Tobias Fünke's user avatar
Tobias Fünke's user avatar
Tobias Fünke's user avatar
Tobias Fünke
  • Member for 4 years, 11 months
  • Last seen this week
  • Deutschland
9 votes
2 answers
1k views

Derivation of partition function for $N$ identical quantum harmonic oscillators

14 votes
1 answer
909 views

Resolution of the identity of operator with mixed spectrum

5 votes
2 answers
575 views

In what sense is the set of density matrices compact in infinite dimensions?

5 votes
2 answers
572 views

Time ordering operator identity

6 votes
1 answer
458 views

Operators and periodic boundary conditions

6 votes
1 answer
410 views

What is the importance of unitary (in-)equivalent representations?

5 votes
2 answers
371 views

Necessary and sufficient conditions for operator on $\mathbb C^2$ to be a density matrix

8 votes
1 answer
320 views

Normal ordering and construction of the physical Hilbert space

3 votes
2 answers
294 views

Different parts of spectrum appearing in the spectral theorem in terms of generalized eigenvectors

2 votes
1 answer
236 views

Domain issues for products of bosonic creation and annihilation operators

3 votes
1 answer
221 views

Thermodynamic limit and periodic boundary conditions

2 votes
2 answers
197 views

Simultaneous transformations on states and observables which leave predictions invariant

1 vote
0 answers
175 views

On the definition of the bosonic one-particle reduced density matrix