measurables in field theories
27 Mar 2024Is the metric \(g_{\mu\nu}\) in general relativity directly measurable? What about its corresponding quantities \(A^\mu\) in electrodynamics or \(\Phi\) in classical gravity?
Is the metric \(g_{\mu\nu}\) in general relativity directly measurable? What about its corresponding quantities \(A^\mu\) in electrodynamics or \(\Phi\) in classical gravity?