AI 中文总结
该研究分析二维量子伊辛模型自发对称破缺区界面的幺正时间演化,利用体理论渐近准粒子态基解析确定粗糙相大时间序参量,揭示其随距临界点距离增加崩溃的机制。
AI 中文摘要
我们研究二维量子伊辛模型自发对称破缺区域内界面的幺正时间演化,该界面由空间维度上介于两个简并基态之间插值的初始条件诱导,为探究后期动力学对初始条件的依赖,该插值取一般形式。利用体理论的渐近准粒子态基,在粗糙相的大时间极限下解析确定了序参量,且该理论揭示了随与临界点距离增加导致该相崩溃的机制。
英文摘要
We consider the unitary time evolution of an interface in the regime of spontaneously broken symmetry of the two-dimensional quantum Ising model. The interface is induced by an initial condition interpolating between the two degenerate ground states in one of the spatial dimensions. The interpolation is left generic in order to investigate the dependence of the late time dynamics on the initial condition. Exploiting the basis of asymptotic quasiparticle states of the bulk theory, the order parameter is analytically determined at large times in the rough phase. The mechanism allowing the breakdown of this phase as the distance from criticality increases emerges from the theory.