User tomdodd4598

17 votes

4 answers

902 views

Why would GR's prediction for galaxy rotation curves differ from Newtonian gravity's in spite of prevailing intuition from dimensional analysis?

asked Aug 10, 2022 at 12:47

7 votes

1 answer

942 views

Is the hierarchy problem definitely a "problem"?

asked Feb 26, 2021 at 20:13

6 votes

3 answers

264 views

How did Ernest Sternglass’ phenomenologically incorrect model of the neutral pion predict its mass and lifetime so accurately?

asked Jan 9, 2022 at 21:01

5 votes

0 answers

277 views

QFT: Normal Ordering Interaction Hamiltonian Before Using Wick's Theorem

asked Feb 18, 2022 at 12:45

5 votes

1 answer

241 views

Questions about "A Quadrillion Standard Models from F-theory"

asked Oct 17, 2022 at 3:14

5 votes

0 answers

218 views

Embedding $h = \pm 2$ gravitons into the $\left(1,1\right)$ Lorentz representation

asked Jan 10, 2023 at 14:13

4 votes

0 answers

195 views

Is this general symmetrisation of the canonical energy-momentum tensor correct?

asked Jan 22, 2022 at 19:29

3 votes

1 answer

266 views

Argument for existence of normal coordinates at a given point

asked Jul 6, 2020 at 1:08

3 votes

1 answer

533 views

Confusion about $U(1)$ representations and charge quantisation in the context of gauge theory

asked Dec 3, 2021 at 8:52

3 votes

1 answer

4k views

What are the $U(1)$ representations and their generators?

asked Dec 3, 2021 at 22:31

3 votes

0 answers

147 views

Reasoning for projective representations of Lorentz group in the context of QFT

asked Dec 10, 2021 at 13:51

3 votes

1 answer

118 views

Final steps in obtaining the $(m,n)$-labelled finite-dimensional irreps of the restricted Lorentz group

asked Dec 11, 2021 at 17:07

3 votes

1 answer

119 views

Confusion about relationship between $\mathfrak{so}^+(1,3)$ and $\mathfrak{su}(2) \oplus \mathfrak{su}(2)$

asked Dec 11, 2021 at 20:40

3 votes

1 answer

172 views

Argument that the massless bosonic string describes gravitation

asked Oct 11, 2022 at 12:51

3 votes

1 answer

204 views

Branes in Closed Bosonic String Theory

asked Oct 16, 2022 at 16:10

3 votes

1 answer

76 views

Black hole metric of reflected shell of incoming light

asked Aug 12, 2022 at 20:54

2 votes

1 answer

130 views

Extra degrees of freedom in toy spontaneous symmetry breaking model?

asked Aug 30, 2022 at 7:52

2 votes

2 answers

183 views

Solving EOMs for massless particle in a potential

asked Sep 8, 2022 at 23:07

2 votes

1 answer

124 views

Are magnetic charges compulsory in string theory?

asked Oct 18, 2022 at 4:54

2 votes

2 answers

137 views

Which finite-dimensional representations of the Lorentz group do $p$-forms correspond to?

asked Jan 4, 2023 at 11:44

2 votes

0 answers

119 views

Kaluza-Klein compactifications with ${\cal N}=1$ supersymmetry

asked Jan 6, 2023 at 10:52

2 votes

0 answers

404 views

QED - running of coupling (beta function)

asked Sep 8, 2020 at 17:14

2 votes

1 answer

196 views

Trouble deriving the symmetrised canonical energy-momentum tensor for the Dirac Lagrangian

asked Jan 25, 2022 at 0:31

2 votes

1 answer

100 views

Simplification of nested time-ordered products

asked Feb 20, 2022 at 5:17

1 vote

0 answers

142 views

Confusion about Weinberg's short argument for the existence of antiparticles

asked Jan 28, 2022 at 0:50

1 vote

3 answers

257 views

For a generic two-state quantum system, are there interpretations for the observables corresponding to all Hermitian operators?

asked Jan 16, 2022 at 21:56

1 vote

1 answer

335 views

Lagrangian of massless particle in a potential

asked Jul 18, 2021 at 1:30

1 vote

1 answer

621 views

$φ^3$ theory: three-point, one-loop diagram ($D=4$)

asked Feb 25, 2021 at 20:07

1 vote

0 answers

149 views

Renormalisation scale and running of the $φ^3$ coupling constant (cut-off scheme)

asked Jul 15, 2020 at 18:05

1 vote

1 answer

367 views

Was Dirac's discovery of the Dirac equation by requiring a positive-definite probability density $j^0$ an unjustified coincidence?

asked Dec 23, 2021 at 10:15

Stack Exchange Network

33 Questions

Why would GR's prediction for galaxy rotation curves differ from Newtonian gravity's in spite of prevailing intuition from dimensional analysis?

Is the hierarchy problem definitely a "problem"?

How did Ernest Sternglass’ phenomenologically incorrect model of the neutral pion predict its mass and lifetime so accurately?

QFT: Normal Ordering Interaction Hamiltonian Before Using Wick's Theorem

Questions about "A Quadrillion Standard Models from F-theory"

Embedding $h = \pm 2$ gravitons into the $\left(1,1\right)$ Lorentz representation

Is this general symmetrisation of the canonical energy-momentum tensor correct?

Argument for existence of normal coordinates at a given point

Confusion about $U(1)$ representations and charge quantisation in the context of gauge theory

What are the $U(1)$ representations and their generators?

Reasoning for projective representations of Lorentz group in the context of QFT

Final steps in obtaining the $(m,n)$-labelled finite-dimensional irreps of the restricted Lorentz group

Confusion about relationship between $\mathfrak{so}^+(1,3)$ and $\mathfrak{su}(2) \oplus \mathfrak{su}(2)$

Argument that the massless bosonic string describes gravitation

Branes in Closed Bosonic String Theory

Black hole metric of reflected shell of incoming light

Extra degrees of freedom in toy spontaneous symmetry breaking model?

Solving EOMs for massless particle in a potential

Are magnetic charges compulsory in string theory?

Which finite-dimensional representations of the Lorentz group do $p$-forms correspond to?

Kaluza-Klein compactifications with ${\cal N}=1$ supersymmetry

QED - running of coupling (beta function)

Trouble deriving the symmetrised canonical energy-momentum tensor for the Dirac Lagrangian

Simplification of nested time-ordered products

Confusion about Weinberg's short argument for the existence of antiparticles

For a generic two-state quantum system, are there interpretations for the observables corresponding to all Hermitian operators?

Lagrangian of massless particle in a potential

$φ^3$ theory: three-point, one-loop diagram ($D=4$)

Renormalisation scale and running of the $φ^3$ coupling constant (cut-off scheme)

Was Dirac's discovery of the Dirac equation by requiring a positive-definite probability density $j^0$ an unjustified coincidence?