• Corpus ID: 253581284

Arrangement and chemical complexity in an $N$-body quantum system

@inproceedings{Gao2022ArrangementAC,
  title={Arrangement and chemical complexity in an \$N\$-body quantum system},
  author={Bo Gao},
  year={2022}
}

• B. Gao
• Published 17 November 2022
• Physics

We introduce and discuss the concept of arrangement , traditionally found in the context of chemical reactions and few-body rearrangement collisions, in the general context of an N -body quantum system. We show that the ability for particles to attract and bind is a key source of complexity of an N -body quantum system, and arrangement is an emergent concept necessitated by the description of this complexity. For an N -body system made of particles of which some or all can attract and bind, the concept of arrangement is not only necessary for a full characterization of its quantum states and processes, but it also provides a basis for the understanding and the description of the structure of its energy spectrum. We also discuss and formulate multiparticle separability in an N body system, the mathematical foundation that underlies the arrangement concept in an N -body theory.