Nuclear bound states of antikaons, or quantized multiskyrmions?

TL;DR

This paper investigates the spectrum of strange multibaryons using a chiral soliton model, identifying potential antikaon-nucleus bound states and exploring their properties across different parameter regimes.

Contribution

It introduces a specific SU(3) quantization approach within the chiral soliton model to study antikaon-nuclear bound states and analyzes their characteristics.

Findings

Multiple bound states predicted at small kaon mass

Several states identified at physical kaon mass

Large binding energies lead to ambiguous state interpretation

Abstract

The spectrum of strange multibaryons is considered within the chiral soliton model using one of several possible SU(3$ quantization models (the bound state rigid oscillator version). The states with energy below that of antikaon and corresponding nucleus can be interpreted as antikaon-nucleus bound states. In the formal limit of small kaon mass the number of such states becomes large, for real value of this mass there are at least several states. For large values of binding energies interpretation of such states just as antikaon-nuclear bound states becomes more ambiguous.