On the time evolution of large systems: A soluble model with two-body interactions

✍ Scribed by H.J. Kreuzer; A.Z. Capri

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 603 KB
• Volume: 81
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/0378-4371(75)90056-4

✦ Synopsis

We study the time evolution of a large system consisting of two kinds of particles that can be transformed into each other by an external field. The introduction of strong enough two-body interactions leads to the emergence of two time scales. The first one is connected with (small) asymptotic oscillations, and the second characteristic time describes a monotonic decay of the initial state. We also solve exactly and study a second model in which the two-body forces are replaced by a pair-production interaction.