Quantum algebraic nature of the phonon spectrum in 4He.
Quantum algebraic nature of the phonon spectrum in 4He.
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DOI：
10.1103/physrevlett.76.1098
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发表时间：
1996-02
影响因子：
8.6
通讯作者：
R-Monteiro;Rodrigues;Wulck
中科院分区：
文献类型：
--
作者：
R-Monteiro;Rodrigues;Wulck
我们提出4 He中的声子服从Heisenberg代数的q变形，并给出了小动量声子色散关系多项式展开的代数解释。与C-V实验数据的比较表明，我们的光谱再现实验一个小于5%的差异。
We propose that the phonons in 4 He obey a q deformation of the Heisenberg algebra and we give an algebraic interpretation for the polynomial expansion of the small momenta phonon dispersion relation. Comparison with C V experimental data shows that our spectrum reproduces the experimental one with a less than 5% discrepancy.