(5)实验研究的材料,不大可能是纯粹的Kitaev (K)体系,海森堡交换耦合(J)与非对角交换作用(Γ)也需要考虑。Egger他们正是基于这一实验考量,发展了较为完备的JKΓ哈密顿模型(他们称之为extended Kitaev model)。了不起之处在于,虽然这样的完备模型不可能像纯粹的Kitaev模型那样...
(5)实验研究的材料,不大可能是纯粹的Kitaev (K)体系,海森堡交换耦合(J)与非对角交换作用(Γ)也需要考虑。Egger他们正是基于这一实验考量,发展了较为完备的JKΓ哈密顿模型(他们称之为extended Kitaev model)。了不起之处在于,虽然这样的完备模型不可能像纯粹的Kitaev模型那样...
^J. Nasu, Y. Kato, Y. Kamiya, and Y. Motome, Successive Majorana topological transitions driven by a magnetic field in the Kitaev model, Phys. Rev. B 98, 060416(R) (2018) ^D. C. Ronquillo, A. Vengal, and N. Trivedi, Signatures of magnetic-field-driven quantum phase transitions ...
Kitaev honeycomb model 简介1 首先提前祝大家新年快乐。 本篇文章是Kitaev honeycomb model的学习笔记,对这个模型的一些简单特性做了一些归纳,如发现错漏或是有其他comment欢迎在评论区提出。 Kitaev honeycomb model [1]是Kitaev提出的众多模型之一,是一个严格可解的Z2自旋液体 [2][3]。为什么叫Z2自旋液体?为了知...
A notable exception is the exactly solvable Kitaev model, in which spin degrees of freedom fractionalize into Majorana fermions and a Z(2) gauge field. Here, we discuss the physics of fractionalization in three-dimensional Kitaev models and demonstrate that the itinerant Majorana fermions g...
We introduce two disorder-free variants of the Sachdev-Ye-Kitaev (SYK) model, demonstrate their integrability, and study their static and dynamical properties. Unlike diagrammatic techniques, the integrability of these models allows us to obtain dynamical correlation functions even when the number of ...
25 国际基础科学大会-From the Sachdev-Ye-Kitaev model to a universal theory of strange 1:09:30 国际基础科学大会-Dynamical degrees-Serge Cantat 52:21 国际基础科学大会-Measure Rigidity beyond Homogeneous Dynamics-Simion Filip 59:32 国际基础科学大会-From condensed matter theory to subwavelength physics...
We compute the Krylov and the Lyapunov exponents in the Sachdev-Ye-Kitaev model and in some of its deformations. We do this analysis both at infinite and finite temperatures, in models where the number of fermionic interactions is both finite and infinite. We consider deformations that ...
We study a one-dimensional version of the Kitaev model on a ring of sizeN , in which there is a spin S>1/2 on each site and the Hamiltonian is J∑SS. The cases where S is integer and half-odd integer are qualitatively different. We show that there is a Z-valued conserved ...
We formulate a Majorana mean-field theory for the extended JKΓ Kitaev model in a magnetic Zeeman field of arbitrary direction, and apply it for studying spatially inhomogeneous states harboring vortices. This mean-field theory is exact in the pure Kitae