Naslov
Neutrino propagation in noncommutative spacetimes

Autori
Horvat, Raul ; Ilakovac, Amon ; Schupp, P. ; Trampetic, Josip ; You, Jiangyang

Izvornik
The Journal of high energy physics (1126-6708) 2012 (2012), 4; 108, 27

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
non-commutative geometry ; neutrino physics ; nonperturbative effects

Sažetak
One-loop theta-exact quantum corrections to the neutrino propagator are computed in noncommutative U_*(1) gauge theory based on Seiberg-Witten maps. Our closed form factors shhow that the one-loop correction contains hard 1/epsilon UV divergence, as well as a logarithmic IR-divergent term of the type \ln\sqr(\theta p)^2};, thus considerably softening the usual UV/IR mixing phenomenon. We show that both of this problematic terms vanish for a certain choice of the noncommutative parameter theta which preserves unitatity. We find non-pertubative modifications of the neutrino dispersion relations which are assynptotically independent of the scale of noncommutativity in both low and high energy limits and may allow superluminal propagation.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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