TY - JOUR
T1 - Topological higgs inflation
T2 - Origin of standard model criticality
AU - Hamada, Yuta
AU - Oda, Kin Ya
AU - Takahashi, Fuminobu
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/11/21
Y1 - 2014/11/21
N2 - The measured values of the Higgs and top masses and of the strong gauge coupling constant point to the near-criticality of the Standard Model, where two vacua at the electroweak and Planck scales are quasidegenerate. We argue that the criticality is required by the occurrence of an eternal topological inflation induced by the Higgs potential. The role of this inflation is to continuously create a sufficiently flat and homogeneous Universe, providing the necessary initial condition for the subsequent slow-roll inflation that generates the density perturbations of the right magnitude. While the condition for the topological Higgs inflation is only marginally satisfied in the Standard Model, it can be readily satisfied if one introduces the right-handed neutrinos and/or the nonminimal coupling to gravity; currently unknown quantum gravity corrections to the potential may also help. We also discuss the B-L Higgs inflation as a possible origin of the observed density perturbations. Its necessary initial condition, the restored B-L symmetry, can be naturally realized by the preceding topological Higgs inflation.
AB - The measured values of the Higgs and top masses and of the strong gauge coupling constant point to the near-criticality of the Standard Model, where two vacua at the electroweak and Planck scales are quasidegenerate. We argue that the criticality is required by the occurrence of an eternal topological inflation induced by the Higgs potential. The role of this inflation is to continuously create a sufficiently flat and homogeneous Universe, providing the necessary initial condition for the subsequent slow-roll inflation that generates the density perturbations of the right magnitude. While the condition for the topological Higgs inflation is only marginally satisfied in the Standard Model, it can be readily satisfied if one introduces the right-handed neutrinos and/or the nonminimal coupling to gravity; currently unknown quantum gravity corrections to the potential may also help. We also discuss the B-L Higgs inflation as a possible origin of the observed density perturbations. Its necessary initial condition, the restored B-L symmetry, can be naturally realized by the preceding topological Higgs inflation.
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U2 - 10.1103/PhysRevD.90.097301
DO - 10.1103/PhysRevD.90.097301
M3 - Article
AN - SCOPUS:84919363004
VL - 90
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 9
M1 - 097301
ER -