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 Yearling
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Nov
6
comment Does “sum over all paths” in the path integral imply “sum over all paths” in momentum space when one Fourier-transforms?
To your reply to the question in the answer: indeed, I messed up with notation. Still, what you wrote, doesn't address the interpretation.
Nov
6
comment Does “sum over all paths” in the path integral imply “sum over all paths” in momentum space when one Fourier-transforms?
@Javier The Jacobian you can find it by writing the $\phi(x)$ as the Fourier transform of $\tilde\phi(p)$ and deriving functionally w.r.t. say $\tilde\phi(q)$. You get only $(2\pi)$-factors times a phase factor which cancels out when you take the determinant. Then you get that the Jacobian is a constant, what I wrote.
Nov
6
revised Does “sum over all paths” in the path integral imply “sum over all paths” in momentum space when one Fourier-transforms?
deleted 51 characters in body
Nov
5
asked Does “sum over all paths” in the path integral imply “sum over all paths” in momentum space when one Fourier-transforms?
Jun
4
awarded  Yearling
Nov
11
comment Why is the Poynting Vector Symmetric in E and H?
@joshphysics Sorry it took so long to answer. You're right, my answer doesn't address the question: I'm not used to electrodynamics out of vacuum. So I'll erase it.
Oct
16
awarded  Notable Question
Jul
23
awarded  Good Question
Jul
2
awarded  Curious
Jun
5
revised Why is the Poynting Vector Symmetric in E and H?
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Jun
5
answered Why is the Poynting Vector Symmetric in E and H?
Jun
4
awarded  Yearling
Jun
3
awarded  Nice Question
May
18
comment Books to understand what's theoretical physics about
Go and talk and interview a theoretical physicist, then a mathematician; compare.
Mar
26
revised Relation between solutions to Yang-Baxter equations, integrability and exact solvability?
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Mar
26
asked Relation between solutions to Yang-Baxter equations, integrability and exact solvability?
Mar
9
suggested rejected edit on Tensor product of Hadamard operators
Mar
9
revised Tensor product of Hadamard operators
fine tuning :)
Mar
9
suggested approved edit on Tensor product of Hadamard operators
Mar
7
revised In what sense is the renormalization group equation a group?
added 338 characters in body