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2
questions
2
votes
1
answer
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Do we use any other kinds of affine connections in physics apart from the Levi-Civita connection?
When studying General Relativity, I learned that we use the Levi-Civita connection, i.e. torsion-less(or just symmetric) and compatible with the metric(the covariant derivative of the metric is equal ...
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7
votes
1
answer
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Are there any additional fundamentals of physics in addition to space-time, energy, mass, and charge?
What do you consider the fundamental quantities in physics to be? By fundamentals, I mean quantities that cannot be described by a combination of other quantities. Fundamentals are things that just ...
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