Journal of High Energy Physics

, 2019:189 | Cite as

Gravitational production of super-Hubble-mass particles: an analytic approach

  • Daniel J. H. Chung
  • Edward W. Kolb
  • Andrew J. LongEmail author
Open Access
Regular Article - Theoretical Physics


Through a mechanism similar to perturbative particle scattering, particles of mass mχ larger than the Hubble expansion rate Hinf during inflation can be gravitationally produced at the end of inflation without the exponential suppression powers of exp(−mχ/Hinf ). Here we develop an analytic formalism for computing particle production for such massive particles. We apply our formalism to specific models that have been previously been studied only numerically, and we find that our analytical approximations reproduce those numerical estimates well.


Cosmology of Theories beyond the SM Space-Time Symmetries 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2019

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of Wisconsin-MadisonMadisonU.S.A.
  2. 2.Kavli Institute for Cosmological Physics and Enrico Fermi InstituteUniversity of ChicagoChicagoU.S.A.
  3. 3.Leinweber Center for Theoretical PhysicsUniversity of MichiganAnn ArborU.S.A.

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