Ground-state energy of charged quantum fluids in two dimensions.
Ground-state energy of charged quantum fluids in two dimensions.
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二维带电量子流体的基态能量。
DOI：
10.1103/physrevb.34.7123
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Wu
中科院分区：
文献类型：
--
作者：
Sim;Tao;Wu
利用关联基函数方法研究了二维带电量子系统的基态。对于服从玻色-爱因斯坦统计的粒子，我们使用Bijl-Dingle-Jastrow试探波函数计算所有粒子密度的基态能量变分。这样确定的玻色基态能量和波函数接下来用于研究费米系统。我们计算费米基态能量使用集群扩展的方法，这是再次有效的所有粒子密度，并发现基态是顺磁性的。虽然这些计算提供了变分的上界的基态能量，我们也建立了独立的下界的基态能量。
The ground state of a two-dimensional charged quantum system is studied using the method of correlated-basis functions. For particles obeying the Bose-Einstein statistics we compute the ground-state energy variationally for all particle densities using the Bijl-Dingle-Jastrow trial wave function. The Bose ground-state energy and wave function so determined are used next to study the Fermi system. We compute the Fermi ground-state energy using a cluster expansion approach, which is again valid for all particle densities, and find that the ground state is paramagnetic. While these calculations provide variational upper bounds to the ground-state energies, we also establish independent lower bounds to the ground-state energies.