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SUMMARY:Matthew Kleban (New York U.\, CCPP)
DTSTART:20231122T150000Z
DTEND:20231122T160000Z
DTSTAMP:20260423T035536Z
UID:AnLy/32
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/AnLy/32/">Ax
 ion Landscapes in Cosmology and String Theory</a>\nby Matthew Kleban (New 
 York U.\, CCPP) as part of AnLy Strings and Fields online seminars\n\n\nAb
 stract\nI will review axion landscapes in cosmology and explain their pote
 ntial for explaining many of the large-scale features of our universe\, in
 cluding the big bang\, inflation\, dark matter\, and dark energy.  These e
 xplanations can be successful when there are O(100s) of axion fields with 
 random scales and a random charge matrix that is not too sparse.  Turning 
 to string theory\, I will describe recent work which numerically sampled t
 he landscape of axions potentials in Calabi-Yau compactifications of type 
 IIB.  While many of these compactifications admit hundreds of axions\, cor
 relations between the scales and charges result in a meager landscape with
  few unique minima in any given compactification.  These results indicate 
 that explaining these features of our universe may require a more general 
 landscape with varying topology or flux.\n
LOCATION:https://researchseminars.org/talk/AnLy/32/
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