KEK素粒子原子核研究所・理論セミナー(山本 直希 准教授)

開始2020/07/14 (火) 11:00
終了2020/07/14 (火) 12:00
会場Online (Zoom)
講演タイトルMagnetic monopoles and fermion number violation in chiral matter
講演者山本 直希 准教授 ( 慶應大学 )
連絡先畠山 洸太/khat -AT-


In this talk, we show that the presence of a magnetic monopole in position space gives rise to a violation of the fermion number conservation in chiral matter. Using the chiral kinetic theory, we derive a model-independent expression of such a violation in nonequilibrium many-body systems of chiral fermions. In local thermal equilibrium at finite temperature and chemical potential, this violation is proportional to the chemical potential with a topologically quantized coefficient. These consequences are due to the interplay between the Dirac monopole in position space and the Berry monopole in momentum space.