| 外场中一种钻石型等级晶格上Gaussian模型的临界性质 |
| |
| 引用本文： | 孔祥木,张红香.外场中一种钻石型等级晶格上Gaussian模型的临界性质[J].青岛大学学报(自然科学版),2000,13(3):65-67. |
| |
| 作者姓名： | 孔祥木 张红香 |
| |
| 作者单位： | 曲阜师范大学物理系!曲阜 273165，曲阜师范大学物理系!曲阜 273165，曲阜师范大学物理系!曲阜 273165 |
| |
| 基金项目： | 山东省自然科学基金!（批准号：Q99A04），曲阜师范大学校级项目资助课题。 |
| |
| 摘 要： | 利用重正化群变换方法，在一种特殊钻石型等级晶格上研究了有外场存在时Ｇａｕｓｓｉａｎ模型的临界性质。结果表明：与一般的钻石型等级晶格上的结果相比，在临界点点上，格点近邻相互作用和外人有相同的形式，但临界指数不相同，这表明这两种晶格的铁磁性质属于不同的普适类。
|
| 关 键 词： | 外磁场 钻石型等级晶格 临界性质 高斯模型 |
CRITICAL BEHAVIOR OF THE GAUSSIAN MODEL ON A DIAMOND-TYPE HIERARCHICAL LATTICE IN AN EXTERNAL MAGNETIC FIELD |
| |
| KONG Xiang-mu,ZHANG Hong-xiang,FAN Xi-hui.CRITICAL BEHAVIOR OF THE GAUSSIAN MODEL ON A DIAMOND-TYPE HIERARCHICAL LATTICE IN AN EXTERNAL MAGNETIC FIELD[J].Journal of Qingdao University(Natural Science Edition),2000,13(3):65-67. |
| |
| Authors: | KONG Xiang-mu ZHANG Hong-xiang FAN Xi-hui |
| |
| Abstract: | Using the renormalization group method, the critical behavior of the Gaussian model is studied on a particular diamond-type hierarchical (or DH) lattice in an external magnetic field. It is found that the nearest-neighbor interaction and the magnetic field at the critical points are both identical with the results of this model on a family of the DH lattices; but the critical exponents are different from those ones on a family of the DH lattices. The result implies that the magnetic property of this model do not belong to a same universal class on the two kinds of lattices. |
| |
| Keywords: | Gaussian model magnetic field diamond-type hierarchical lattice enormalization group critical behavior |
| 本文献已被 CNKI 维普 等数据库收录！ |
