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SUMMARY:&quot\;Probabilistic Language in Quantum Field Theory&quot\; - Pro
 fessor Yuri Dokshitzer\, LPTHE\, Paris and PNPI\, St Petersburg\, Russia
DTSTART:20160120T160000Z
DTEND:20160120T170000Z
UID:TALK63819@talks.cam.ac.uk
CONTACT:Leona Hope-Coles
DESCRIPTION:Do you understand Quantum Mechanics? Well\, Quantum Field Theo
 ry is even worse. Representing quantum dynamics of a system with undefined
  - and undefinable - number of objects\, it offers many troubles of both t
 echnical and conceptual nature. \n\nIn spite of this\, in turns out that m
 any important QFT observables allow for a simple interpretation based on c
 lassical considerations.  \nMarkedly\, this is the case of dynamics of qua
 rk-gluon multiplication inside QCD jets\,- so-called parton evolution equa
 tions that form the ground for all modern high energy experiments at LHC a
 nd elsewhere. \n\nWe will discuss when and why classical dynamics applies 
 to QCD phenomena. \n\nIn particular\, paying due respect to the classical 
 nature of radiation of (relatively) soft gluons helps to avoid conceptual 
 mistakes in constructing the theory of production of heavy-quark bound sta
 tes. \nIt may also offer a breathtaking possibility to find one day a comp
 lete (all-order) analytical solution of the parton dynamics with the help 
 of the maximally super-symmetric QFT of Yang-Mills fields (N=4 SYM) - a cl
 ose relative of QCD.   \n	
LOCATION:Pippard Lecture Theatre\, Cavendish Laboratory
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