论文标题
强烈排斥相互作用的新机制和超导性的精确理论
New mechanism and exact theory of superconductivity from strong repulsive interaction
论文作者
论文摘要
我们引入了一种具有强烈排斥相互作用的费米系统中超导性的新的通用机制。由于动力学术语与裸露的排斥相比小，因此电荷载体的动态受到附近其他载体的存在的限制。通过将动力学术语视为原子极限周围的扰动，我们表明配对可以由相关的多粒子隧道过程诱导，这些隧道偏爱两个巡回携带者可以靠近。我们的分析控制理论提供了一种定量公式，该公式与微观参数有关，最大$ T_C $达到了费米温度的10％。我们的工作展示了一种强大的方法，可以通过非常规配对对称性研究强耦合超导性。它还提供了一条现实的新途径，以实现光学晶格中自旋偏振费的有限角动量超流量。
We introduce a new and general mechanism for superconductivity in Fermi systems with strong repulsive interaction. Because kinetic terms are small compared to the bare repulsion, the dynamic of charge carriers is constrained by the the presence of other nearby carriers. By treating kinetic terms as a perturbation around the atomic limit, we show that pairing can be induced by correlated multi-particle tunneling processes that favor two itinerant carriers to be close together. Our analytically-controlled theory provides a quantitative formula relating $T_c$ to microscopic parameters, with maximum $T_c$ reaching about 10% of the Fermi temperature. Our work demonstrates a powerful method for studying strong coupling superconductivity with unconventional pairing symmetry. It also offers a realistic new route to realizing finite angular momentum superfluidity of spin-polarized fermions in optical lattice.
