User Faber Bosch

23 votes

4 answers

6k views

Why is Noether's theorem not guaranteed by calculus?

asked Apr 16 at 1:27

13 votes

5 answers

2k views

Show that any proper homogeneous Lorentz transformation may be expressed as the product of a boost times a rotation

asked Oct 22, 2020 at 16:45

9 votes

4 answers

826 views

Intuitive argument for symmetry of Lorentz boosts

asked Nov 2, 2020 at 14:43

7 votes

6 answers

759 views

Deriving $\Lambda^i_{\,j}$ components of the Lorentz transformation matrix

asked Oct 22, 2020 at 14:11

6 votes

1 answer

250 views

Geometric interpretation of constrained dynamical systems

asked Jun 14 at 11:02

5 votes

2 answers

274 views

Confusion regarding bundle structure of Galilean spacetime in Penrose's The Road to Reality

asked Jun 26 at 2:34

4 votes

1 answer

414 views

Kepler's second law in General Relativity

asked Dec 25, 2020 at 3:26

4 votes

1 answer

449 views

Derivation of Gauss-Codazzi type equation (Ricci relation)

asked Sep 14, 2021 at 16:56

4 votes

0 answers

93 views

What kind of matter's energy density scales as the inverse of the scale factor

asked Oct 22, 2021 at 6:42

4 votes

3 answers

196 views

Sources on relativistic rotational mechanics

asked Oct 27, 2020 at 8:52

3 votes

0 answers

90 views

Does potential energy break Poincare invariance down to invariance under Lorentz boosts?

asked Nov 1, 2020 at 15:23

3 votes

0 answers

169 views

Radial wave function matrix elements

asked May 10, 2020 at 7:00

3 votes

3 answers

760 views

Inverse metric for 3+1 decomposition

asked Aug 16, 2020 at 6:36

3 votes

1 answer

10k views

Number of independent components for tensors in general

asked Oct 20, 2020 at 11:41

3 votes

2 answers

882 views

Conserved quantities quantum field theory

asked Nov 7, 2020 at 4:30

3 votes

0 answers

143 views

d'Alembertian operator in presence of torsion

asked Apr 29 at 16:41

3 votes

1 answer

48 views

Invariance of d'Alembertian for Lorentz boost in arbitrary directions

asked Jun 6 at 10:46

2 votes

1 answer

196 views

Symmetry of geodesic equations under the transformation of Christoffel symbols

asked Nov 14, 2020 at 5:01

2 votes

1 answer

243 views

Path integral of free particle with time-dependent mass

asked May 13, 2021 at 14:34

2 votes

2 answers

185 views

Confusion regarding index notations for Lorentz transformation matrix for boosts and its symmetry properties

asked Oct 22, 2020 at 6:59

2 votes

3 answers

270 views

How electromagnetic wave was related to visible light? [closed]

asked Oct 16, 2020 at 16:58

2 votes

1 answer

2k views

How velocities transform from Cartesian to Polar coordinates

asked Oct 17, 2020 at 16:09

2 votes

2 answers

985 views

Expression for extrinsic curvature

asked Aug 16, 2020 at 10:10

2 votes

2 answers

352 views

Invariance of inner product under Poincare transformation

asked Nov 5, 2020 at 7:41

1 vote

1 answer

223 views

Intuitively arguing that the determinant of Lorentz boost matrices is unity

asked Nov 3, 2020 at 14:40

1 vote

4 answers

200 views

Is $U^\dagger(R)\hat{H}U(R)=\hat{H}$ always true?

asked Oct 16, 2020 at 8:28

1 vote

1 answer

139 views

Path integral with initial definite momentum

asked May 14, 2021 at 2:21

0 votes

1 answer

198 views

A particular contraction of Levi-Civita symbols and tetrads

asked Apr 29, 2022 at 8:37

0 votes

1 answer

40 views

Time period for Mercury

asked Dec 25, 2020 at 3:32

0 votes

0 answers

38 views

Text reference for linear Stark Effect

asked May 24, 2020 at 1:29

Stack Exchange Network

31 Questions

Why is Noether's theorem not guaranteed by calculus?

Show that any proper homogeneous Lorentz transformation may be expressed as the product of a boost times a rotation

Intuitive argument for symmetry of Lorentz boosts

Deriving $\Lambda^i_{\,j}$ components of the Lorentz transformation matrix

Geometric interpretation of constrained dynamical systems

Confusion regarding bundle structure of Galilean spacetime in Penrose's The Road to Reality

Kepler's second law in General Relativity

Derivation of Gauss-Codazzi type equation (Ricci relation)

What kind of matter's energy density scales as the inverse of the scale factor

Sources on relativistic rotational mechanics

Does potential energy break Poincare invariance down to invariance under Lorentz boosts?

Radial wave function matrix elements

Inverse metric for 3+1 decomposition

Number of independent components for tensors in general

Conserved quantities quantum field theory

d'Alembertian operator in presence of torsion

Invariance of d'Alembertian for Lorentz boost in arbitrary directions

Symmetry of geodesic equations under the transformation of Christoffel symbols

Path integral of free particle with time-dependent mass

Confusion regarding index notations for Lorentz transformation matrix for boosts and its symmetry properties

How electromagnetic wave was related to visible light? [closed]

How velocities transform from Cartesian to Polar coordinates

Expression for extrinsic curvature

Invariance of inner product under Poincare transformation

Intuitively arguing that the determinant of Lorentz boost matrices is unity

Is $U^\dagger(R)\hat{H}U(R)=\hat{H}$ always true?

Path integral with initial definite momentum

A particular contraction of Levi-Civita symbols and tetrads

Time period for Mercury

Text reference for linear Stark Effect