Magic of discrete lattice gauge theories
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866912840899624960 |
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| author | Esposito, Gianluca Cepollaro, Simone Cappiello, Luigi Hamma, Alioscia |
| author_facet | Esposito, Gianluca Cepollaro, Simone Cappiello, Luigi Hamma, Alioscia |
| contents | Simulation of quantum field theories and fundamental interactions are one of the most challenging tasks in modern particle physics. Classical computers generally fail to reproduce accurate results when it comes to strongly coupled theories such as QCD. Recent developments in quantum technologies open up the possibility of simulating such physical regimes by using quantum computers. In this paper, we study the quantum resource related to the simulability of a quantum theory, i.e. non-stabilizerness for Lattice Gauge Theory (LGT) with discrete symmetry gauge groups. We show that enforcing gauge constraints for $\mathbb{Z}_l$ LGTs has no cost in terms of this resource and discuss the relation between non-abelianity of the gauge group with the average non-stabilizerness of the gauge invariant Hilbert space. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_15842 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Magic of discrete lattice gauge theories Esposito, Gianluca Cepollaro, Simone Cappiello, Luigi Hamma, Alioscia High Energy Physics - Lattice Quantum Physics Simulation of quantum field theories and fundamental interactions are one of the most challenging tasks in modern particle physics. Classical computers generally fail to reproduce accurate results when it comes to strongly coupled theories such as QCD. Recent developments in quantum technologies open up the possibility of simulating such physical regimes by using quantum computers. In this paper, we study the quantum resource related to the simulability of a quantum theory, i.e. non-stabilizerness for Lattice Gauge Theory (LGT) with discrete symmetry gauge groups. We show that enforcing gauge constraints for $\mathbb{Z}_l$ LGTs has no cost in terms of this resource and discuss the relation between non-abelianity of the gauge group with the average non-stabilizerness of the gauge invariant Hilbert space. |
| title | Magic of discrete lattice gauge theories |
| topic | High Energy Physics - Lattice Quantum Physics |
| url | https://arxiv.org/abs/2601.15842 |