Hidden antiunitary symmetry behind “accidental” degeneracy and its protection of degeneracy
Hidden antiunitary symmetry behind “accidental” degeneracy and its protection of degeneracy
复制标题
“偶然”简并背后隐藏的反酉对称性及其对简并的保护
DOI:
10.1007/s11467-017-0712-8
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发表时间:
2017-07
期刊:
影响因子:
--
通讯作者:
Wei Chen
中科院分区:
文献类型:
--
作者:
Jing-Min Hou;Wei Chen
In quantum mechanics, accidental degeneracy refers to energy degeneracy that occurs coincidentally, without any protection by symmetry. Here, we prove a theorem stating that any two-fold degeneracy (accidental or not) in a quantum system is protected by a novel hidden symmetry, which can be expressed by an antiunitary operator with its square being -1. In this sense, the so-called accidental degeneracy is not really accidental, and this actually implies a hidden antiunitary symmetry.
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DOI:
10.1142/9789814542319_0009
发表时间:
1988-12
期刊:
--
影响因子:
--
作者:
V. Fock
通讯作者:
V. Fock
影响因子:
6.7
作者:
S. P. Alliluev
通讯作者:
S. P. Alliluev
影响因子:
0.9
作者:
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通讯作者:
H. McIntosh
DOI:
10.1142/9789812795762_0002
发表时间:
2000-03
期刊:
--
影响因子:
--
作者:
J. Neumann;E. Wigner
通讯作者:
J. Neumann;E. Wigner
DOI:
10.1007/bf02726596
发表时间:
1974-08
期刊:
Il Nuovo Cimento B (1971-1996)
影响因子:
--
作者:
J. Smith
通讯作者:
J. Smith