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Hans Wurst
  • Member for 4 years, 10 months
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12 votes
2 answers
25k views

Exact relationship between electric field and intensity

7 votes
2 answers
739 views

What is meant when we say that a differential takes on a certain value?

5 votes
1 answer
233 views

Combining two 1D Hamiltonians: How to construct the new Hamiltonian properly?

5 votes
1 answer
159 views

Linguistic usage of the term "triplet state"

4 votes
2 answers
266 views

Dirac Notation and Coordinate transformation of a function

4 votes
2 answers
114 views

Can superposition states be created by thermal excitation?

4 votes
1 answer
184 views

Derivation for number of photons assigned to to an electromagnetic field amplitude

3 votes
0 answers
305 views

What does the Interferogram of a FTIR-spectrometer show ? Is it instantenous intensity vs time or time averaged intensity vs time?

3 votes
2 answers
322 views

What is a nuclear wave packet?

2 votes
1 answer
71 views

Is there an easy way to know on which variables a thermodynamic potential depends?

2 votes
1 answer
69 views

Time-dependent pertubation theory assigning the order of expansion to squares of the solution

2 votes
1 answer
299 views

Limit of the $\sin^2$ function in the derivation of Fermi's golden rule

2 votes
1 answer
293 views

Hamilton-Jacobi Equation: Why does any $F(q,Q,0)=f(q,Q)$ lead to a solution?

2 votes
1 answer
80 views

Is there a classical limit that connects classical volume/phase space with the scalar product of momentum and position eigenstates?

2 votes
0 answers
33 views

Can Black Body Radiation occur from a material with zero dipole moment?

1 vote
1 answer
110 views

Derivation of the refractive index dependency of the light-matter interaction hamiltonian

1 vote
2 answers
145 views

How do you pick the wavenumber at which the group velocitiy is evaluated?

1 vote
1 answer
62 views

Is this a projection of a tensor state?

1 vote
1 answer
80 views

Value of matrix elements between bound and unbound states

1 vote
2 answers
259 views

Closed form expression for the density operator for the harmonic oscillator in thermal equilibrium

0 votes
1 answer
143 views

Constructing the density of states of multiple independent harmonic oscillators

0 votes
1 answer
40 views

Dependency of molecular spontaneous emission on the refractive index

0 votes
1 answer
85 views

Refractive index and light-matter interaction Hamiltonian

0 votes
1 answer
53 views

Correct indices on coupling matrix elements

0 votes
0 answers
139 views

Why are there no potential operators that are non-diagonal in position basis?

0 votes
1 answer
68 views

Rate of spontaneous emission and energy conservation

0 votes
0 answers
77 views

Orthogonality of basis functions of irreducible representations

0 votes
1 answer
54 views

How small/large can a sun/star be?