Symmetry and Equivalence
Symmetry and Equivalence
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对称性和等价性
DOI：
10.1093/oxfordhb/9780195392043.013.0010
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
G. Belot
中科院分区：
文献类型：
--
作者：
G. Belot
本文关注两个概念之间的关系：一个理论的两个解或模型通过理论的对称性联系起来，另一个是物理等价的解或模型（在相对于任何合理解释同样适合或不适合代表任何给定情况的意义上）。最近有许多作者讨论了这种关系，有些人持乐观的观点，认为有一个理论的对称性的适当概念，相对于这个概念，这两个概念是一致的，另一些人持悲观的观点，认为没有这样的概念。本文得出了一个谨慎悲观的结论。
This paper is concerned with the relation between two notions: that of two solutions or models of a theory being related by a symmetry of the theory and that of solutions or models being physically equivalent (in the sense of being equally well- or ill-suited to represent any given situation, relative to any reasonable interpretation). A number of authors have recently discussed this relation, some taking an optimistic view, on which there is a suitable concept of the symmetry of a theory relative to which these two notions coincide, others taking a pessimistic view, on which there is no such concept. The present paper arrives at a cautiously pessimistic conclusion.