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Unitarity-violation in generalized Higgs inflation models

Research output: Contribution to journalJournal article

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Unitarity-violation in generalized Higgs inflation models. / Lerner, Rose N.; McDonald, John.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2012, No. 11, 019, 11.2012.

Research output: Contribution to journalJournal article

Harvard

Lerner, RN & McDonald, J 2012, 'Unitarity-violation in generalized Higgs inflation models', Journal of Cosmology and Astroparticle Physics, vol. 2012, no. 11, 019. https://doi.org/10.1088/1475-7516/2012/11/019

APA

Lerner, R. N., & McDonald, J. (2012). Unitarity-violation in generalized Higgs inflation models. Journal of Cosmology and Astroparticle Physics, 2012(11), [019]. https://doi.org/10.1088/1475-7516/2012/11/019

Vancouver

Lerner RN, McDonald J. Unitarity-violation in generalized Higgs inflation models. Journal of Cosmology and Astroparticle Physics. 2012 Nov;2012(11). 019. https://doi.org/10.1088/1475-7516/2012/11/019

Author

Lerner, Rose N. ; McDonald, John. / Unitarity-violation in generalized Higgs inflation models. In: Journal of Cosmology and Astroparticle Physics. 2012 ; Vol. 2012, No. 11.

Bibtex

@article{2242c68edcc2469aa23715441b0825df,
title = "Unitarity-violation in generalized Higgs inflation models",
abstract = "Unitarity-violation presents a challenge for non-minimally coupled models of inflation based on weak-scale particle physics. We examine the energy scale of tree-level unitarity-violation in scattering processes for generalized models with multiple scalar fields where the inflaton is either a singlet scalar or the Higgs. In the limit that the non-minimal couplings are all equal (e. g. in the case of Higgs or other complex inflaton), the scale of tree-level unitarity-violation matches the existing result. However if the inflaton is a singlet, and if it has a larger non-minimal coupling than other scalars in the model, then this hierarchy increases the scale of tree-level unitarity-violation. A sufficiently strong hierarchy pushes the scale of tree-level unitarity-violation above the Planck scale. We also discuss models which attempt to resolve the issue of unitarity-violation in Higgs Inflation.",
keywords = "particle physics - cosmology connection, inflation, cosmology of theories beyond the SM, STANDARD MODEL, DARK-MATTER, SCALAR, GRAVITY, BOSON",
author = "Lerner, {Rose N.} and John McDonald",
year = "2012",
month = nov
doi = "10.1088/1475-7516/2012/11/019",
language = "English",
volume = "2012",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "11",

}

RIS

TY - JOUR

T1 - Unitarity-violation in generalized Higgs inflation models

AU - Lerner, Rose N.

AU - McDonald, John

PY - 2012/11

Y1 - 2012/11

N2 - Unitarity-violation presents a challenge for non-minimally coupled models of inflation based on weak-scale particle physics. We examine the energy scale of tree-level unitarity-violation in scattering processes for generalized models with multiple scalar fields where the inflaton is either a singlet scalar or the Higgs. In the limit that the non-minimal couplings are all equal (e. g. in the case of Higgs or other complex inflaton), the scale of tree-level unitarity-violation matches the existing result. However if the inflaton is a singlet, and if it has a larger non-minimal coupling than other scalars in the model, then this hierarchy increases the scale of tree-level unitarity-violation. A sufficiently strong hierarchy pushes the scale of tree-level unitarity-violation above the Planck scale. We also discuss models which attempt to resolve the issue of unitarity-violation in Higgs Inflation.

AB - Unitarity-violation presents a challenge for non-minimally coupled models of inflation based on weak-scale particle physics. We examine the energy scale of tree-level unitarity-violation in scattering processes for generalized models with multiple scalar fields where the inflaton is either a singlet scalar or the Higgs. In the limit that the non-minimal couplings are all equal (e. g. in the case of Higgs or other complex inflaton), the scale of tree-level unitarity-violation matches the existing result. However if the inflaton is a singlet, and if it has a larger non-minimal coupling than other scalars in the model, then this hierarchy increases the scale of tree-level unitarity-violation. A sufficiently strong hierarchy pushes the scale of tree-level unitarity-violation above the Planck scale. We also discuss models which attempt to resolve the issue of unitarity-violation in Higgs Inflation.

KW - particle physics - cosmology connection

KW - inflation

KW - cosmology of theories beyond the SM

KW - STANDARD MODEL

KW - DARK-MATTER

KW - SCALAR

KW - GRAVITY

KW - BOSON

U2 - 10.1088/1475-7516/2012/11/019

DO - 10.1088/1475-7516/2012/11/019

M3 - Journal article

VL - 2012

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 11

M1 - 019

ER -