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Calendar of Physics Talks Vienna
| Chiral shift in relativistic matter in a magnetic field |
| Speaker: | Igor Shovkovy (Arizona State University) |
| Abstract: | We show that the normal phase of dense relativistic matter in a magnetic field is characterized
by a nonzero relative shift of the longitudinal momenta in the dispersion relations of the
left-handed and right-handed fermions. The presence of such a shift in the ground state does not
break any symmetries of the action. To leading order, the corresponding parameter, dubbed the chiral
shift, is linear in the coupling constant. Because of the chiral shift, a dynamical contribution to
the axial current is induced. The induced axial current and the shift of the Fermi surfaces of the opposite
chirality fermions may play an important role in transport and emission properties of matter in various
types of compact stars. It is plausible that related phenomena also modify the chiral magnetic effect
in heavy ion collisions. |
| Date: | Thu, 09.07.2009 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | Inst. f. Theoret. Physik, TU Wien, SEM 136, 10.OG, Wiedner Haupstr. 8-10, 1040 |
| Contact: | Andreas Schmitt |
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