Nonexotic-exotic bipartite mode entanglements of an SU(3) baryon

Abstract

Much effort has been focused on the long-standing exotic puzzles of hadrons, but the knowledge remains limited to date. It is enlightening to take into account the information-theoretic methods and interpret a single baryon state as a mode-entangled W-type state in a multiqubit space defined by occupation number basis. In the framework of SU(3) Skyrme model, we make a systematic study of the exotic structures of low-lying baryons in terms of the von Neumann entanglement entropies (EEs), with emphasis on the case of nonexotic-exotic (E‾E) bipartition, together with an intersecting and comparative study of the entanglement of internal degrees of freedom (DOFs). Their potential implications to the diagnosis of exotic signals are discussed. Since the measurement of EE poses a hard challenge, we suggest an experimental simulation based on the Möbius resonant circuits to put these results to the test.