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SUMMARY:Nonperturbative flipped SU(5) vacua in heterotic M-theory
DTSTART;VALUE=DATE-TIME:20020702T103000Z
DTEND;VALUE=DATE-TIME:20020702T113000Z
DTSTAMP;VALUE=DATE-TIME:20261109T045908Z
UID:indico-event-1270@indico.ific.uv.es
DESCRIPTION:There is experimental support for the embedding of the Standar
 d Model fermions in the chiral ${\\bf 16}$ $SO(10)$ representation. Such a
 n embedding is afforded by the realistic free fermionic heterotic--string 
 models. In this paper we advance the study of these string models toward a
  non--perturbative analysis by generalizing the work of Donagi\, Pantev\, 
 Ovrut and Waldram from the case of $G=SU(2n+1)$ to $G=SU(2n)$ stable holom
 orphic vector bundles on elliptically fibered Calabi--Yau manifolds with f
 undamental group ${\\bf Z}_2$. We demonstrate existence of $G=SU(4)$ solut
 ions with three generations and $SO(10)$ observable gauge group over Hirze
 bruch base surface\, whereas we show that certain classes of del Pezzo bas
 e surface do not admit such solutions. The $SO(10)$ symmetry is broken to 
 $SU(5)\\times U(1)$ by Wilson lines. The overlap with the realistic free f
 ermionic heterotic--string models is discussed.\n\nhttps://indico.ific.uv.
 es/event/1270/
LOCATION:Dpto. de Física Teórica (UVEG) Sala Seminarios
URL:https://indico.ific.uv.es/event/1270/
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