March 18, 2019 Working paper Open Access

Maurice H.P.M. van Putten

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