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- W2255633114 abstract "Introducing collective variables, a collective description of nuclear surface oscillations has been developed with the first-quantized language, contrary to the second-quantized one in Sunakawa's approach for a Bose system. It overcomes difficulties remaining in the traditional theories of nuclear collective motions: Collective momenta are not exact canonically conjugate to collective coordinates and are not independent. On the contrary to such a description, Tomonaga first gave the basic idea to approach elementary excitations in a one-dimensional Fermi system. The Sunakawa's approach for a Fermi system is also expected to work well for such a problem. In this paper, on the isospin space, we define a density operator and further following Tomonaga, introduce a collective momentum. We propose an exact canonically momenta approach to a one-dimensional neutron–proton (N–P) system under the use of the Grassmann variables." @default.
- W2255633114 created "2016-06-24" @default.
- W2255633114 creator A5001666542 @default.
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- W2255633114 date "2015-06-01" @default.
- W2255633114 modified "2023-10-18" @default.
- W2255633114 title "Exact canonically conjugate momenta approach to a one-dimensional neutron–proton system, I" @default.
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- W2255633114 doi "https://doi.org/10.1142/s0218301315500457" @default.
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