the defination of field from physicist seems not strick

送交者: blobfish 于 2011-04-03, 11:26:00:

回答: Gauge Theories -2.4 Fields and Quantum Fields (2) 由 suprathinker 于 2011-04-03, 09:41:13:

From algebra, field is defined from group,
i.e., a set F that is a commutative group with respect to two compatible operations, addition and multiplication

所有跟贴:

This field (phys) is not your field (math). - suprathinker (93 bytes) 2011-04-03, 11:39:42 (571619)
- so the annihilation and creation operators form two discontinuous group - blobfish (23 bytes) 2011-04-04, 11:19:59 (571805)
  - two discrete groups: - and + with a step of Planch constant (无内容) - blobfish (0 bytes) 2011-04-04, 11:22:47 (571808)

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