Scales of gravity

By G. Dvali, G. Gabadadze, M. Kolanović, Francesco Nitti. 2001

166 citations recorded by the source corpus.

We propose a framework in which the quantum gravity scale can be as low as $10^{-3}$ eV. The key assumption is that the Standard Model ultraviolet cutoff is much higher than the quantum gravity scale. This ensures that we observe conventional weak gravity. We construct an explicit brane-world model in which the brane-localized Standard Model is coupled to strong 5D gravity of infinite-volume flat extra space. Due to the high ultraviolet scale, the Standard Model fields generate a large graviton kinetic term on the brane. This kinetic term ``shields'' the Standard Model from the strong bulk gravity. As a result, an observer on the brane sees weak 4D gravity up to astronomically large distances beyond which gravity becomes five-dimensional. Modeling quantum gravity above its scale by the closed string spectrum we show that the shielding phenomenon protects the Standard Model from an apparent phenomenological catastrophe due to the exponentially large number of light string states. The collider experiments, astrophysics, cosmology and gravity measurements {\it independently} point to the same lower bound on the quantum gravity scale, $10^{-3}$ eV. For this value the model has experimental signatures both for colliders and for sub-millimeter gravity measurements. Black holes reveal certain interesting properties in this framework.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/9a83c1713bf77043e9c849fd0c53d11f4ce10292

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. César Gómez
2. Kurt Hinterbichler
3. Claudia de Rham
4. G. Dvali
5. A. Lue
6. E. Kiritsis
7. A. Kehagias
8. G. Giudice

In Nuclear and High Energy Physics

1. César Gómez
2. Kurt Hinterbichler
3. Claudia de Rham
4. G. Dvali
5. A. Lue
6. E. Kiritsis
7. A. Kehagias
8. G. Giudice

In Statistical and Nonlinear Physics

1. César Gómez
2. G. Dvali
3. Kurt Hinterbichler
4. E. Kiritsis
5. A. Lue
6. G. Giudice
7. A. Kehagias
8. Claudia de Rham

Citations in the corpus

• Theoretical Aspects of Massive Gravity (2011, background): “69) is known as a resonance mass, or soft mass [178, 179, 180, 181, 182, 183, 184, 134, 52, 55].”
• The Swampland: Introduction and Review (2019, unknown): “The formulation of the scale presented above, is more closely related to [16–21], though we will see in section 3.”
• The phenomenology of Dvali–Gabadadze–Porrati cosmologies (2005, background): “We follow here the approach of Deffayet [23] who first noted how one recovers a selfaccelerating solution from the DGP field equations Eqs.”
• UV-completion by classicalization (2010, background): “However, the situation could be very different if gravity becomes strong at the TeV scale [23], since black holes could be formed in proton collisions at the LHC [24–28].”
• D‐branes in Standard Model building, gravity and cosmology (2003, background): “Obviously the cross-over scale has to be larger than the observable size of the universe or it has to be combined with one of the mechanisms described above [185, 172].”