological constant problem Rev
  • Mod. Phys
  • 1989
and L
  • Lombriser, Horndeski theories and beyond from higher dimensions
  • 2020
Horndeski theories and beyond from higher dimensions
The Einstein–Hilbert action with a cosmological constant is the most general local four-dimensional action leading to second-order derivative equations of motion that are symmetric and divergence
Local self-tuning mechanism for the cosmological constant
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
Manifestly Local Theory of Vacuum Energy Sequestering.
We present a manifestly local, diffeomorphism invariant, and locally Poincaré invariant formulation of vacuum energy sequestering. In this theory, quantum vacuum energy generated by matter loops is
Sequestering the standard model vacuum energy.
We propose a very simple reformulation of general relativity, which completely sequesters from gravity all of the vacuum energy from a matter sector, including all loop corrections and renders all
Late-time acceleration by a residual cosmological constant from sequestering vacuum energy in ultimate collapsed structures
  • L. Lombriser
  • Physics
    Journal of Cosmology and Astroparticle Physics
  • 2019
The sequestering mechanism has been proposed as a remedy to the old cosmological constant problem of the non-gravitating vacuum energy in the matter sector. Here it is shown that an extension of this
...
...