User Ivan Burbano

20 votes

4 answers

3k views

Does spacetime position not form a four-vector?

asked Jul 6, 2015 at 23:50

14 votes

4 answers

1k views

Haag's comment on the relation between fields and particles

quantum-field-theory particle-physics standard-model gauge-theory elementary-particles

asked Aug 4, 2020 at 12:34

12 votes

3 answers

2k views

Mathematical Formulation of Classical Spacetime

classical-mechanics mathematical-physics spacetime

asked May 30, 2016 at 21:19

7 votes

1 answer

153 views

Choice of folliation in path integral

quantum-field-theory hilbert-space path-integral vacuum wick-rotation

asked Apr 17, 2020 at 21:45

6 votes

1 answer

216 views

Is there a three-body exclusive interaction?

newtonian-mechanics forces classical-mechanics

asked Sep 10, 2020 at 13:39

6 votes

2 answers

306 views

Are representations of $\text{SL}(2,\mathbb{C})$ indexed by one half-integer or two?

special-relativity representation-theory lorentz-symmetry

asked Jan 28, 2019 at 16:24

6 votes

3 answers

291 views

Hamiltonian of non-regular Lagrangian is well-defined on phase space

classical-mechanics lagrangian-formalism hamiltonian-formalism hamiltonian constrained-dynamics

asked Mar 19, 2020 at 11:40

6 votes

1 answer

246 views

Functional Analytic Square Root of Hamiltonian Alternative to Dirac

quantum-mechanics schroedinger-equation hamiltonian dirac-equation non-locality

asked Apr 4, 2020 at 18:34

5 votes

1 answer

2k views

Problems of Klein Gordon equation

quantum-field-theory field-theory noethers-theorem klein-gordon-equation classical-field-theory

asked Mar 18, 2019 at 21:31

5 votes

1 answer

362 views

$(1,0)$ representation of $\text{SL}(2,\mathbb{C})$ and selfdual antisymmetric tensors

field-theory representation-theory lorentz-symmetry

asked Jan 25, 2019 at 15:13

5 votes

0 answers

87 views

Can one quantize Chern-Simons theory in the covariant phase space formalism?

hamiltonian-formalism phase-space covariance quantization chern-simons-theory

asked Nov 27, 2020 at 15:32

4 votes

1 answer

220 views

Gauge Symmetries as Redundancies vs Constraints

gauge-theory gauge-invariance quantization

asked May 4, 2020 at 1:38

3 votes

1 answer

237 views

Why is the Polyakov action special for $p\!=\!1$ branes?

lagrangian-formalism metric-tensor string-theory action branes

asked Jul 2, 2020 at 3:47

3 votes

1 answer

512 views

Details on the magnetic field of a linearly polarized electric wave

electromagnetism waves vector-fields

asked Oct 31, 2015 at 2:43

3 votes

1 answer

228 views

Abstract definition of conjugate points

general-relativity spacetime differential-geometry topology geodesics

asked Dec 9, 2017 at 16:32

3 votes

2 answers

3k views

Proof of Archimedes Principle

homework-and-exercises buoyancy fluid-statics

asked Jul 30, 2015 at 14:17

3 votes

1 answer

66 views

Cohomology of the Koszul-Tate complex for an irreducible symmetry vanishes in degree $-2$

field-theory gauge-invariance brst cohomology

asked Jul 30, 2020 at 16:08

3 votes

2 answers

168 views

Variation of action in terms of energy-momentum tensor

symmetry conformal-field-theory stress-energy-momentum-tensor noethers-theorem

asked Apr 20, 2020 at 12:27

3 votes

1 answer

223 views

Comparison between formulations of Noether's theorem

lagrangian-formalism conservation-laws symmetry field-theory noethers-theorem

asked Sep 21, 2020 at 20:48

3 votes

0 answers

65 views

Topological Descent Equation

quantum-field-theory symmetry commutator topological-field-theory cohomology

asked Sep 28, 2020 at 21:47

3 votes

1 answer

110 views

When can I use Gaussian integration to compute a path integral?

quantum-field-theory path-integral semiclassical instantons

asked Sep 4, 2020 at 21:25

2 votes

1 answer

88 views

Fixing non-calculus proof that Lorentz transformations are linear

special-relativity metric-tensor coordinate-systems inertial-frames group-theory

asked Jun 23, 2021 at 21:25

2 votes

1 answer

355 views

Proof that free scalar field is conformally invariant

symmetry conformal-field-theory classical-field-theory scale-invariance

asked Jun 23, 2021 at 23:22

2 votes

1 answer

56 views

Does one loose constraints with the total Hamiltonian?

classical-mechanics hamiltonian-formalism action linear-algebra constrained-dynamics

asked Jun 27, 2021 at 23:03

2 votes

1 answer

75 views

Representation of dilations

operators conformal-field-theory commutator lie-algebra scale-invariance

asked Aug 16, 2021 at 3:34

2 votes

2 answers

66 views

Sign error in representation of angular momentum on fields

conformal-field-theory representation-theory lie-algebra poincare-symmetry

asked Aug 18, 2021 at 1:09

2 votes

1 answer

166 views

Alternative expression for Riemann curvature tensor

general-relativity differential-geometry tensor-calculus conventions curvature

asked Mar 20 at 0:31

2 votes

1 answer

61 views

Dirac action momenta conjugate to conjugate field

hamiltonian-formalism fermions dirac-equation gauge-invariance constrained-dynamics

asked Apr 27, 2020 at 20:00

2 votes

1 answer

183 views

Why is radial ordering necessary?

quantum-field-theory conservation-laws conformal-field-theory commutator quantization

asked Aug 22, 2020 at 14:59

2 votes

1 answer

118 views

Wigner vs. BRST approach to Klein-Gordon

quantum-mechanics quantum-field-theory hilbert-space second-quantization brst

asked Jan 9, 2021 at 23:43

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72 Questions

Does spacetime position not form a four-vector?

Haag's comment on the relation between fields and particles

Mathematical Formulation of Classical Spacetime

Choice of folliation in path integral

Is there a three-body exclusive interaction?

Are representations of $\text{SL}(2,\mathbb{C})$ indexed by one half-integer or two?

Hamiltonian of non-regular Lagrangian is well-defined on phase space

Functional Analytic Square Root of Hamiltonian Alternative to Dirac

Problems of Klein Gordon equation

$(1,0)$ representation of $\text{SL}(2,\mathbb{C})$ and selfdual antisymmetric tensors

Can one quantize Chern-Simons theory in the covariant phase space formalism?

Gauge Symmetries as Redundancies vs Constraints

Why is the Polyakov action special for $p\!=\!1$ branes?

Details on the magnetic field of a linearly polarized electric wave

Abstract definition of conjugate points

Proof of Archimedes Principle

Cohomology of the Koszul-Tate complex for an irreducible symmetry vanishes in degree $-2$

Variation of action in terms of energy-momentum tensor

Comparison between formulations of Noether's theorem

Topological Descent Equation

When can I use Gaussian integration to compute a path integral?

Fixing non-calculus proof that Lorentz transformations are linear

Proof that free scalar field is conformally invariant

Does one loose constraints with the total Hamiltonian?

Representation of dilations

Sign error in representation of angular momentum on fields

Alternative expression for Riemann curvature tensor

Dirac action momenta conjugate to conjugate field

Why is radial ordering necessary?

Wigner vs. BRST approach to Klein-Gordon