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SUMMARY:BSM PANDEMIC Delta Series: Kara Farnsworth (Case Western) and Alex
andria Costantino (UC Riverside)
DTSTART;VALUE=DATE-TIME:20211019T180000Z
DTEND;VALUE=DATE-TIME:20211019T200000Z
DTSTAMP;VALUE=DATE-TIME:20211202T210700Z
UID:indico-event-1076429@indico.cern.ch
DESCRIPTION:Kara Farnsworth:\n\nTitle: "Hamiltonian Truncation and Effecti
ve Field Theory"\n\n \n\n\nAbstract: Hamiltonian truncation is a non-pert
urbative numerical method for calculating observables of a quantum field t
heory by truncating the Hilbert space to states with energy below a maximu
m energy cutoff. In this talk I will present an effective field theory ap
proach to Hamiltonian truncation\, which provides a systematic way to impr
ove the calculations without increasing the energy cutoff. I will demonstr
ate this with numerical results for the two dimensional phi^4 theory\, and
talk about future applications of this method to more complicated theorie
s.\n\n\nAlexandria Costantino:\n\nTitle: "Puzzles Regarding the Warping of
the EFT Cutoff in AdS"\n\n \n\nAbstract: It's well known that the metric
warps mass scales upon moving through Anti-de Sitter space. In fact\, thi
s was the premise of the Randall Sundrum solution to the hierarchy problem
over 20 years ago. When applied to the EFT cutoff\, the warping of mass s
cales can lead to a number of apparent puzzles: States that are generated
in one region of the space can appear to be beyond the cutoff of the EFT i
n another region of the space. The mass spacing between heavy KK modes can
also appear to use information from outside of the region of EFT validit
y. In this talk\, I show how the very same higher dimension operators that
lead to EFT breakdown can provide the resolution to the apparent puzzles
they create.\n\nhttps://indico.cern.ch/event/1076429/
URL:https://indico.cern.ch/event/1076429/
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