TY - GEN
T1 - Erice lecture on microscopic gravity
AU - Dvali, Gia
PY - 2012
Y1 - 2012
N2 - In this lecture we review a fundamental connection between the number of particle species and the nature of gravitational interaction at the shortest length-scales. The key role in establishing this connection is played by the well-understood properties of macroscopic black holes, combined with effective field-theoretic approach to gravity. One universal outcome is, that the existence of particle species in low energy theory inevitably replaces the Planck length by a longer fundamental scale. Application of this phenomenon for the solution to the Hierarchy Problem fixes the number of species at 10 32.
AB - In this lecture we review a fundamental connection between the number of particle species and the nature of gravitational interaction at the shortest length-scales. The key role in establishing this connection is played by the well-understood properties of macroscopic black holes, combined with effective field-theoretic approach to gravity. One universal outcome is, that the existence of particle species in low energy theory inevitably replaces the Planck length by a longer fundamental scale. Application of this phenomenon for the solution to the Hierarchy Problem fixes the number of species at 10 32.
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M3 - Conference contribution
AN - SCOPUS:84892650043
SN - 9814374113
SN - 9789814374118
T3 - Subnuclear Series - Proceedings of the International School of Subnuclear Physics
SP - 59
EP - 81
BT - Proceedings of the International School of Subnuclear Physics
T2 - 47th International School of Subnuclear Physics: The Most Unexpected at LHC and the Status of High Energy Frontier
Y2 - 29 August 2009 through 7 September 2009
ER -