Superfluid Transition of4He Film Adsorbed on Packed Fine Powder

摘要: The superfluid transition of thin film 4He adsorbed on packed fine powder is studied theoretically with emphasis the role vortices. In this system forms a three-dimensional, multiply-connected network. It shown that interaction between vortices proportional to distance like `string' due quantum behavior flow, and are `confined' at low temperatures. stiffness string connecting two calculated by renormalization. found takes place appearance free temperature which depends particle diameter.