[seminar] A.R. de Queiroz, 11.11. (utorak) 11h (s.t.-TOCNO), Predavaona I krila IRB

[Kornelija Passek-Kumericki]

                       SEMINAR  TEORIJSKE  FIZIKE


   (Zajednički seminari Fizičkog odsjeka PMF-a te Zavoda za teorijsku
    fiziku i Zavoda za eksperimentalnu fiziku IRB-a)

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Spontaneous Lorentz Violation: The Case of Infrared QED



Amilcar R. de Queiroz
Brasilia University, Brazil
Zaragoza University, Spain

   Datum:  utorak, 11. studeni 2014.
   Vrijeme: 11 sati s.t. (TOCNO)
   Mjesto: IRB, predavaona I krila


Sazetak:

Long ago Frohlich, Morchio and Strocchi discovered that Lorentz symmetry 
is spontaneously broken in QED. This work was later extended. 
Based on this literature, two of us proposed a simple modification of 
QED incorporating this Lorentz violation, but compatible in particular
with locality, which is based on a generalization of the U(1) charge group 
of QED to the Sky group and the study of its superselection sectors. 
We further elaborate this approach here and investigate in some detail 
the properties of charged particles dressed by the infrared photons.
Violation of Lorentz invariance is manifest in the dispersion relation 
and can be confirmed by its measurement. 
The mass of the charged particle is not Lorentz invariant and that affects 
its spin content. Time dilation formulae for decays also get corrections. 
These effects can be measured.


Voditeljica seminara: Kornelija Passek-Kumericki (passek at irb dot hr)
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