纳米多孔介质中~ 4 He的量子临界现象
Quantum Critical Phenomena of 4He in Nanoporous Media
摘要：
在量子临界现象的框架下讨论了最近实验中观察到的Gelsil玻璃中填充~ 4 He液体的超流转变。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4 He填充在以前研究的多孔介质，如Vycor玻璃。由于有效的粒子-空穴对称性，系统的量子临界现象由4D XY普适性类描述，除了在非常低的温度下。简单标度与实验数据吻合得非常好。
英文摘要：
The superfluid transition in liquid 4He filled 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 at the experimentally studied temperature range owing to the small pore size of Gelsil, in contrast to 4He filled 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 4D XY universality class, except at very low temperatures. The simple scaling agrees with the experimental data remarkably well.
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。
