Simple condensation of interacting bosons

✍ Scribed by A Casher; M Revzen

• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 728 KB
• Volume: 48
• Category: Article
• ISSN: 0003-4916
• DOI: 10.1016/0003-4916(68)90141-3

✦ Synopsis

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.