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SUMMARY:Seminar\, Arata Ishige (石毛 新\, KEK)
DTSTART;VALUE=DATE-TIME:20260604T043000Z
DTEND;VALUE=DATE-TIME:20260604T053000Z
UID:116210471958
DESCRIPTION:Title: Non-supersymmetric string duality via Enriques surfaces
 \n\nAbstract: \nK3 surfaces have provided a powerful geometric setting for
  studying string dualities\, enhanced gauge symmetries\, and non-perturbat
 ive phenomena. In this talk\, I discuss the possibility that Enriques surf
 aces play an analogous role in non-supersymmetric string theory\, as sugge
 sted in my recent paper [arXiv:2601.22058].\nAn Enriques surface is closel
 y related to K3 as a smooth quotient\, but it naturally leads to compactif
 ications without supersymmetry. Moreover\, like K3\, it has orbifold limit
 s where perturbative string descriptions are available. These special poin
 ts provide a controlled starting point for exploring non-supersymmetric mo
 dels.\nI will explain why this geometry gives a natural basis for expectin
 g dual descriptions\, and how Enriques surfaces may offer a useful framewo
 rk for studying which aspects of string duality survive without supersymme
 try. If time permits\, I will also mention our new results on heterotic st
 rings compactified on Enriques surfaces\, based on joint work with Elisa M
 arieni.
LOCATION:721
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