[seminar] DANAS: C. Young, Towards covariant particle exchange in kappa-deformed QFT

[Kresimir Kumericki]

INSTITUT "Ruder Boskovic"
ZAVOD ZA TEORIJSKU FIZIKU
Bijenicka c. 54, Zagreb, Hrvatska

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                SEMINAR TEORIJSKE  FIZIKE
  (Zajednicki seminari Zavoda za fiziku PMF-a i
       Zavoda za teorijsku fiziku  IRB-a)

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                     http://thphys.irb.hr/apache2-default/Seminar/seminar.htm


Dr. Charles Young

Department of Mathematical Sciences
University of Durham


"Towards covariant particle exchange in kappa-deformed quantum field
theory"

  Datum: 14. svibnja 2008. (srijeda)
  Vrijeme: 14:30 sati c.t.
  Mjesto: IRB, predavaonica I krila


  Sazetak:

In seeking to construct quantum field theories with kappa-deformed
Poincare symmetry, one important ingredient is a notion of particle exchange,
and hence of identical particles. Such a notion will encode the correct
modification to the usual algebra of creation/annihilation operators
acting on the Fock vacuum, and is necessary if the counting of states is to
agree with the undeformed case. Defining the exchange of identical
particles in a covariant fashion amounts to finding certain intertwiners of 
tensor products of single-particle representations, and the noncocommutaive 
coalgebra of kappa-Poincare means that this poses an interesting challenge. I 
will discuss some recent work on this topic, and argue that it is possible
to realize the symmetric group S_N on the N-fold tensor product of
single-particle states.



  2008-05-08

  Voditeljica seminara:
  dr. Blazenka Melic