| Dec 10 (Sat) | ||
| 10:50 - 11:00 | Opening | |
| 11:00 - 12:00 | Shigehiro Yasui (Titech) | |
| Kondo effect in strong interaction [part1] [part2] | ||
| The Kondo effect which is well-known in condensed matter physics for electrons and atoms can be seen in nuclear physics for nucleons and quarks. In this talk, I present the recent study of the Kondo effect in strong interaction, where charm/bottom quarks or hadrons (D, Ds mesons) play the roles of impurities possessing non-Abelian interaction (color, isospin, spin) with nucleons or light quarks. The Kondo effect is important for understanding the properties of nuclear or quark matter with the heavy impurities. I show the perturbative treatment by one-loop renormalization group equation as well as the non-perturbative treatment by mean-field approach. | ||
| (Break) | ||
| 13:30 - 14:30 | Sho Ozaki (Keio) | |
| QCD Kondo effect from conformal field theory [pdf] | ||
| Recently, we propose QCD Kondo effect: the Kondo effect induced by the color degrees of freedom in high density quark matter with a heavy quark impurity. In this talk, I will present conformal field theory (CFT) approach to QCD Kondo effect in the IR region below the Kondo scale where the system becomes non-perturbative. To apply the CFT approach to QCD Kondo effect, we develop the approach for general cases of the k-channel SU(N) Kondo system. In particular, for the cases N > k > 1, we find a novel type of the IR behavior in the multi-channel Kondo system: the IR fixed point behaves as the non-Fermi liquid, while the low temperature scaling as the Fermi liquid. Then, we apply the CFT approach to QCD Kondo effect and non-perturbatively determine the several observables in the IR region, including the impurity entropy, the specific heat, the susceptibility and the Wilson ratio of QCD Kondo effect. | ||
| 14:45 - 15:45 | Shun Uchino (Riken) | |
| Impurity problems from 10-9 to 1013 Kelvin [pdf] | ||
| Understanding of impurity effects is the longstanding problem in condensed matter physics. Impurities play roles not simply in killing properties of matters but also in provoking remarkable phenomena. In this talk, in accord with lessons in condensed matter, I will discuss phenomena on impurities in ultracold atoms and quark matter. | ||
| 16:00 - 17:00 | Ryosuke Yoshii (Keio) | |
| Thermoelectric properties of a Kondo quantum dot in the SU(N) Fermi liquid state [pdf] | ||
| The Kondo physics has been atracted theoretical and experimental interests past few decades. Since the first experimental observation of the Kondo effect in semiconducting quantum dot, the high experimental tunability of the mesoscopic system has revailed a lot of aspects for the Kondo effect. In the theoretical poit of view, the mesoscopic system works quite well as the highly controllable test bed. I will talk about the thermal transport in the presence of the Kondo effect, which is not yet well understood, in the basis of the Fermi liquid theory. I will show that the inner degrees of freedom in the quantum dot brings the qualitative difference into the thermal transport. I also show that one of the Fermi liquid parameters appears in the thermal transport coefficients which does not appear in the case of the charge transport. |