Commutator and Anticommutator Green's Functions, Zero-Frequency Poles, and Long-Time Correlations
1967 ◽
Vol 91
(2)
◽
pp. 505-506
◽
2002 ◽
Vol 149
(1)
◽
pp. 57-63
◽
2014 ◽
Vol 19
(3)
◽
pp. 301-334
◽
2018 ◽
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