arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0907.2472cond-mat.mes-hallcond-mat.str-el
收藏

分数填充因子为1/q时FQHE系统的精确本征函数I.正式结果

Exact eigenfunctions of FQHE systems at fractional filling factors 1/q. I. Formal results

Alejandro Cabo, Francisco Claro

摘要:

在填充因子为1/q(q为奇数)的情况下,求出了投影到LLL上后的哈密顿问题的本征态.解决方案被发现的一个无限类的有限样本中的库仑势周期性地延长。因此,热力学极限解决方案也被确定。结果表明,可积性的存在下的可积性系统。多粒子态是由特殊的单粒子态构成的简单的斯莱特行列式。这些轨道被定义为与约化磁场B/q相关联的“复合费米子”类波函数的q阶幂。与此同时,这些“复合费米子”状态是通过因式分解和取消先前推导的精确Hartree-Fock轨道中的固定位置(准动量无关)零点而获得的。给出了有限样本情况下以及热力学极限状态下的量子态的每粒子能量公式。作为一个副作用,同样的“复合费米子”像轨道被用来构建系统的变分波函数,当两个电子彼此接近时,显示q阶的零点,就像劳克林态一样。与起始HF溶液相关联的长程空间相关性可以进一步降低这些状态的能量。

英文摘要:

Eigenstates of the FQHE hamiltonian problem after to be projected on the LLL are determined for filling factors 1/q, with q an odd number. The solutions are found for an infinite class of finite samples in which the Coulomb potential is periodically extended. Therefore, a thermodynamic limit solution is also identified. The results suggest the presence of integrability properties in FQHE systems. The many particle states are simple Slater determinants constructed with special single particle states. These orbitals are defined as powers of order q of "composite fermion" like wavefunctions associated to a reduced magnetic field B/q. At the same time, those "composite fermion" states were obtained by factorizing and canceling fixed position (quasi-momentum independent) zeros in previously derived exact Hartree-Fock orbitals. A formula for the energy per particle of the FQHE states is given for finite samples as well as for the thermodynamic limit state. As a side result, the same "composite fermions" like orbitals are employed to construct variational wavefunctions of the system, showing zeros of order q as two electrons approach each other, as Laughlin states do. The long range spatial correlation associated to the starting HF solutions may further reduce the energy of these states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑