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SUMMARY:Dimitrios Tsimpis (IP2I\, Lyon)
DTSTART:20251027T100000Z
DTEND:20251027T110000Z
DTSTAMP:20260423T041818Z
UID:NKUA-HEP/39
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NKUA-HEP/39/
 ">Universal cosmologies</a>\nby Dimitrios Tsimpis (IP2I\, Lyon) as part of
  NKUA HEP Seminars\n\n\nAbstract\nUniversal cosmologies are exact solution
 s of 10d type IIA supergravity containing a 4d Friedmann-Lemaître-Roberts
 on-Walker factor\, that can also be repackaged as solutions of 4d models\,
  i.e. as 4d consistent truncations. We extend the dynamical system analysi
 s of universal cosmologies\, beyond the case of a single exponential poten
 tial. For an open universe (negative 3d spatial curvature)\, these models 
 generally possess many desirable features: parametric control of e-folds\,
  late-time acceleration from potentials with steep exponentials (i.e. in a
 ccordance with swampland bounds)\, small string-loop and α′-corrections
 \, scale separation and/or absence of decompactification.\n
LOCATION:https://researchseminars.org/talk/NKUA-HEP/39/
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