General-Relativistic Covariance
General-Relativistic Covariance
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DOI:
10.1007/s10701-019-00256-0
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发表时间:
2020-04-01
影响因子:
1.5
通讯作者:
Dewar, Neil
中科院分区:
文献类型:
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作者:
Dewar, Neil
This is an essay about general covariance, and what it says (or doesn't say) about spacetime structure. After outlining a version of the dynamical approach to spacetime theories, and how it struggles to deal with generally covariant theories, I argue that we should think about the symmetry structure of spacetime rather differently in generally-covariant theories compared to non-generally-covariant theories: namely, as a form of internal rather than external symmetry structure.