User Gravity the Cavity

8 votes

3 answers

443 views

QFT vacuum and the zero point energy

asked Jan 31, 2022 at 12:53

6 votes

3 answers

1k views

Boundedness of a Hamiltonian and when does a Hamiltonian have a spectrum?

asked Nov 28, 2022 at 12:37

6 votes

3 answers

1k views

Different Hilbert spaces in quantum mechanics

asked Sep 26, 2020 at 21:25

5 votes

1 answer

352 views

When does QFT perturbation theory stop being valid?

asked Mar 22, 2021 at 13:46

4 votes

1 answer

213 views

Standard model notation on doublets

asked Mar 6, 2021 at 23:27

4 votes

1 answer

164 views

Wigner classification of particles vs generic Hamiltonian spectrum

asked Jul 29, 2021 at 20:45

4 votes

2 answers

4k views

Convective derivative vs total derivative

asked Apr 19, 2019 at 12:08

4 votes

2 answers

737 views

Local phase invariance of our lagrangian

asked Nov 15, 2019 at 0:19

3 votes

1 answer

200 views

The interpretation of the quantum field

asked Jul 22, 2021 at 13:10

2 votes

1 answer

123 views

Defining the exterior derivative with torsion [duplicate]

asked May 3, 2021 at 12:21

2 votes

0 answers

73 views

Classification of couplings in continuum renormalisation

asked Sep 6, 2021 at 20:11

2 votes

1 answer

226 views

Link between $\mathfrak{su}(2)$ decomposition and Lorentz Lie algebra

asked Feb 5, 2021 at 14:25

2 votes

1 answer

178 views

Fields and Path integrals in the axiomatic Wightman setting

asked Dec 23, 2021 at 5:26

1 vote

0 answers

68 views

Unstable particles as Hilbert space states

asked Jul 5, 2022 at 17:09

1 vote

0 answers

101 views

Second quantization in QFT

asked Jan 7, 2022 at 21:35

1 vote

2 answers

138 views

Different definitions of configuration space

asked Feb 16, 2021 at 23:45

1 vote

1 answer

179 views

Finding the form of an Infinitesimal Lorentz matrix

asked Jan 5, 2021 at 19:20

1 vote

2 answers

677 views

Time dependence of ladder operators in QFT

asked Jul 17, 2020 at 15:15

1 vote

1 answer

671 views

Fermion LSZ reduction / Greens function

asked Aug 6, 2020 at 21:35

1 vote

1 answer

197 views

LSZ derivation and contact terms [closed]

asked Aug 7, 2020 at 22:22

1 vote

1 answer

135 views

Different adjoints in particle physics

asked Oct 22, 2021 at 21:16

1 vote

1 answer

95 views

Quark model wavefunction separability

asked Nov 14, 2021 at 2:30

1 vote

1 answer

296 views

SUSY and van der Waerden spinor notation

asked Jul 22, 2021 at 12:59

0 votes

2 answers

56 views

Literature request: Non-compact supported gauge transformations

asked Nov 18, 2021 at 13:01

0 votes

0 answers

73 views

Distributions in QFT

asked Dec 27, 2021 at 21:48

Stack Exchange Network

25 Questions

QFT vacuum and the zero point energy

Boundedness of a Hamiltonian and when does a Hamiltonian have a spectrum?

Different Hilbert spaces in quantum mechanics

When does QFT perturbation theory stop being valid?

Standard model notation on doublets

Wigner classification of particles vs generic Hamiltonian spectrum

Convective derivative vs total derivative

Local phase invariance of our lagrangian

The interpretation of the quantum field

Defining the exterior derivative with torsion [duplicate]

Classification of couplings in continuum renormalisation

Link between $\mathfrak{su}(2)$ decomposition and Lorentz Lie algebra

Fields and Path integrals in the axiomatic Wightman setting

Unstable particles as Hilbert space states

Second quantization in QFT

Different definitions of configuration space

Finding the form of an Infinitesimal Lorentz matrix

Time dependence of ladder operators in QFT

Fermion LSZ reduction / Greens function

LSZ derivation and contact terms [closed]

Different adjoints in particle physics

Quark model wavefunction separability

SUSY and van der Waerden spinor notation

Literature request: Non-compact supported gauge transformations

Distributions in QFT