User InertialObserver

32 votes

4 answers

3k views

What precisely is a classical spin-1/2 particle?

asked Dec 28, 2018 at 22:20

13 votes

3 answers

2k views

Are Maxwell's equations "physical"?

asked Jan 5, 2019 at 19:30

7 votes

2 answers

627 views

How can we have a quark condensate without a quark potential?

asked Mar 16, 2019 at 23:46

6 votes

3 answers

764 views

$(c^{\mu}\partial_{\mu}-m)\phi(x)=0$ not Lorentz-invariant?

asked Jun 16, 2017 at 13:45

6 votes

0 answers

376 views

Upper bounds on phase space momenta

asked Mar 1, 2021 at 20:18

4 votes

1 answer

68 views

Must a field approach one of its vacua to have finite energy?

asked Jul 6, 2020 at 17:05

4 votes

1 answer

252 views

Why is Lattice QCD done in Euclidian 4-space?

asked Dec 19, 2018 at 8:04

2 votes

2 answers

154 views

Rigorous-ish mathematical meaning of having two total differentials in the denominator

asked Aug 21, 2018 at 20:23

2 votes

1 answer

393 views

Contraction between scalar field and momentum eigenstate

asked May 30, 2018 at 1:51

2 votes

0 answers

85 views

Global $U(1)$ Symmetry in GSW Model

asked Feb 20, 2019 at 1:55

2 votes

1 answer

565 views

Why do we have redundant degrees of freedom?

asked Jul 19, 2019 at 18:40

1 vote

0 answers

417 views

Feynman rules for derivative couplings with identical particles

asked Dec 19, 2020 at 20:57

1 vote

0 answers

247 views

Clever phase space parametrization of $n$-body processes

asked Feb 19, 2021 at 16:50

1 vote

0 answers

127 views

$n$-Body Phase Space Recurrence Relation

asked Feb 23, 2021 at 17:42

1 vote

2 answers

802 views

The way momentum space integrals tend to infinity

asked Jul 9, 2018 at 2:49

1 vote

0 answers

76 views

Showing that $U(1)_R$ charge is non-anomalous in SUSY QCD when $r=\frac{F-N}{F}$

asked Aug 11, 2018 at 0:24

1 vote

1 answer

107 views

Interpretation of $\Psi(x)|0\rangle$

asked May 21, 2018 at 3:27

1 vote

0 answers

132 views

What exactly are we doing when we "invent" Feynman Diagrams?

asked May 22, 2018 at 22:40

1 vote

1 answer

79 views

Show that $v_iw_j + v_j w_i$ is a representation of $SU(2)$

asked Nov 9, 2017 at 23:33

1 vote

1 answer

139 views

What do the points on a Dalitz plot represent

asked Sep 21, 2018 at 2:02

1 vote

2 answers

1k views

Irradiated Film Negatives from Chernobyl

asked May 28, 2019 at 6:23

0 votes

0 answers

141 views

Compactness and Quantization

asked Jan 15, 2019 at 1:24

0 votes

0 answers

113 views

Understanding dual tangent space using the definition $T_p \to \mathbb{R}$?

asked Sep 9, 2018 at 2:18

0 votes

1 answer

497 views

Time Evolution of Asymptotic Free States in QFT

asked May 19, 2018 at 3:04

0 votes

2 answers

105 views

Exact solution to 1D SHO + $(a S_+ + a^{\dagger}S_-)$ [closed]

asked Sep 4, 2017 at 2:27

0 votes

1 answer

96 views

Finding $J^{PC}$ for multiparticle final state

asked Jun 14, 2021 at 17:30

Stack Exchange Network

26 Questions

What precisely is a classical spin-1/2 particle?

Are Maxwell's equations "physical"?

How can we have a quark condensate without a quark potential?

$(c^{\mu}\partial_{\mu}-m)\phi(x)=0$ not Lorentz-invariant?

Upper bounds on phase space momenta

Must a field approach one of its vacua to have finite energy?

Why is Lattice QCD done in Euclidian 4-space?

Rigorous-ish mathematical meaning of having two total differentials in the denominator

Contraction between scalar field and momentum eigenstate

Global $U(1)$ Symmetry in GSW Model

Why do we have redundant degrees of freedom?

Feynman rules for derivative couplings with identical particles

Clever phase space parametrization of $n$-body processes

$n$-Body Phase Space Recurrence Relation

The way momentum space integrals tend to infinity

Showing that $U(1)_R$ charge is non-anomalous in SUSY QCD when $r=\frac{F-N}{F}$

Interpretation of $\Psi(x)|0\rangle$

What exactly are we doing when we "invent" Feynman Diagrams?

Show that $v_iw_j + v_j w_i$ is a representation of $SU(2)$

What do the points on a Dalitz plot represent

Irradiated Film Negatives from Chernobyl

Compactness and Quantization

Understanding dual tangent space using the definition $T_p \to \mathbb{R}$?

Time Evolution of Asymptotic Free States in QFT

Exact solution to 1D SHO + $(a S_+ + a^{\dagger}S_-)$ [closed]

Finding $J^{PC}$ for multiparticle final state