Comment on Higgs Inflation and Naturalness

We rebut the recent claim (arXiv:0912.5463) that Einstein-frame scattering in the Higgs inflation model is unitary above the cut-off energy Lambda ~ Mp/xi. We show explicitly how unitarity problems arise in both the Einstein and Jordan frames of the theory. In a covariant gauge they arise from non-m...

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Detalles Bibliográficos
Autores principales: Burgess, C P, Lee, Hyun Min, Trott, Michael
Lenguaje:eng
Publicado: 2010
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1007/JHEP07(2010)007
http://cds.cern.ch/record/1241132
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author Burgess, C P
Lee, Hyun Min
Trott, Michael
author_facet Burgess, C P
Lee, Hyun Min
Trott, Michael
author_sort Burgess, C P
collection CERN
description We rebut the recent claim (arXiv:0912.5463) that Einstein-frame scattering in the Higgs inflation model is unitary above the cut-off energy Lambda ~ Mp/xi. We show explicitly how unitarity problems arise in both the Einstein and Jordan frames of the theory. In a covariant gauge they arise from non-minimal Higgs self-couplings, which cannot be removed by field redefinitions because the target space is not flat. In unitary gauge, where there is only a single scalar which can be redefined to achieve canonical kinetic terms, the unitarity problems arise through non-minimal Higgs-gauge couplings.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
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spelling cern-12411322019-09-30T06:29:59Zdoi:10.1007/JHEP07(2010)007http://cds.cern.ch/record/1241132engBurgess, C PLee, Hyun MinTrott, MichaelComment on Higgs Inflation and NaturalnessParticle Physics - PhenomenologyWe rebut the recent claim (arXiv:0912.5463) that Einstein-frame scattering in the Higgs inflation model is unitary above the cut-off energy Lambda ~ Mp/xi. We show explicitly how unitarity problems arise in both the Einstein and Jordan frames of the theory. In a covariant gauge they arise from non-minimal Higgs self-couplings, which cannot be removed by field redefinitions because the target space is not flat. In unitary gauge, where there is only a single scalar which can be redefined to achieve canonical kinetic terms, the unitarity problems arise through non-minimal Higgs-gauge couplings.arXiv:1002.2730CERN-PH-TH-2010-033PI-PARTPHYS-174oai:cds.cern.ch:12411322010-02-16
spellingShingle Particle Physics - Phenomenology
Burgess, C P
Lee, Hyun Min
Trott, Michael
Comment on Higgs Inflation and Naturalness
title Comment on Higgs Inflation and Naturalness
title_full Comment on Higgs Inflation and Naturalness
title_fullStr Comment on Higgs Inflation and Naturalness
title_full_unstemmed Comment on Higgs Inflation and Naturalness
title_short Comment on Higgs Inflation and Naturalness
title_sort comment on higgs inflation and naturalness
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP07(2010)007
http://cds.cern.ch/record/1241132
work_keys_str_mv AT burgesscp commentonhiggsinflationandnaturalness
AT leehyunmin commentonhiggsinflationandnaturalness
AT trottmichael commentonhiggsinflationandnaturalness

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