Method of collective degrees of freedom in spin-coherent-state path integral
نویسندگان
چکیده
منابع مشابه
Method of Collective Degrees of Freedom in Spin Coherent State Path Integral
We present a detailed field theoretic description of those collective degrees of freedom (CDF) which are relevant to study macroscopic quantum dynamics of a quasi-one-dimensional ferromagnetic domain wall. We apply spin coherent state path integral (SCSPI) in the proper discrete time formalism (a) to extract the relevant CDF’s, namely, the center position and the chirality of the domain wall, w...
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It is pointed out that there are some fundamental difficulties with the frequently used continuous-time formalism of the spin-coherent-state path integral. They arise already in a single-spin system and at the level of the ”classical action” not to speak of fluctuations around the ”classical path”. Similar difficulties turn out to be present in the case of the (boson-)coherentstate path integra...
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ژورنال
عنوان ژورنال: Physics of Atomic Nuclei
سال: 2001
ISSN: 1063-7788,1562-692X
DOI: 10.1134/1.1432927