Four-dimensional XY quantum critical behavior of 4He in nanoporous media
Four-dimensional XY quantum critical behavior of 4He in nanoporous media
复制标题
纳米多孔介质中 4He 的四维 XY 量子临界行为
DOI：
10.1103/physrevb.84.020515
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Keiya Shirahama
中科院分区：
文献类型：
--
作者：
Thomas Eggel;Masaki Oshikawa;Keiya Shirahama
本文在量子临界现象的框架下讨论了最近实验中观察到的Gelsil玻璃中充液的超流转变。我们表明，量子波动的相位确实是重要的，在实验研究的温度范围内，由于小孔径的Gelsil，在对比tofilled在以前研究的多孔介质，如Vycor玻璃。作为一个有效的粒子-空穴对称性的结果，该系统的量子临界现象所描述的四维普适性类，除了在量子临界点附近，和由此产生的简单的缩放同意与实验数据非常好。
The superfluid transition in liquidfilled in Gelsil glass observed in recent experiments is discussed in the framework of quantum critical phenomena. We show that quantum fluctuations of phase are indeed important in the experimentally studied temperature range owing to the small pore size of Gelsil, in contrast tofilled in previously studied porous media such as Vycor glass. As a consequence of an effective particle-hole symmetry, the quantum critical phenomena of the system are described by the four-dimensionaluniversality class, except in the immediate vicinity of the quantum critical point, and the resulting simple scaling agrees with the experimental data remarkably well.