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SUMMARY:Andreas Schachner (LMU Munich & Cornell)
DTSTART:20250313T070000Z
DTEND:20250313T080000Z
DTSTAMP:20260423T010457Z
UID:HETnyuad/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/HETnyuad/1/"
 >Candidate de Sitter vacua in string theory</a>\nby Andreas Schachner (LMU
  Munich & Cornell) as part of High Energy Theory NYU Abu Dhabi\n\nLecture 
 held in NYU Abu Dhabi ERB C1-045.\n\nAbstract\nWe  construct  compactifica
 tions of type IIB string theory that yield\, at leading order in the $\\al
 pha^\\prime$ and $g_s$ expansions\, de Sitter vacua of the form envisioned
  by Kachru\, Kallosh\, Linde\, and Trivedi.  We specify explicit Calabi-Ya
 u orientifolds and quantized fluxes for which we derive the four-dimension
 al effective supergravity theories\, incorporating the exact flux superpot
 ential\, the nonperturbative superpotential from Euclidean D3-branes\, and
  the K\\"ahler potential  at tree level in the string loop expansion but t
 o all orders in $\\alpha'$. Each example includes a Klebanov-Strassler thr
 oat region containing a single anti-D3-brane\, whose supersymmetry-breakin
 g energy\, computed at leading order in $\\alpha'$\,  causes an uplift to 
 a metastable de Sitter vacuum in which all moduli are stabilized. Finding 
 vacua that demonstrably survive subleading corrections\, and in which the 
 quantization conditions are completely understood\, is an important open p
 roblem for which this work has prepared the foundations.\n
LOCATION:https://researchseminars.org/talk/HETnyuad/1/
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