User Mauro Giliberti

13 votes

3 answers

1k views

What is the rigorous definition of the verb "to quantize"?

asked Mar 7, 2021 at 23:57

8 votes

1 answer

680 views

Anomaly, symmetries, and Ward identity

quantum-field-theory gauge-theory quantum-anomalies ward-identity

asked Apr 8, 2021 at 18:14

8 votes

2 answers

131 views

What is the "instanton configurations of the gauge field"?

gauge-theory quantum-anomalies instantons

asked Oct 1, 2021 at 10:10

8 votes

3 answers

482 views

Fundamental reason for the color and flavor group to be the same?

particle-physics standard-model quarks leptons color-charge

asked Dec 20, 2021 at 11:13

7 votes

2 answers

729 views

Units in general relativity

general-relativity metric-tensor units dimensional-analysis

asked Aug 27, 2019 at 14:48

6 votes

1 answer

396 views

What theory is a non-field-theory?

field-theory renormalization

asked Nov 3, 2020 at 14:32

6 votes

1 answer

187 views

Does the neutrino interact with the photon?

quantum-field-theory quantum-electrodynamics neutrinos effective-field-theory

asked May 19 at 12:48

6 votes

1 answer

741 views

Do gluons care about flavor?

quantum-field-theory standard-model quantum-chromodynamics gluons

asked Oct 11, 2021 at 6:12

5 votes

2 answers

234 views

How does SSB happen?

standard-model phase-transition higgs symmetry-breaking thermal-field-theory

asked Dec 21, 2021 at 13:44

5 votes

3 answers

475 views

What does it mean to be "gauging" a symmetry?

symmetry terminology gauge-theory definition gauge-invariance

asked Apr 10, 2021 at 15:22

5 votes

1 answer

296 views

Picture of Sgr A* [duplicate]

black-holes astronomy telescopes

asked Apr 7, 2019 at 20:31

5 votes

2 answers

529 views

What is wrong with Weyl-Wigner representation?

quantum-mechanics hilbert-space phase-space wigner-transform

asked Jul 4, 2020 at 17:06

4 votes

3 answers

209 views

Identity of dynamical D$p$-branes

string-theory branes visualization

asked Apr 23, 2021 at 21:34

4 votes

2 answers

186 views

Action dimensions in string theory

string-theory action spacetime-dimensions branes effective-field-theory

asked Apr 30, 2021 at 17:55

4 votes

1 answer

129 views

Can I write the Hamiltonian $H$ in the standard way $p\dot{q}-L$ for a general QFT?

lagrangian-formalism field-theory gauge-theory hamiltonian-formalism constrained-dynamics

asked Nov 15, 2021 at 15:06

4 votes

2 answers

358 views

What does "propagate" mean in QFT?

quantum-field-theory gauge-theory definition propagator carrier-particles

asked Aug 28, 2021 at 14:48

4 votes

1 answer

139 views

Renormalization conditions for QED self-energies

quantum-field-theory quantum-electrodynamics renormalization self-energy

asked Aug 30, 2021 at 17:13

3 votes

1 answer

168 views

Two perturbative expansions in String Theory

string-theory perturbation-theory interactions physical-constants

asked Jun 9, 2021 at 10:05

3 votes

2 answers

164 views

What is, diagrammatically, the 2-vertex $\Gamma^{(2)}$?

quantum-field-theory feynman-diagrams propagator 1pi-effective-action self-energy

asked Nov 14, 2021 at 10:14

3 votes

1 answer

91 views

EFT's $\hbar$ counting at loop level

quantum-field-theory lagrangian-formalism feynman-diagrams dimensional-analysis effective-field-theory

asked May 22 at 19:07

3 votes

0 answers

155 views

AdS/CFT spacetime visualization

spacetime string-theory ads-cft anti-de-sitter-spacetime visualization

asked Jun 5, 2021 at 14:32

3 votes

2 answers

514 views

What's the inner ergosphere in a Kerr black hole?

general-relativity black-holes spacetime event-horizon kerr-metric

asked Sep 24, 2020 at 8:59

3 votes

1 answer

166 views

Is it possible to derive the canonical ensemble without the microcanonical one?

thermodynamics statistical-mechanics entropy

asked Jul 6, 2020 at 10:52

3 votes

2 answers

496 views

Why don't we study spin-3/2 fields?

quantum-field-theory field-theory fermions

asked Jul 26, 2020 at 17:35

3 votes

3 answers

221 views

Why should the X17 be a force carrier?

particle-physics nuclear-physics interactions carrier-particles x17

asked Nov 26, 2019 at 16:29

2 votes

1 answer

113 views

Mass and breaking in SSB

quantum-field-theory mass field-theory higgs symmetry-breaking

asked Jun 29, 2020 at 16:30

2 votes

2 answers

201 views

What are the relations between mixed/pure and separable/entangled states?

quantum-mechanics hilbert-space quantum-information quantum-entanglement quantum-states

asked Jun 5, 2021 at 21:48

2 votes

2 answers

115 views

Are Dirac/Weyl/Majorana fermions exclusive?

representation-theory fermions dirac-equation spinors majorana-fermions

asked May 30, 2021 at 14:54

2 votes

1 answer

47 views

EFT matching: using tree-level to perform 1-loop-level

quantum-field-theory lagrangian-formalism renormalization dimensional-analysis effective-field-theory

asked May 22 at 18:50

2 votes

1 answer

98 views

1-loop renormalization of general scalar in general dimension

quantum-field-theory renormalization feynman-diagrams

asked Nov 20, 2021 at 21:37

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71 Questions

What is the rigorous definition of the verb "to quantize"?

Anomaly, symmetries, and Ward identity

What is the "instanton configurations of the gauge field"?

Fundamental reason for the color and flavor group to be the same?

Units in general relativity

What theory is a non-field-theory?

Does the neutrino interact with the photon?

Do gluons care about flavor?

How does SSB happen?

What does it mean to be "gauging" a symmetry?

Picture of Sgr A* [duplicate]

What is wrong with Weyl-Wigner representation?

Identity of dynamical D$p$-branes

Action dimensions in string theory

Can I write the Hamiltonian $H$ in the standard way $p\dot{q}-L$ for a general QFT?

What does "propagate" mean in QFT?

Renormalization conditions for QED self-energies

Two perturbative expansions in String Theory

What is, diagrammatically, the 2-vertex $\Gamma^{(2)}$?

EFT's $\hbar$ counting at loop level

AdS/CFT spacetime visualization

What's the inner ergosphere in a Kerr black hole?

Is it possible to derive the canonical ensemble without the microcanonical one?

Why don't we study spin-3/2 fields?

Why should the X17 be a force carrier?

Mass and breaking in SSB

What are the relations between mixed/pure and separable/entangled states?

Are Dirac/Weyl/Majorana fermions exclusive?

EFT matching: using tree-level to perform 1-loop-level

1-loop renormalization of general scalar in general dimension