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Mauro Giliberti
  • Member for 3 years, 5 months
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173 votes
5 answers
22k views

Gauge symmetry is not a symmetry?

  • 15.9k
145 votes
2 answers
25k views

Does the Planck scale imply that spacetime is discrete?

  • 3,601
143 votes
7 answers
12k views

Is temperature a Lorentz invariant in relativity?

  • 2,577
108 votes
3 answers
19k views

Differentiating Propagator, Green's function, Correlation function, etc

  • 7,917
57 votes
8 answers
6k views

How do different definitions of entropy connect with each other?

54 votes
12 answers
17k views

Why are angles dimensionless and quantities such as length not?

  • 659
47 votes
5 answers
12k views

Noether charge of local symmetries

41 votes
1 answer
18k views

Differences between pure/mixed/entangled/separable/superposed states

  • 1,413
38 votes
3 answers
9k views

Noether's theorem and gauge symmetry

  • 661
38 votes
9 answers
7k views

Why don't we prove that functions used in physics are continuous and differentiable?

37 votes
1 answer
2k views

Instantons, anomalies, and 1-loop effects

  • 903
37 votes
4 answers
3k views

When can a global symmetry be gauged?

28 votes
2 answers
6k views

Physical difference between gauge symmetries and global symmetries

  • 1,306
25 votes
2 answers
9k views

Dirac, Weyl and Majorana Spinors

  • 1,246
23 votes
3 answers
28k views

Meaning of the chemical potential for a boson gas

21 votes
1 answer
3k views

Gauge redundancies and global symmetries [closed]

  • 2,356
18 votes
5 answers
13k views

How do I calculate the perturbations to the metric determinant?

  • 401
18 votes
1 answer
4k views

What is a D-brane?

18 votes
2 answers
2k views

Renormalization in string theory

  • 8,500
17 votes
2 answers
4k views

Is the "protophobic fifth force" observed in nuclear decays a new fundamental force?

  • 474
16 votes
1 answer
1k views

Does the renormalization group apply to string theory?

  • 161
16 votes
1 answer
371 views

Fate of largest scale structures?

  • 18k
15 votes
1 answer
2k views

QED and anomaly

  • 24.3k
12 votes
3 answers
944 views

What makes the electron, as an excitation in a field, discrete?

12 votes
4 answers
2k views

What is the path integral exactly?

  • 121
10 votes
2 answers
627 views

Thermal radiation contains no information?

  • 4,909
9 votes
1 answer
355 views

Why aren't D-branes and strings independent degrees of freedom?

9 votes
4 answers
540 views

Is naturalness meaningful for non-fundamental theories?

  • 3,452
8 votes
1 answer
4k views

Tetrad formalism vs coordinate formalism example

  • 799
6 votes
1 answer
91 views

Besides dim regularization, what are the advantages of Euclidean QFT?