The Study of Optoacoustic First and Second Sound Waves in Superfluid Helium under the Effect of Gaussian Laser Light Considering Electrostriction Mechanism

The present paper is aimed to study the effect of Gaussian laser light on first and second sound waves in superfluid helium theoretically using optoacoustic method. The mechanism applied in this study is electrostriction mechanism. This study considers crystal parts of superfluid helium with a zero absorption coefficient applying electrostriction mechanism. Affecting Gaussian laser light on these crystal parts, a spectrum of cylindrical first and second sound waves and cylindrical slow and rapid waves is obtained. Meanwhile, frequency of waves amplitudes proportionate to time period of laser light is calculated.

经络感传的液晶孤子模型

本文介绍了液晶中的孤子理论，假定人体组织间隙中处于液晶相的体液构成了经络的感传介质，引入孤子模型较为成功地解释了经络感传的速度、可阻滞性、双向性等特异性质；

具有第二声波的被囚禁的玻色凝聚体

基于超流体的二流体模型,在球对称的三维各向同性谐振子阱的边界面的温度做周期性变化的情况下,研究了玻色-爱因斯坦凝聚体中第二声波的传播,导出了球对称谐阱中的温度,声速,正常部分和超流部分(凝聚部分)数密度的时空分布函数.结果表明:在阱心处的声速最大,向外随径向距离的增加而非线性地减小.同时还讨论了存在一个涡旋时的情况,以及流动速度的表达式.得到了一些有趣并且新奇的现象。