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VERSION:2.0
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SUMMARY:Trans-series from condensates
DTSTART:20240318T140000
DTEND:20240318T150000
DTSTAMP:20260503T052006Z
UID:51453281d99976e121edafef5e28699d7cdf679cfa9ee332d75fe7a7
CATEGORIES:Conferences - Seminars
DESCRIPTION:Marcos Mariño\nThe SVZ sum rules were invented as an analytic
  approach to non-perturbative\nquantum field theory (QFT) and have played 
 a crucial role in QCD phenomenology. They combine\nthe operator product ex
 pansion with the assumption of vacuum condensates\, and they\ncan be used 
 to compute exponentially small corrections to perturbative series in QFT. 
 In the language\nof the theory of resurgence\, they provide a conjectural 
 method to calculate trans-series in QFT.\nIf the SVZ approach captures fun
 damental non-perturbative physics\,\nit should be able to reproduce trans-
 series which can be obtained from well-established non-perturbative method
 s.\nIn this talk I will provide a general overview of the SVZ approach for
  the theoretician\, and then I will present a precision test\nof this appr
 oach in the Gross-Neveu model\, where exact trans-series can be obtained f
 rom large N methods.\nI will show that the SVZ method correctly reproduces
  the first two non-perturbative corrections to the fermion self-energy\,\n
 as due to a two-quark and a four-quark condensate\, and at all loops.
LOCATION:BSP 727 https://plan.epfl.ch/?room==BSP%20727
STATUS:CONFIRMED
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