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	Spectral Theorem of Many-Body Green's Functions When Complex Eigenvalues Appear
	Wang Huai-Yu
	2010-10-12 ; 2010-10-12
关键词	spectral theorem many-body Green's functions correlation functions complex eigenvalues THIN FERROMAGNETIC-FILMS HEISENBERG FILMS MAGNETIC REORIENTATION ANISOTROPY FIELD Physics, Multidisciplinary
中文摘要	In this paper, an extended spectral theorem is given, which enables one to calculate the correlation functions when complex eigenvalues appear. To do so, a Fourier transformation with a complex argument is utilized. We treat all the Matsbara frequencies, including Fermionic and Bosonic frequencies, on an equal footing. It is pointed out that when complex eigenvalues appear, the dissipation of a system cannot simply be ascribed to the pure imaginary part of the Green function. Therefore, the use of the name fluctuation-dissipation theorem should be careful.
语种	英语 ; 英语
出版者	IOP PUBLISHING LTD ; BRISTOL ; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81548]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Huai-Yu. Spectral Theorem of Many-Body Green's Functions When Complex Eigenvalues Appear[J],2010, 2010.
APA	Wang Huai-Yu.(2010).Spectral Theorem of Many-Body Green's Functions When Complex Eigenvalues Appear..
MLA	Wang Huai-Yu."Spectral Theorem of Many-Body Green's Functions When Complex Eigenvalues Appear".(2010).

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