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AccidentalFourierTransform
  • Member for 6 years, 11 months
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162 votes
11 answers
16k views

What makes a theory "Quantum"?

28 votes
5 answers
5k views

Classical proof of the gyromagnetic ratio $g=2$

24 votes
2 answers
2k views

Is there any theorem that suggests that QM+SR has to be an operator theory?

24 votes
4 answers
2k views

What is CPT, really?

19 votes
1 answer
1k views

The system is topological; so what?

19 votes
1 answer
1k views

What goes wrong if we add a mass term for gauge bosons without the Higgs mechanism?

18 votes
1 answer
1k views

Uniqueness of Yang-Mills theory

18 votes
1 answer
4k views

Källén–Lehmann spectral representation for massless particle?

17 votes
2 answers
362 views

On the finiteness of quantum gravity$.$

15 votes
3 answers
2k views

Are the path integral formalism and the operator formalism inequivalent?

15 votes
2 answers
370 views

Quantum symmetries: $S$ or $Z$?

14 votes
1 answer
910 views

Representations of the Lorentz group in an arbitrary number of space-time dimensions$.$

14 votes
1 answer
865 views

Is the operator-state correspondence an axiom or a theorem?

13 votes
1 answer
152 views

Composite fields and statistics

13 votes
2 answers
2k views

Why can't a real scalar couple to the electromagnetic field?

13 votes
1 answer
3k views

Counterterm Lagrangian and Renormalisation?

12 votes
2 answers
578 views

What's a particle anyway?

12 votes
1 answer
431 views

On the asymptotics of interacting correlation functions

12 votes
1 answer
728 views

Is there a generalised Wigner-Eckart theorem?

12 votes
1 answer
1k views

How to identify higher-form symmetries?

11 votes
1 answer
748 views

When is an anomaly one-loop exact?

11 votes
1 answer
625 views

Anyon condensation – what's the precise definition?

11 votes
1 answer
437 views

Effective Field Theory vs Ostrogradsky

11 votes
3 answers
751 views

One particle states in an interacting theory

11 votes
1 answer
548 views

Is it possible to define off-shell spinors?

10 votes
0 answers
196 views

Can cut-off regularisation cause a Poincaré anomaly?

10 votes
1 answer
920 views

On a rigorous definition of Feynman's functional integral$.$

9 votes
1 answer
251 views

How do anomalies work in the causal formulation of QFT?

9 votes
1 answer
656 views

BRST cohomology and Gupta-Bleuler$.$

9 votes
3 answers
524 views

Why is the electron self-energy gauge dependent?

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