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SUMMARY:TPPC weekly seminar (in-person): Tony Padilla - "Four forms and
  the cosmological constant problem"
DTSTART:20260318T123000Z
DTEND:20260318T134500Z
DTSTAMP:20260510T120100Z
UID:indico-event-722@indico.kcl.ac.uk
DESCRIPTION:\n\n\n\n\n\nTitle: Four forms and the cosmological const
 ant problem \nAbstract: The cosmological constant problem remains o
 ne of the deepest puzzles in effective field theory and cosmology. In
  this talk\, I will show how four-form field strengths offer model builde
 rs a valuable tool to tackle this challenge. I begin by reframing the pr
 oblem using the infinite-wavelength (spacetime-averaged) trace of the
  gravitational equations. I then review and explore two main direction
 s: first\, how four-forms can make the cosmological constant dynamic
 ally adjustable\, how charged membranes scan a landscape of vacua\, and 
 whether this requires anthropic selection or could instead follow from pro
 babilistic dynamics. In the second part\, I discuss a different role for
  four-forms in vacuum energy sequestering and present new ideas for em
 bedding this and related mechanisms in higher-dimensional constructions.
 \n\n\n\n\n\n\n\n\n\n\n\n \n\n\n\n\n\n\nhttps://indico.kcl.ac.uk/event/722
 /
URL:https://indico.kcl.ac.uk/event/722/
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