论文标题
在稀的玻色冷凝物中强烈相互作用的杂质的普遍方面
Universal aspects of a strongly interacting impurity in a dilute Bose condensate
论文作者
论文摘要
我们研究了浸入弱相互作用的玻色气体（即玻色极化子）中的杂质的特性。在极限弱杂质 - 玻色子相互作用的可扰动中，其许多特性仅取决于散射长度。在这里，我们证明，对于强（统一的）杂质 - 玻色子相互作用，在稀释的bose气中，玻色极化子的所有静态绝经剂，例如其能量，残基，棕褐色的接触量以及杂质附近被困在附近的玻色子的数量，都取决于通过单个参数的杂质 - 玻色子电位。
We study the properties of an impurity immersed in a weakly interacting Bose gas, i.e., of a Bose polaron. In the perturbatively-tractable of limit weak impurity-boson interactions many of its properties are known to depend only on the scattering length. Here we demonstrate that for strong (unitary) impurity-boson interactions all static quasiproperties of a Bose polaron in a dilute Bose gas, such as its energy, its residue, its Tan's contact and the number of bosons trapped nearby the impurity, depend on the impurity-boson potential via a single parameter.
