The Superfluid State of a Bose Liquid as a Superposition of a Single-Particle and Pair Coherent Condensates

E. A. Pashitskii, S. V. Mashkevich, S. I. Vilchynskyy

One considers the superfluid (SF) state of a Bose liquid with a strong repulsion between bosons, in which at T=0, along with a weak single-particle Bose-Einstein condensate (BEC),…