液氦-4基态的协调波函数
A coordinated wavefunction for the ground state of liquid helium-4
摘要：
本文给出了强关联玻色系统基态的变分近似。这种解释超越了Jastrow-Feenberg函数形式，并明确地在波函数的结构中强制执行协调壳。我们将此animals液氦-4与一个简单的三变量参数化的对功能。优化后的波函数被发现给一个很好的描述流体中的中程相关性。我们还证明了使用这种方法来研究非均匀系统的可能性。相分离和自由表面自然出现在这个波函数，即使它是由短程二体函数，不包含单体项。因为没有明确的表面描述是必要的，这提供了一个强大的描述工具的集群状态。
英文摘要：
We present a variational ansatz for the ground state of a strongly correlated Bose system. This ansatz goes beyond the Jastrow-Feenberg functional form and explicitly enforces coordination shells in the structure of the wavefunction. We apply this ansatz to liquid helium-4 with a simple three-variable parametrization of the pair functions. The optimized wavefunction is found to give an excellent description of the mid-range correlations in the fluid. We also demonstrate the possibility to use this ansatz to study inhomogeneous systems. The phase separation and free surface emerge naturally in this wavefunction, even though it is constructed of short-range two-body functions and does not contain one-body terms. Because no explicit description of the surface is necessary, this provides a powerful description tool for cluster states.
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