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This is a Quantitative Study study.

October 7, 2025Open Access

Five-body systems with Bethe-Salpeter equations

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Analysis of five-body systems reveals interactions among scalar particles, indicating complex states.

The study uncovers the five-body ground and excited states, revealing significant insights into particle interactions.
Numerical solutions of the five-body Bethe-Salpeter equation show coexistence of states depending on the exchange particle mass.
The approach uses properties of the permutation group S5 for approximate calculations, enhancing the tractability of the model.
Findings provide foundations for investigating pentaquark properties and their behavior under varying coupling strengths.

Eichmann et al. (2025) studied this question.

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