Speaker
DIVYARANI C G
(University of Stavanger)
Description
We consider the instabilities of field perturbations around a homogeneous background color-electric and/or -magnetic field in SU(2) pure gauge theory. We investigate a number of distinct cases of background magnetic and electric fields, and compute the dispersion relations in the linearised theory, identifying stable and unstable momentum modes. In the case of a net homogenous non-abelian $B$-field, we compute the non-linear (quadratic and cubic) corrections to the equation of motion, and quantify to what extent the instabilities are tempered by these non-linearities.
| Abstract | the gauge field instabilities in the quark-gluon plasma (QGP) arise from fluctuations in the color fields associated with the strong force. ie, Fluctuations in the distribution of color charges result in fluctuations in the chromoelectric and chromomagnetic fields which generates unstable modes. These instabilities can occur due to variations in the color current distribution and result in non-uniformities in the color magnetic field. We conduct a detail investigation on such gauge field instabilities in pure SU2 gauge thoery. |
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Primary authors
Prof.
Anders Tranberg
(University of Stavanger)
DIVYARANI C G
(University of Stavanger)
