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VERSION:2.0
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BEGIN:VEVENT
SUMMARY:Variational method in relativistic quantum field theory without cu
 toff
DTSTART:20210322T140000
DTEND:20210322T150000
DTSTAMP:20260407T113853Z
UID:d7eafe7acf7b6910a5d2fd50deaad7543972a96a4e3b918dd2aa800e
CATEGORIES:Conferences - Seminars
DESCRIPTION:Antoine Tilloy (MPI of Quantum Optics)\nThe variational method
  is a powerful approach to solve many-body quantum problems non perturbati
 vely. However\, in the context of relativistic quantum field theory (QFT)\
 , it needs to meet 3 seemingly incompatible requirements outlined by Feynm
 an: extensivity\, computability\, and lack of UV sensitivity. In practice\
 , variational methods break one of the 3\, which translates into the need 
 to have an IR or UV cutoff. In this talk\, I will introduce a relativistic
  modification of continuous matrix product states that satisfies the 3 req
 uirements jointly in 1+1 dimensions. I will then show how to apply the met
 hod to the self-interacting scalar field\, without UV cutoff and directly 
 in the thermodynamic limit.
LOCATION:zoom https://epfl.zoom.us/j/87575359497?pwd=T0NPTVNMTkN5UTYvT2Z4U
 0pJNkovUT09
STATUS:CONFIRMED
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