机构:
Australian Natl Univ, Res Sch Phys Sci & Engn, Dept Math Appl, Canberra, ACT 0200, AustraliaAustralian Natl Univ, Res Sch Phys Sci & Engn, Dept Math Appl, Canberra, ACT 0200, Australia
Stewart, AM
[1
]
机构:
[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Dept Math Appl, Canberra, ACT 0200, Australia
来源:
AUSTRALIAN JOURNAL OF PHYSICS
|
1997年
/
50卷
/
06期
关键词:
D O I:
10.1071/P97024
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
An introduction is given to features of gauge invariance in classical and quantum mechanics that are of importance for magnetism in condensed matter systems. A version of quantum mechanics is described in which full electromagnetic gauge arbitrariness is displayed explicitly at every stage. The division of orbital magnetism into paramagnetism and diamagnetism is examined and it is shown that only by treating both of these on an equal footing can a gauge invariant treatment of magnetism be constructed.