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SUMMARY:Max Wiesner (Harvard U.\, CMSA)
DTSTART:20230503T140000Z
DTEND:20230503T150000Z
DTSTAMP:20260423T021126Z
UID:AnLy/25
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/AnLy/25/">Bo
 unds on Species Scale and the Distance Conjecture</a>\nby Max Wiesner (Har
 vard U.\, CMSA) as part of AnLy Strings and Fields online seminars\n\n\nAb
 stract\nThe species scale serves as a UV cutoff in the gravitational secto
 r of an EFT and can depend on the moduli of the theory as the spectrum of 
 the theory varies. We argue that the slope of the species scale as a funct
 ion of massless (or light) modes is bounded by an O(1) coefficient. This b
 ound is true at all points in moduli space including also its interior. Th
 e argument is based on the idea that the short distance contribution of ma
 ssless modes to gravitational terms in the EFT cannot dramatically affect 
 the black hole entropy. Based on string theory arguments we expect the O(1
 ) constant in this bound to be equal to 1/d-2 as we approach the boundary 
 of the moduli space. However\, we find that the slope of the species scale
  can approach its asymptotic value from above as we go from interior point
 s to the boundaries\, thereby implying that the constant in the bound must
  be larger than 1/d-2. The bound on the variation of the species scale als
 o implies that the mass of towers of light modes cannot go to zero faster 
 than exponential in field distance in accordance with the Distance Conject
 ure.\n
LOCATION:https://researchseminars.org/talk/AnLy/25/
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