MANY-BOSON DYNAMIC CORRELATIONS

E. Krotscheck, C. E. Campbell

André F. Verbeure

Aiichiro Nakano, Setsuo Ichimaru

Gregg S. Jaeger

Vincenzo Tamma, Simon Laibacher

C. E. Campbell, E. Krotscheck

In this paper we present an overview of a systematic development of the linear equations of motion for a dynamically correlated wave function that moves beyond the previous theories that include time-dependent pair correlations at most. We argue that these time-dependent pair correlations are insufficient to describe important physical effects in the energy/momentum regime of the 4 He roton; minimally, time-dependent three-body correlations are necessary to capture the relevant physics. For simplicity we illustrate this on the problem of atomic impurities in 4 He .