User Chris

3 votes

2 answers

2k views

What is "Density of States" and how does one generally find it?

asked Mar 25, 2022 at 1:20

2 votes

4 answers

307 views

What is the physical significance of $\mathbf{E}^2-\mathbf{B}^2$ in E and M?

asked Feb 9, 2023 at 19:38

2 votes

1 answer

595 views

Do the retarded potentials satisfy the Lorenz Gauge condition?

asked Mar 14, 2022 at 18:38

1 vote

0 answers

104 views

Yang-Mills-Dirac Lagrangian and Gravity

asked May 2, 2023 at 17:54

1 vote

0 answers

92 views

Commutator of $K$ and $\alpha_p^\dagger$

asked Sep 19, 2022 at 19:21

1 vote

1 answer

201 views

Confusion About Time Dependent Perturbation Theory

asked Oct 11, 2021 at 20:28

1 vote

1 answer

210 views

Gravitational Binding energy of a sphere of 2 uniform densities

asked Dec 5, 2020 at 7:21

1 vote

1 answer

2k views

Question about the Partition Function For 2 Fermions In a 2-Level System

asked Apr 1, 2021 at 2:10

1 vote

0 answers

25 views

Attempting To Discretize the Potential of a Point Charge

asked Apr 23, 2021 at 1:43

0 votes

2 answers

727 views

Quantum Harmonic Oscillator With a Sudden Change in Electric Field

asked Oct 8, 2021 at 1:16

0 votes

0 answers

180 views

Calculating the electric potential in the Lorenz gauge

asked Feb 15, 2022 at 23:02

0 votes

0 answers

98 views

Total spin Operator on a state that is not an eigenstate

asked Apr 4, 2022 at 0:15

0 votes

1 answer

73 views

Gauge Symmetry in Electromagnetism

asked Oct 16, 2022 at 4:36

0 votes

0 answers

118 views

Spin and Representation Theory

asked Apr 16, 2023 at 23:09

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14 Questions

What is "Density of States" and how does one generally find it?

What is the physical significance of $\mathbf{E}^2-\mathbf{B}^2$ in E and M?

Do the retarded potentials satisfy the Lorenz Gauge condition?

Yang-Mills-Dirac Lagrangian and Gravity

Commutator of $K$ and $\alpha_p^\dagger$

Confusion About Time Dependent Perturbation Theory

Gravitational Binding energy of a sphere of 2 uniform densities

Question about the Partition Function For 2 Fermions In a 2-Level System

Attempting To Discretize the Potential of a Point Charge

Quantum Harmonic Oscillator With a Sudden Change in Electric Field

Calculating the electric potential in the Lorenz gauge

Total spin Operator on a state that is not an eigenstate

Gauge Symmetry in Electromagnetism

Spin and Representation Theory