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SUMMARY:Modified gravity and the cosmological tensions
DTSTART;VALUE=DATE-TIME:20261107T060000Z
DTEND;VALUE=DATE-TIME:20261107T063000Z
DTSTAMP;VALUE=DATE-TIME:20261023T111332Z
UID:indico-contribution-2949@indico.itp.ac.cn
DESCRIPTION:Speakers: Gen Ye (University of Chinese Academy of Sciences)\n
 Cosmological tensions are one of the central topics of modern cosmology. T
 he most prominent is the Hubble tension in which the measured expansion ra
 te of the Universe from distance ladder is more than $5 \\sigma$ larger th
 an that predicted by $\\Lambda$CDM based on CMB. Recently\, BAO observatio
 n from DESI also reports a $2 - 3 \\sigma$ tension with $\\Lambda$CDM whic
 h might point to evolving dark energy. In this talk I will discuss our rec
 ent research on the possible gravitational origin of these cosmological te
 nsions. Starting from model independent reconstruction technique\, we foun
 d that the DESI BAO observation can be well explained by non-minimal coupl
 ing between gravity and matter. Further study shows that the same non-mini
 mal coupled gravity can also naturally explain the Hubble tension\, hintin
 g a common gravitational origin of the two major cosmological tensions.\n\
 nhttps://indico.itp.ac.cn/event/417/contributions/2949/
LOCATION:
URL:https://indico.itp.ac.cn/event/417/contributions/2949/
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