论文标题
耗散两旋链系统中的可调相变：一项重新归一化研究
Tunable phase transition in a dissipative two-spin system: A renormalization group study
论文作者
论文摘要
我们提出并理论上研究了两个分离的旋转的模型，该旋转耦合到一个常见的骨浴。在我们的SU（2） - 对称模型中，可以通过两个自旋之间的距离连续调节代表非经典相的稳定固定点。因此，可以通过简单地更改距离来实现固定点碰撞和歼灭（FPCAA）。此外，当更改距离时，我们详细研究了临界值的变化。最后，我们还讨论了我们模型的几种可能的概括，这可能值得进一步研究。我们的工作对于在此类系统中实现FPCAA至关重要，并为研究相关物理（例如污染的批判性和拟金性）的方式铺平了道路。
We proposed and theoretically studied a model of two separated spins coupled to a common bosonic bath. In our SU(2)-symmetric model, the phase transition point and the stable fixed point representing the nonclassical phase can be continuously tuned by the distance between the two spins. Thus the fixed point collision and annihilation (FPCAA) could be achieved by simply changing the distance. Moreover, we studied in detail variation of the critical value when the distance is changed. Finally, we also discussed several possible generalizations of our model which may be worth further studying. Our work is essential for realization of FPCAA in such systems and paves the way for studying related physics such as deconfined criticality and quasiuniversality.
