[seminar] [DANAS] A.R. de Queiroz, 11.11. (utorak) 11h (s.t.-TOCNO), Predavaona I krila IRB
Kornelija Passek-Kumericki
passek at atila.irb.hr
Tue Nov 11 10:23:43 CET 2014
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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