Generalization of Hamiltonian mechanics to a three-dimensional phase space
Generalization of Hamiltonian mechanics to a three-dimensional phase space
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哈密顿力学推广到三维相空间
DOI:
10.1093/ptep/ptab066
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发表时间:
2021
影响因子:
3.5
通讯作者:
Sato Naoki
中科院分区:
文献类型:
--
作者:
Sato Naoki;Qu Zhisong;Pfefferle David;Dewar Robert L.;Sato Naoki;Sato Naoki
Classical Hamiltonian mechanics is realized by the action of a Poisson bracket on a Hamiltonian function. The Hamiltonian function is a constant of motion (the energy) of the system. The properties of the Poisson bracket are encapsulated in the symplectic-form, a closed second-order differential form. Due to closure, the symplectic-form is preserved by the Hamiltonian flow, and it assigns an invariant (Liouville) measure on the phase space through the Lie–Darboux theorem. In this paper we propose a generalization of classical Hamiltonian mechanics to a three-dimensional phase space: the classical Poisson bracket is replaced with a generalized Poisson bracket acting on a pair of Hamiltonian functions, while the symplectic-form is replaced by a symplectic-form. We show that, using the closure of the symplectic-form, a result analogous to the classical Lie–Darboux theorem holds: locally, there exist smooth coordinates such that the components of the symplectic-form are constants, and the phase space is endowed with a preserved volume element. Furthermore, as in the classical theory, the Jacobi identity for the generalized Poisson bracket mathematically expresses the closure of the associated symplectic form. As a consequence, constant skew-symmetric third-order contravariant tensors always define generalized Poisson brackets. This is in contrast with generalizations of Hamiltonian mechanics postulating the fundamental identity as replacement for the Jacobi identity. In particular, we find that the fundamental identity represents a stronger requirement than the closure of the symplectic-form.
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影响因子:
2.4
作者:
G. Dito;M. Flato;D. Sternheimer;L. Takhtajan
通讯作者:
L. Takhtajan
影响因子:
1.2
作者:
R. Chatterjee;L. Takhtajan
通讯作者:
R. Chatterjee;L. Takhtajan
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
Iguro Syuhei;Omura Yuji;Takeuchi Michihisa;松尾 泰
通讯作者:
松尾 泰
DOI:
10.1073/pnas.1421798112
发表时间:
2015-02-17
影响因子:
11.1
作者:
Moore, Calvin C.
通讯作者:
Moore, Calvin C.
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
A. Bloch;P. Morrison;T. Ratiu
通讯作者:
T. Ratiu