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Apr
27
comment Are the path integral formalism and the operator formalism inequivalent?
@AccidentalFourierTransform - Yes, that is true. This automatically happens when integrating over constrained surfaces. I did assume the simplest case of unconstrained variables.
Apr
27
comment Why is $\text{R}$ resistance in $\text{V=IR}$?
The proportionality constant given by $\frac{V}{I}$ is defined as the resistance. You can't ask why a definition is true.
Apr
27
reviewed Close Is the equipartition theorem derivable from more basic principles
Apr
27
reviewed Close What are the effects of relativity on the universe itself?
Apr
27
reviewed Close Can we reverse the direction of a ballistic missiles
Apr
27
reviewed Close Neutrino interaction probability
Apr
27
reviewed Close Advantages of Ion Trap over Nuclear Magnetic Reasonance Quantum Computers
Apr
27
reviewed Close Particle-antiparticle spatial arrangement?
Apr
27
reviewed Close Representation of $P_\mu$ on a field
Apr
27
reviewed Leave Open Klein-Gordon field quantization
Apr
27
reviewed Close How do you state the quantized radial acceleration of an orbiting electron?
Apr
27
reviewed Close Does the goldstone field really disappear?
Apr
27
comment Using symmetry to determine a hydrogen electron's decay route from $|300\rangle$ to $|100\rangle$
You need to read up on the Wigner-Eckart Theorem.
Apr
27
answered Differential cross-section for a 2-particle process in the LAB frame
Apr
26
answered Classical Klein-Gordon theory is a free relativistic theory
Apr
26
answered Tensor products of Hilberts spaces: definition of outer products and commutators
Apr
26
comment Are the path integral formalism and the operator formalism inequivalent?
The fields $\phi$ that enter the path integral formalism are required to be the canonical coordinates. This you can see by matching the way the path integral formalism is "derived" from the canonical formalism. For all such fields, $[\phi,\pi]$ will always be a $c$-number.
Apr
26
answered Using $\sqrt{-g}$ in integrals of proper volume
Apr
26
revised How do we know the Schwarzschild solution contains an object of mass $M$?
deleted 177 characters in body
Apr
26
answered How do we know the Schwarzschild solution contains an object of mass $M$?