Symmetries In Constrained Canonical Systes pdf epub mobi txt 电子书 下载 2024


Symmetries In Constrained Canonical Systes

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Li Ziping 编
科学出版社
2002-12-01
0
88.00元
9787030095824

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发表于2024-11-10

Symmetries In Constrained Canonical Systes epub 下载 mobi 下载 pdf 下载 txt 电子书 下载 2024

Symmetries In Constrained Canonical Systes epub 下载 mobi 下载 pdf 下载 txt 电子书 下载 2024

Symmetries In Constrained Canonical Systes pdf epub mobi txt 电子书 下载 2024



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《Symmetries In Constrained Canonical Systes》主要内容:A dynamical system described by a singular Lagrangian is subject to some in- herent phase space constraints and is called a constrained canonical system (or con- strained Hamiltonian system). Gauge field theories (for example, QED, QFD, QCD, Supergravity, Superstring) belong to this category. These theories now dominate particle physics. The theory of a constrained canonical system can also be applied to the theories of condensed matter and some other research area (for ex- ample, the quantum field theories of anyons). The theories of a constrained canon- ical system play a fundamental role in modern field theories. The quantization of a constrained canonical system with a singular Lagrangian remains one of the key problems of quantum field theory and is being intensively discussed in the litera- ture. Symmetry is now a fundamental concept in modern physics. As it is well known, the discussion of symmetry properties of a system is usually based on the examination of the Lagranigan in configuration space. In quantum theory, the phase-space path integral is more fundamental than the configuration-space path integral, the latterprovides for a Hamiltonian quadratic in canonical momenta, whereas the former can be applied to an arbitrary Hamiltonian. Thus, the phase- space form of the path integral is a necessary precursor to the configuration-space form of the path integral. Therefore, the investigation of symmetry properties of a system in phase space has a basic sense in quantum theories, which can be applied to more general cases

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