Nguyen T K T, Kiselev M N
Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Hanoi, Vietnam.
The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, I-34151, Trieste, Italy.
Phys Rev Lett. 2020 Jul 10;125(2):026801. doi: 10.1103/PhysRevLett.125.026801.
We theoretically investigate the thermoelectric transport through a circuit implementation of the three-channel charge Kondo model quantum simulator [Z. Iftikhar et al., Science 360, 1315 (2018)SCIEAS0036-807510.1126/science.aan5592]. The universal temperature scaling law of the Seebeck coefficient is computed perturbatively approaching the non-Fermi liquid strong coupling fixed point using the Abelian bosonization technique. The predicted T^{1/3}logT scaling behavior of the thermoelectric power sheds light on the properties of Z_{3} emerging parafermions and gives access to exploring prefractionalized zero modes in the quantum transport experiments. We discuss a generalization of approach for investigating a multichannel Kondo problem with emergent Z_{N}→Z_{M} crossovers between "weak" non-Fermi liquid regimes corresponding to different low-temperature fixed points.
我们从理论上研究了通过三通道电荷近藤模型量子模拟器的电路实现方式进行的热电输运[Z. Iftikhar等人，《科学》360, 1315 (2018)SCIEAS0036 - 807510.1126/science.aan5592]。利用阿贝尔玻色化技术，微扰地计算了塞贝克系数的通用温度标度律，趋近于非费米液体强耦合不动点。预测的热电功率的(T^{1/3}\log T)标度行为揭示了(Z_3)涌现准费米子的性质，并为在量子输运实验中探索预分数化零模提供了途径。我们讨论了一种方法的推广，用于研究具有对应于不同低温不动点的“弱”非费米液体区域之间涌现的(Z_N→Z_M)交叉的多通道近藤问题。
