论文标题
量子退火批判性：缩放描述
Quantum Annealed Criticality: A Scaling Description
论文作者
论文摘要
在实验上，存在许多在有限温度下具有一阶相变的材料，这些材料显示量子临界。从经典上讲，已知应变能密度耦合可在可压缩系统中驱动一阶转变，在这里我们将这种Larkin-Pikin机理推广到量子情况。我们表明，如果t = 0系统位于其上部临界维度上方，则一阶转换线以“量子退火临界点”结束，其中零点波动恢复了顺序参数的基本临界。提出了广义的larkin-pikin相图，并讨论了实验后果。
Experimentally there exist many materials with first-order phase transitions at finite temperature that display quantum criticality. Classically, a strain-energy density coupling is known to drive first-order transitions in compressible systems, and here we generalize this Larkin-Pikin mechanism to the quantum case. We show that if the T=0 system lies above its upper critical dimension, the line of first-order transitions ends in a "quantum annealed critical point" where zero-point fluctuations restore the underlying criticality of the order parameter. The generalized Larkin-Pikin phase diagram is presented and experimental consequences are discussed.
