March 18, 2019 Working paper Open Access

Maurice H.P.M. van Putten

DCAT Export

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            <foaf:name>Sejong University</foaf:name>
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    <dct:title>Alleviating $\Lambda$CDM tension in Pantheon in late time quantum cosmology</dct:title>
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    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear">2019</dct:issued>
    <dcat:keyword>Hubble parameter dark energy quantum gravity</dcat:keyword>
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    <dct:description>&lt;p&gt;Surveys of the Local Universe show a Hubble expansion significantly greater than $\Lambda$CDM estimates from the Cosmic&amp;nbsp;&lt;br&gt; Microwave Background by Planck. This may present a challenge to our application of general relativity to cosmology.&amp;nbsp;&lt;br&gt; Such tensions are expected in quantum cosmology, wherein de Sitter space is unstable by dark energy from the cosmological&amp;nbsp;&lt;br&gt; horizon ${\cal H}$. We report on a novel probe of late time cosmology in terms of matter density $\omega_m$ estimated over inner intervals&amp;nbsp;$[0,z_{\max}]$. Independent of Planck, Pantheon data over $0&amp;lt;z_{\max}\le2.26$ are found to exclude $\Lambda$CDM by&amp;nbsp;&lt;br&gt; $4.3\sigma$. In quantum cosmology, this reduces to $2.5\sigma$. (Published in revised form in MNRAS Letters, 2019,&amp;nbsp;&lt;a href="https://doi.org/10.1093/mnrasl/slz158"&gt;https://doi.org/10.1093/mnrasl/slz158&lt;/a&gt;; AAS234 Press Conference,&amp;nbsp;https://www.youtube.com/watch?v=bNdscedDCnQ)&lt;/p&gt; &lt;p&gt;&amp;nbsp;&lt;/p&gt;</dct:description>
    <dct:description>Follow-up to "H0 tension in Swampland: theory confronts reality", Nov 28-30, 2018, APCTP, Pohang</dct:description>
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