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seen Mar 3 at 21:07

Nov
19
awarded  Yearling
Sep
29
awarded  Pundit
Sep
2
awarded  Nice Answer
Mar
2
comment Correlation Function of ground state; Physical Meaning
You already found the answer yourself!
Mar
2
comment Energy difference between symmetric and antisymmetric wavefunctions
There is some confusion in your question. Either you mean a one-particle system that is symmetric w.r.t. some point or hypersurface, or you mean a multi-particle state (in Fock space), built out of one-particle states in a symmetric/antisymmetric way. In that case you're describing not one, but several particles.
Feb
26
comment Partition Function of a three state particle system
Look, just make a minimum effort at answering the question - that's standard homework policy here.
Feb
25
comment Intrinsic parity of particle and antiparticle with spin zero
Just a remark, but your answer assumes that we're dealing with a Klein-Gordon field. OP's question is about a general scalar particle.
Feb
17
comment Does $c = 0$ implies that the theory is “empty”?
No, here I define $c$ as follows: $\langle T(x) T(0) \rangle = c / (x^2)^d$ (omitting indices). Maybe you need an extra factor of $1/2$ to agree with other people's conventions.
Feb
17
answered Does $c = 0$ implies that the theory is “empty”?
Feb
16
comment Normal to the Hypersurfaces
The equation $n^a n^b n^c = 0$ is definitely false. It can only be true if $n^a = 0.$ Maybe you mean $\epsilon_{abcd} n^a n^b n^c = 0$ which is true, but for trivial reasons.
Feb
14
awarded  Nice Answer
Feb
14
answered If the quarks in a neutron are (up,down,down), why isn't it negatively charged?
Feb
9
comment Use of 'complete' as in 'complete set of states' or 'complete basis'
I've never heard someone use the word basis in that Hamel sense (in physics). It seems unnatural. Take some Hamel basis $\{ | \psi_n\rangle \}$ and assume that the $| \psi_n\rangle$ have unit norm. Now what about the state $\sum e^{-n} | \psi_n \rangle$?
Feb
2
suggested suggested edit on Closed formula for product of gamma matrices
Feb
2
comment Closed formula for product of gamma matrices
What have you tried so far? There's no magic in play here.
Jan
30
comment Do primary fields (in a CFT) satisfy the wave equation?
You didn't understand my equation, so please don't downvote because of ignorance. The full propagator is obviously $G(z,\bar{z}) = z^{-2h} \bar{z}^{-2\bar{h}}.$ This is really elementary CFT...
Jan
30
answered Do primary fields (in a CFT) satisfy the wave equation?
Jan
25
answered Energy spectrum, mass spectrum, and mass gap
Jan
24
comment Are atoms getting weaker?
For sure the Planck length will turn up in your calculation; my point is that any correction coming from from the expansion of the universe should actually depend on the rate of expansion (and maybe some other cosmological data).
Jan
24
comment Are atoms getting weaker?
The argument that any effect would be of the order of the Planck scale seems flawed, since for the expansion of the universe the relevant quantity is the Hubble time, which isn't equal to one in natural units.