Abstract
Bose condensation is characterized by a condition on the zero-frequency fourier component of the self-energy at the critical value of the chemical potential. This condition is used to show that under the action of an external linear perturbation the k = 0 mode goes over into a coherent state in the sense discussed by Glauber. Both the interparticle interaction and the external perturbation are treated exactly.
| Original language | English |
|---|---|
| Pages (from-to) | 441-454 |
| Number of pages | 14 |
| Journal | Annals of Physics |
| Volume | 48 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jul 1968 |
| Externally published | Yes |