title: Solving the Hierarchy Problem at Reheating with a Large Number of Degrees of Freedom.
abstract: We present a new solution to the electroweak hierarchy problem. We introduce N copies of the standard model with varying values of the Higgs mass parameter. This generically yields a sector whose weak scale is parametrically removed from the cutoff by a factor of 1/sqrt[N]. Ensuring that reheating deposits a majority of the total energy density into this lightest sector requires a modification of the standard cosmological history, providing a powerful probe of the mechanism. Current and near-future experiments can explore much of the natural parameter space. Furthermore, supersymmetric completions that preserve grand unification predict superpartners with mass below m_{W}M_{pl}/M_{GUT}∼10  TeV.
authors.affiliation: School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540, USA.
authors.forename: Nima
authors.initials: N
authors.lastname: Arkani-Hamed
authors.affiliation: Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403, USA.
authors.forename: Timothy
authors.initials: T
authors.lastname: Cohen
authors.affiliation: School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540, USA.
authors.forename: Raffaele Tito
authors.initials: RT
authors.lastname: D'Agnolo
authors.affiliation: Stanford Institute for Theoretical Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: Anson
authors.initials: A
authors.lastname: Hook
authors.affiliation: Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747, Korea.
authors.forename: Hyung Do
authors.initials: HD
authors.lastname: Kim
authors.affiliation: Princeton Center for Theoretical Science, Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: David
authors.initials: D
authors.lastname: Pinner