Work

Bosonic content of three-fermion highest-spin states

Year: 2026

Type: article

Abstract: A rigorous characterization of the information content of any highest-spin three-fermion wave function is presented. It is based upon a formal decomposition of the wave function into a finite set of fixed invariants, called shapes, whose sole purpose is to satisfy the Pauli principle, and a variable part, constituting the bosonic excitations of these invariants, that provides its physical content. As an example, this decomposition is applied to a benchmark-quality approximate wave function of the lowest-energy quartet electronic state of the lithium atom. This wave function, which comprises hundreds of basis functions, is reduced to eleven shape blocks, only five of which are numerically significant. Such a compact characterization is a generic example of the appearance of superselection rules in configuration space, and provides a qualitative aid in the search for robust few-particle entangled states.

Source: Quantum

DOI: 10.22331/q-2026-05-29-2121

Authors: Jerzy Cioslowski, Krzysztof Strasburger, Denis K. Sunko

Institutions: University of Szczecin, Wrocław University of Science and Technology, University of Zagreb

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $215

Funder: Hrvatska Zaklada za Znanost