Holographic constraint and effective field theories with N-species

Details Holographic constraint and effective field theories with N-species Holographic constraint and effective field theories with N-species

2009-11-26

arxiv.org/abs/0911.5045v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, version to appear in JHEP

Scientific paper

Effective field theories that manifest UV/IR mode mixing in such a way as to be valid for arbitrarily large volumes, can be used for gravitational, non-black hole events to be accounted for. In formulating such theories with a large number of particle species $N$, we employ constraints from the muon $g-2$, higher-dimensional operator corrections due to the required UV and IR cutoffs as well as the RG evolution in a conventional field-theoretical model in curved space. While in general our bounds on $N$ do reflect $N \simeq 10^{32}$, a bound motivated by the solution to the hierarchy problem in alike theories and obtained by the fact that strong gravity has not been seen in the particle collisions, the bound from the muon $g-2$ turns out to be much stronger, $N \lsim 10^{19}$. For systems on the verge of gravitational collapse, this bound on $N$ is far too restrictive to allow populating a large gap in entropy between those systems and that of black holes of the same size.

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