Black hole bound on the number of species and quantum gravity at CERN LHC

By G. Dvali, M. Redi. 2007

318 citations recorded by the source corpus.

In theories with a large number N of particle species, black hole physics imposes an upper bound on the mass of the species equal to M-Planck/root N. This bound suggests a novel solution to the hierarchy problem in which there are N approximate to 10(32) gravitationally coupled species, for example 10(32) copies of the standard model. The black hole bound forces them to be at the weak scale, hence providing a stable hierarchy. We present various arguments, that in such theories the effective gravitational cutoff is reduced to Lambda(G)approximate to M-Planck/root N and a new description is needed around this scale. In particular, black holes smaller than Lambda(-1)(G) are already no longer semiclassical. The nature of the completion is model dependent. One natural possibility is that Lambda(G) is the quantum gravity scale. We provide evidence that within this type of scenarios, contrary to the standard intuition, micro-black-holes have a (slowly fading) memory of the species of origin. Consequently, the black holes produced at LHC will predominantly decay into the standard model particles, and negligibly into the other species.

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

View Paper: https://www.semanticscholar.org/paper/e10614b49a0d14dc0cc273e700503cbd46bc2e22

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

In Nuclear and High Energy Physics

In Statistical and Nonlinear Physics

Citations in the corpus

Lectures on the Swampland Program in String Compactifications (2021, background): “The same species bound has been motivated using non-perturbative arguments based on black hole physics [36,37].”
Evidence for a sublattice weak gravity conjecture (2016, background): “1 of [47]).”
Entanglement Entropy of Black Holes (2011, background): “Thus, as was noted in [77], [79], the relation (327) is a particular example of relation (326) in which N should be understood as the number of the KK species.”
Quantum compositeness of gravity: black holes, AdS and inflation (2013, background): “In this respect, the situation with the de Sitter limit is similar to the depletion of black holes in the presence of large number of massless particle species [30, 31].”
Quantum extremal islands made easy. Part I. Entanglement on the brane (2020, background): “While the above are UV effects, there are also IR effects resulting from having a large number of matter degrees of freedom propagating on the brane, as explained in [84–86].”