[seminar] Seminar Dr. Marija Dimitrijevic (srijeda, 20.02., 11 sati c.t)

[Kornelija Passek]

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


Marija Dimitrijevic

INFN Gruppo Collegato di Alessandria, Italy

"Deformed symmetries in noncommutative field theories"

  Datum: 20. veljace 2008. (srijeda)
  Vrijeme: 11 sati c.t.
  Mjesto: IRB, predavaonica I krila


  Sažetak:
In this talk we discuss the problem of symmetries in noncommutative
field  theories. The twist approach is used to derive deformed
symmetries. In this approach the algebra of symmetry generators 
remains undeformed, but the Leibniz rules for the generators change. 
We give some examples. In the case of the canonically deformed space 
the twisted Poincare and diffeomorphism invariance are derived. 
The twisted diffeomorphism invariance enables the construction 
of the deformed gravity theory. By applying the twist
approach to the superspace we obtain the nonanticommutative
superspace.
A deformation of the Wess-Zumino model is then discussed.





  2008-02-12

  Voditeljica seminara:
  dr. Kornelija Passek Kumericki (passek at thphys.irb.hr)



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Kornelija Passek-Kumericki
  E-mail: passek at thphys.irb.hr
Theoretical Physics Division
Rudjer Boskovic Institute
Bijenicka c. 54, P.O.B. 180
HR-10002 Zagreb, Croatia
Tel: ++385-1-4561-133
Fax: ++385-1-4680-223
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