BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Daniele Oriti (Professor\, Arnold Sommerfeld Center for Theoretica l Physics • Ludwig-Maximilians-Universität (LMU) München) DTSTART:20200618T120000Z DTEND:20200618T140000Z DTSTAMP:20260423T011048Z UID:QASTM/12 DESCRIPTION:Title: W hat is space? what is time? the quest for quantum gravity\nby Daniele Oriti (Professor\, Arnold Sommerfeld Center for Theoretical Physics • Lu dwig-Maximilians-Universität (LMU) München) as part of Quantum Aspects o f Space-Time and Matter\n\n\nAbstract\nWe introduce the problem of quantum gravity\, its motivations and challenges at the conceptual as well as phy sical level. In particular\, we emphasize how constructing a new consisten t quantum theory of the gravitational field implies deepening our understa nding of the nature of space and time themselves. We overview existing the oretical approaches and proposals\, and some recent results. Among the mos t recent suggestions\, we illustrate the idea that spacetime itself could be understood as an emergent notion\, and that geometry and topology may f ind their root in quantum entanglement. Finally\, we illustrate some of th e general points by discussing one specific quantum gravity formalism\, so -called group field theories\, a promising recent blend (and evolution) of matrix/tensor models\, loop quantum gravity and lattice quantum gravity\, we discuss how cosmology could be understood\, from a quantum gravity per spective\, and how effective cosmological equations can be extracted from group field theories.\n LOCATION:https://researchseminars.org/talk/QASTM/12/ END:VEVENT END:VCALENDAR