论文标题
部分可观测时空混沌系统的无模型预测
Resonantly enhanced superconductivity mediated by spinor condensates
论文作者
论文摘要
在费米子多体系统中实现强烈的相互作用是凝结物理学研究的主要主题。众所周知，费米子之间的相互作用可以通过玻感培养基，例如声子浴或玻色的因凝结物（BEC）介导。在这里，我们表明，当玻感介质是两个组件旋转器BEC时，可以共同增强这种诱导的吸引力。最强的相互作用是通过将玻色子玻色子散射调到bec的量子临界点来实现的，声音速度消失了。 Fermion配对间隙和超导临界温度可以显着增强。我们提出了这种情况的两个实验实现，并在二维半导体和超低原子玻色纤维FERMI混合物中使用了激子 - 波利顿系统。
Achieving strong interactions in fermionic many-body systems is a major theme of research in condensed matter physics. It is well-known that interactions between fermions can be mediated through a bosonic medium, such as a phonon bath or Bose-Einstein condensate (BEC). Here we show that such induced attraction can be resonantly enhanced when the bosonic medium is a two-component spinor BEC. The strongest interaction is achieved by tuning the boson-boson scattering to the quantum critical spinodal point of the BEC where the sound velocity vanishes. The fermion pairing gap and the superconducting critical temperature can thus be dramatically enhanced. We propose two experimental realizations of this scenario, with exciton-polariton systems in two-dimensional semiconductors and ultracold atomic Bose-Fermi mixtures.
