The European Physical Journal Plus

Contact interactions: the two-dimensional case

G. F. Delll’Antonio

Published Oct 1, 2021• 0 citations

Abstract

Abstract We prove that in two dimensions the contact interaction of two wave functions is represented by a self-adjoint operator. Together with a confining potential, this provides a stable condensate of two-particle systems. Recall that in three dimensions one has a condensate of four wave functions in contact interaction (the Bose–Einstein condensate).

DOI: 10.1140/epjp/s13360-021-02051-1

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