30 Oct 2019 · Yingfei Gu, Alexei Kitaev, Subir Sachdev, Grigory Tarnopolsky · Edit social preview We describe numerous properties of the Sachdev-Ye-Kitaev model for complex fermions with N≫1 flavors and a global U(1) charge. We provide a general definition of the charge in the (G,...
In this paper, we study the Loschmidt Echo (LE) of a two-dimensional Kitaev model residing on a honeycomb lattice which is chosen to be an environment that is coupled globally to a central spin. The decay of LE is highly influenced by the quantum criticality of the environmental spin model...
虽然现在出去开会或者请人来做报告都会和对方说自己是做量子相变,重费米物理和非费米液体的人儿,但其实最早入的强关联坑是著名的Kondo效应,只不过入坑之时Kondo效应除了量子点里面的实验还有一些活跃度之外,理论研究已经很少了,虽然帮当时科大某老师做过一点拟合实验数据的工作,不过却没有啥正式见刊的paper出来. 最近...
In this paper we have studied the edge modes of a finite size Kitaev model on a square lattice. The advantage of studying the finite system is that the obtained result can be demonstrated in synthetic lattice system. We studied the Majorana edge modes for the Kitaev model in a cylindrical ...
In this paper, we examine Kitaev's lattice model for an arbitrary complex, semisimple Hopf algebra. We prove that this model gives the same topological invariants as Turaev-Viro theory. Using the description of Turaev-Viro theory as an extended TQFT, we prove that the excited states of the ...
In this paper, we only consider repulsive nearest neighbor interaction with U ≥ 0. When U = 0, this model will reduce to the usual (non-interacting) Kitaev chain7. The Hamiltonian has the fermion number parity \({Z}_{2}^{f}\) symmetry, which is defined as $${Z}_{2}^...
], they explored the critical properties of Berry curvature during the topological phase transitions of this model, and the mean Uhlmann curvature and the Uhlmann number were also investigated for the finite-temperature Kitaev model [10]. However, it should be pointed out that the usual geometric...
Spin gap measurement from the Heisenberg-Kitaev model To elucidate the slow recovery dynamics in Na2Co2TeO6and its relation to the low-energy spin structure, we simulate the spin-1/2 Kitaev-Heisenberg Hamiltonian to describe the microscopic states of Na2Co2TeO661,62. This model captures the supe...
radical chiral floquet phases in a periodically driven kitaev model and beyond radical chiral floquet phases in a periodically driven kitaev model and beyond HC Po,L Fidkowski,A Vishwanath,... 被引量: 0发表: 2019年 Resonantly Tunable Majorana Polariton in a Microwave Cavity We study the ...
Hidden symmetries of the extended Kitaev-Heisenberg model: implications for the honeycomb-lattice iridates A2IrO3. Phys. Rev. B 92, 024413 (2015). ADS Google Scholar Kitaev, A. Anyons in an exactly solved model and beyond. Ann. Phys. 321, 2–111 (2006). ADS MathSciNet MATH Google ...