Generalized Higgs inflation

Kohei Kamada, Tsutomu Kobayashi, Tomo Takahashi, Masahide Yamaguchi, and Jun’ichi Yokoyama
Phys. Rev. D 86, 023504 – Published 3 July 2012

Abstract

We study Higgs inflation in the context of generalized G-inflation, i.e., the most general single-field inflation model with second-order field equations. The four variants of Higgs inflation proposed so far in the literature can be accommodated at one time in our framework. We also propose yet another class of Higgs inflation, the running Einstein inflation model, that can naturally arise from the generalized G-inflation framework. As a result, five Higgs inflation models in all should be discussed on an equal footing. Concise formulas for primordial fluctuations in these generalized Higgs inflation models are provided, which will be helpful to determine which model is favored from the future experiments and observations such as the Large Hadron Collider and the Planck satellite.

  • Received 3 April 2012

DOI:https://doi.org/10.1103/PhysRevD.86.023504

© 2012 American Physical Society

Authors & Affiliations

Kohei Kamada1,†, Tsutomu Kobayashi2,3,*,‡, Tomo Takahashi4,§, Masahide Yamaguchi5,∥, and Jun’ichi Yokoyama6,7,¶

  • 1Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, D-22607 Hamburg, Germany
  • 2Hakubi Center, Kyoto University, Kyoto 606-8302, Japan
  • 3Department of Physics, Kyoto University, Kyoto 606-8502, Japan
  • 4Department of Physics, Saga University, Saga 840-8502, Japan
  • 5Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
  • 6Research Center for the Early Universe (RESCEU), Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
  • 7Kavli Institute for the Physics and Mathematics of the Universe (IPMU), The University of Tokyo, Kashiwa, Chiba, 277-8568, Japan

  • *Present address: Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan.
  • kohei.kamada@desy.de
  • tsutomu@tap.scphys.kyoto-u.ac.jp
  • §tomot@cc.saga-u.ac.jp
  • gucci@phys.titech.ac.jp
  • yokoyama@resceu.s.u-tokyo.ac.jp

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Issue

Vol. 86, Iss. 2 — 15 July 2012

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