TY - JOUR

T1 - Renormalization group improved Higgs inflation with a running kinetic term

AU - Takahashi, Fuminobu

AU - Takahashi, Ryo

N1 - Funding Information:
This work was supported by the Grant-in-Aid for Scientific Research on Scientific Research A (No. 26247042 [FT]), Scientific Research B (No. 26287039 [FT]), Young Scientists B (No. 24740135 [FT]) and Innovative Areas (No. 23104008 and No. 15H05889 [FT]). This work was supported by World Premier International Research Center Initiative (WPI Initiative), MEXT , Japan.
Publisher Copyright:
© 2016 The Authors

PY - 2016/9/10

Y1 - 2016/9/10

N2 - We study a Higgs inflation model with a running kinetic term, taking account of the renormalization group evolution of relevant coupling constants. Specifically we study two types of the running kinetic Higgs inflation, where the inflaton potential is given by the quadratic or linear term potential in a frame where the Higgs field is canonically normalized. We solve the renormalization group equations at two-loop level and calculate the scalar spectral index and the tensor-to-scalar ratio. We find that, even if the renormalization group effects are included, the quadratic inflation is ruled out by the CMB observations, while the linear one is still allowed.

AB - We study a Higgs inflation model with a running kinetic term, taking account of the renormalization group evolution of relevant coupling constants. Specifically we study two types of the running kinetic Higgs inflation, where the inflaton potential is given by the quadratic or linear term potential in a frame where the Higgs field is canonically normalized. We solve the renormalization group equations at two-loop level and calculate the scalar spectral index and the tensor-to-scalar ratio. We find that, even if the renormalization group effects are included, the quadratic inflation is ruled out by the CMB observations, while the linear one is still allowed.

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U2 - 10.1016/j.physletb.2016.07.009

DO - 10.1016/j.physletb.2016.07.009

M3 - Article

AN - SCOPUS:84989947554

VL - 760

SP - 329

EP - 334

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -