Quantum theory of two-atom, few-atom, and many-atom systems

University Of Toledo, Toledo OH

Investigators

Abstract

Further development and application of a cross-discipline theoretical framework for two-atom, few-atom, and many-atom quantum systems is proposed. The theory, the multiscale quantum-defect theory, asserts that universal properties exist at different length scales for such systems, and provides methods to uncover and study them. It has been developed by the P.I. over the past few years, and has been demonstrated explicitly for two-atom, few-atom, and many-atom quantum systems. The proposed research is expected to lead to the development of a new theoretical framework for studying strongly-coupled many-atom quantum systems and highly excited clusters, including a first microscopic quantum theory of liquids that goes beyond the liquid helium. It is also expected to lead to much improved understanding of fundamental atomic and molecular processes that include, e.g., the interaction and scattering of polar molecules and the Feshbach resonances in nonzero partial waves in ultracold atomic interactions.