BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Angel Uranga (IFT Madrid) DTSTART:20210415T143000Z DTEND:20210415T153000Z DTSTAMP:20260423T041344Z UID:HEPTUW/21 DESCRIPTION:Title: Rolling down to the end of the world\nby Angel Uranga (IFT Madrid) as part of HEP seminars TU Wien (Vienna)\n\n\nAbstract\nWe discuss string the ory configurations sitting on the slope of scalar potentials (aka tadpoles ) and discuss properties of their spacetime dependent solutions. We argue that these solutions can extend only a finite distance away in the spaceti me dimensions\, scaling as \\Delta^{-n}\\sim {\\cal T} with the strength o f the tadpole {\\cal T}. We show that naive singularities arising at this distance scale are physically replaced by ends of spacetime\, related to t he cobordism defects of the swampland cobordism conjecture. We illustrate these phenomena in large classes of examples\, including susy and non-susy 10 string theories and a 6d string model whose tadpole triggers spontaneo us compactification to a semirealistic 3-family MSSM-like particle physics model.\n LOCATION:https://researchseminars.org/talk/HEPTUW/21/ END:VEVENT END:VCALENDAR