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4 votes
2 answers
124 views

Why are topological materials/phases "exotic"?

2 votes
0 answers
104 views

What are good quantum numbers for the Hyperfine Hamiltonian?

2 votes
1 answer
108 views

What is the evolution equations of spins with an Ising model hamiltonian?

2 votes
1 answer
54 views

Why is this the definition of the scattering matrix and reflection/transmission coefficients?

2 votes
1 answer
52 views

How to unfold electronic bands? How do the reduced/extended schemes work? Confusion regarding the quasi-momentum

2 votes
0 answers
160 views

Are first Integrals the same in Lagrangian and Hamiltonian formalism?

2 votes
1 answer
96 views

Question about an Exercise with Time-Dependent Hamiltonian

2 votes
0 answers
35 views

Why does the photon in Compton Scattering have a minimum frequency/maximum wavelenght?

1 vote
1 answer
80 views

Two springs coupled via a catenary

1 vote
0 answers
173 views

Proof of Wigner-Eckart Theorem

1 vote
1 answer
229 views

How do I compute the cohesive energy of a 1D Solid (in Tight Binding) due to electrons?

1 vote
2 answers
407 views

Why isn't the Segal-Bargmann space used more often in Quantum Mechanics?

0 votes
1 answer
73 views

Is the $p + p \to K^+ + K^+ + n + n$ process allowed in the SM?

0 votes
1 answer
37 views

How to construct eigenvectors of angular momentum and directional parity (mirror)?

0 votes
1 answer
235 views

What is the charge distribution of an Electric Quadrupole?

0 votes
2 answers
126 views

What does "continuous transformation" mean with regard to the Hamiltonian of a system?