Triply-heavy/strange baryons with Cornell potential on a quantum computer

• Published in: The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2024-11, Vol.60 (11), Article 216
• Main Authors: de Arenaza, Nicolás Martínez, Gálvez-Viruet, J. J., Llanes-Estrada, Felipe J.
• Format: Article
• Language: English
• Subjects: Approximation; Baryons; Hadrons; Heavy Ions; Nuclear Fusion; Nuclear Physics; Parameter estimation; Particle and Nuclear Physics; Physics; Physics and Astronomy; Quantum computers; Quark models; Quarks; Regular Article - Theoretical Physics; Standard model (particle physics); Uncertainty
• ISSN: 1434-601X; 1434-6001; 1434-601X
• DOI: 10.1140/epja/s10050-024-01430-3

We present a computation of triply-heavy baryons on a quantum computer, employing the Cornell quark model in line with the earlier quarkonium work of Gallimore and Liao. These baryons are some of the most interesting Standard Model particles which have not yet been detected, as they bear on the short range (colour) behaviour of the nuclear force. The spectrum here obtained is compatible with predictions from earlier works, with our uncertainty dominated by traditional few-body approximations (size of the variational basis, center of mass recoil, parameter estimation...) and not by the statistical error from the quantum computer (deployed here as a small diagonalizer), which turns out to be negligible with respect to the other sources of uncertainty, at least in the present unsophisticated few-body approximation. We have also substituted one or more heavy quarks for strange quarks.