Aboveboard
发表于 2025-3-25 07:11:25
The Goldstone Theoreminuous symmetry there corresponds a massless mode, i.e. a free wave. The quantum version of such a statement has been turned into a theorem, whereas, as far as we know, no analogous theorem has been proved for classical (infinite- dimensional) systems and the standard accounts seem to rely on heuristic arguments.
不能约
发表于 2025-3-25 08:47:57
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讲个故事逗他
发表于 2025-3-25 12:34:32
Examplesan also be interpreted as a non-linear generalization of the wave equation. The interest of the model is that, even at the classical level, it has stable solutions with a possible particle interpretation.
Harass
发表于 2025-3-25 19:33:10
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Consensus
发表于 2025-3-25 23:54:14
Examplesan also be interpreted as a non-linear generalization of the wave equation. The interest of the model is that, even at the classical level, it has stable solutions with a possible particle interpretation.
不幸的人
发表于 2025-3-26 00:33:50
Symmetries of a Classical SystemThe realization of symmetries in physical systems has proven to be of help in the description of physical phenomena: it makes it possible to relate the behaviour of similar systems and therefore it leads to a great simplification of the mathematical description of Nature.
dissent
发表于 2025-3-26 04:50:33
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Chauvinistic
发表于 2025-3-26 11:00:41
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人类
发表于 2025-3-26 14:30:55
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sacrum
发表于 2025-3-26 20:02:30
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