Quantum Simulation of Bound and Resonant Doubly-Bottom Tetraquark
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866915783911669760 |
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| author | Dutta, Ayanendu |
| author_facet | Dutta, Ayanendu |
| contents | We present the first quantum-simulation study of bound and resonant doubly-bottom tetraquark states within a QCD-inspired chiral quark model. An effective four-quark Hamiltonian is mapped onto a 16-qubit register, encoding color, spin, and spatial degrees of freedom, and incorporating both meson-meson and diquark-antidiquark configurations with complete color bases. Using a variational quantum eigensolver, we identify bound and resonance states in the low-lying $S$-wave sector. Deeply bound states are found exclusively in the isoscalar $I(J^{P})=0(1^{+})$ channel, dominated by color-singlet meson-meson components with non-negligible hidden-color contributions. The resulting masses and binding energies are consistent with classical chiral quark model predictions, establishing quantum simulation as a viable framework for studying exotic multiquark states beyond the reach of conventional methods. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_05941 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Quantum Simulation of Bound and Resonant Doubly-Bottom Tetraquark Dutta, Ayanendu High Energy Physics - Lattice High Energy Physics - Phenomenology Quantum Physics We present the first quantum-simulation study of bound and resonant doubly-bottom tetraquark states within a QCD-inspired chiral quark model. An effective four-quark Hamiltonian is mapped onto a 16-qubit register, encoding color, spin, and spatial degrees of freedom, and incorporating both meson-meson and diquark-antidiquark configurations with complete color bases. Using a variational quantum eigensolver, we identify bound and resonance states in the low-lying $S$-wave sector. Deeply bound states are found exclusively in the isoscalar $I(J^{P})=0(1^{+})$ channel, dominated by color-singlet meson-meson components with non-negligible hidden-color contributions. The resulting masses and binding energies are consistent with classical chiral quark model predictions, establishing quantum simulation as a viable framework for studying exotic multiquark states beyond the reach of conventional methods. |
| title | Quantum Simulation of Bound and Resonant Doubly-Bottom Tetraquark |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology Quantum Physics |
| url | https://arxiv.org/abs/2602.05941 |