Mariani Eros, Stern Ady
Department of Condensed Matter Physics, The Weizmann Institute of Science, Rehovot, Israel.
Phys Rev Lett. 2005 Dec 31;95(26):263001. doi: 10.1103/PhysRevLett.95.263001. Epub 2005 Dec 20.
In this Letter, we derive the dispersion relation of the surface waves at the interfaces between Mott-insulating and superfluid domains for a two-dimensional Bose-Einstein condensate in an optical lattice subjected to a confining potential. We then calculate their contribution to the heat capacity of the system and show how its low-temperature scaling allows an experimental test of the existence and properties of Mott insulator-superfluid domains.
在这封信中，我们推导了处于光学晶格中且受到限制势的二维玻色 - 爱因斯坦凝聚体在莫特绝缘域与超流域界面处表面波的色散关系。然后，我们计算了它们对系统热容量的贡献，并展示了其低温标度如何能够对莫特绝缘体 - 超流域的存在及其性质进行实验检验。
