Gravity the Cavity's user avatar
Gravity the Cavity's user avatar
Gravity the Cavity's user avatar
Gravity the Cavity
  • Member for 3 years, 10 months
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8 votes
3 answers
443 views

QFT vacuum and the zero point energy

6 votes
3 answers
1k views

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

6 votes
3 answers
1k views

Different Hilbert spaces in quantum mechanics

5 votes
1 answer
352 views

When does QFT perturbation theory stop being valid?

4 votes
1 answer
213 views

Standard model notation on doublets

4 votes
1 answer
164 views

Wigner classification of particles vs generic Hamiltonian spectrum

4 votes
2 answers
4k views

Convective derivative vs total derivative

4 votes
2 answers
737 views

Local phase invariance of our lagrangian

3 votes
1 answer
200 views

The interpretation of the quantum field

2 votes
1 answer
123 views

Defining the exterior derivative with torsion [duplicate]

2 votes
0 answers
73 views

Classification of couplings in continuum renormalisation

2 votes
1 answer
226 views

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

2 votes
1 answer
178 views

Fields and Path integrals in the axiomatic Wightman setting

1 vote
0 answers
68 views

Unstable particles as Hilbert space states

1 vote
0 answers
101 views

Second quantization in QFT

1 vote
2 answers
138 views

Different definitions of configuration space

1 vote
1 answer
179 views

Finding the form of an Infinitesimal Lorentz matrix

1 vote
2 answers
677 views

Time dependence of ladder operators in QFT

1 vote
1 answer
671 views

Fermion LSZ reduction / Greens function

1 vote
1 answer
197 views

LSZ derivation and contact terms [closed]

1 vote
1 answer
135 views

Different adjoints in particle physics

1 vote
1 answer
95 views

Quark model wavefunction separability

1 vote
1 answer
296 views

SUSY and van der Waerden spinor notation

0 votes
2 answers
56 views

Literature request: Non-compact supported gauge transformations

0 votes
0 answers
73 views

Distributions in QFT