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WIMP dark matter and unitarity-conserving inflation via a gauge singlet scalar

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WIMP dark matter and unitarity-conserving inflation via a gauge singlet scalar. / Kahlhoefer, Felix; McDonald, John.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2015, No. 11, 015, 09.11.2015.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Kahlhoefer, F & McDonald, J 2015, 'WIMP dark matter and unitarity-conserving inflation via a gauge singlet scalar', Journal of Cosmology and Astroparticle Physics, vol. 2015, no. 11, 015. https://doi.org/10.1088/1475-7516/2015/11/015

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Vancouver

Kahlhoefer F, McDonald J. WIMP dark matter and unitarity-conserving inflation via a gauge singlet scalar. Journal of Cosmology and Astroparticle Physics. 2015 Nov 9;2015(11). 015. https://doi.org/10.1088/1475-7516/2015/11/015

Author

Kahlhoefer, Felix ; McDonald, John. / WIMP dark matter and unitarity-conserving inflation via a gauge singlet scalar. In: Journal of Cosmology and Astroparticle Physics. 2015 ; Vol. 2015, No. 11.

Bibtex

@article{1e7ba5f6328a41e3895200b7436852ad,
title = "WIMP dark matter and unitarity-conserving inflation via a gauge singlet scalar",
abstract = "A gauge singlet scalar with non-minimal coupling to gravity can drive inflation and later freeze out to become cold dark matter. We explore this idea by revisiting inflation in the singlet direction (S-inflation) and Higgs Portal Dark Matter in light of the Higgs discovery, limits from LUX and observations by Planck. We show that large regions of parameter space remain viable, so that successful inflation is possible and the dark matter relic abundance can be reproduced. Moreover, the scalar singlet can stabilise the electroweak vacuum and at the same time overcome the problem of unitarity-violation during inflation encountered by Higgs Inflation, provided the singlet is a real scalar. The 2-σ Planck upper bound on ns imposes that the singlet mass is below 2 TeV, so that almost the entire allowed parameter range can be probed by XENON1T",
keywords = "dark matter theory, inflation, cosmology of theories beyond the SM",
author = "Felix Kahlhoefer and John McDonald",
year = "2015",
month = nov,
day = "9",
doi = "10.1088/1475-7516/2015/11/015",
language = "English",
volume = "2015",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "11",

}

RIS

TY - JOUR

T1 - WIMP dark matter and unitarity-conserving inflation via a gauge singlet scalar

AU - Kahlhoefer, Felix

AU - McDonald, John

PY - 2015/11/9

Y1 - 2015/11/9

N2 - A gauge singlet scalar with non-minimal coupling to gravity can drive inflation and later freeze out to become cold dark matter. We explore this idea by revisiting inflation in the singlet direction (S-inflation) and Higgs Portal Dark Matter in light of the Higgs discovery, limits from LUX and observations by Planck. We show that large regions of parameter space remain viable, so that successful inflation is possible and the dark matter relic abundance can be reproduced. Moreover, the scalar singlet can stabilise the electroweak vacuum and at the same time overcome the problem of unitarity-violation during inflation encountered by Higgs Inflation, provided the singlet is a real scalar. The 2-σ Planck upper bound on ns imposes that the singlet mass is below 2 TeV, so that almost the entire allowed parameter range can be probed by XENON1T

AB - A gauge singlet scalar with non-minimal coupling to gravity can drive inflation and later freeze out to become cold dark matter. We explore this idea by revisiting inflation in the singlet direction (S-inflation) and Higgs Portal Dark Matter in light of the Higgs discovery, limits from LUX and observations by Planck. We show that large regions of parameter space remain viable, so that successful inflation is possible and the dark matter relic abundance can be reproduced. Moreover, the scalar singlet can stabilise the electroweak vacuum and at the same time overcome the problem of unitarity-violation during inflation encountered by Higgs Inflation, provided the singlet is a real scalar. The 2-σ Planck upper bound on ns imposes that the singlet mass is below 2 TeV, so that almost the entire allowed parameter range can be probed by XENON1T

KW - dark matter theory

KW - inflation

KW - cosmology of theories beyond the SM

U2 - 10.1088/1475-7516/2015/11/015

DO - 10.1088/1475-7516/2015/11/015

M3 - Journal article

VL - 2015

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 11

M1 - 015

ER -