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arXiv · 2608.30375

First-principle predictions of fragmentation functions via quantum computing

Juan J. Gálvez-Viruet·Felipe J. Llanes-Estrada·Nicolas M. Arenaza·María Gómez-Rocha·T. J. Hobbs
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Abstract

We report on an algorithm to compute fragmentation functions from the first principles Quantum Chromodynamics (QCD) Hamiltonian quantized in Light-Front Gauge, opening a path for digital quantum computers to calculate these longitudinal jet-structure observables. Simulating the behaviour of such computers on a classical cluster (which is memory-limited to about 30 qubits, given the expansive Hilbert spaces of actual quantum computers), we run a demonstration of a heavy-quark leading parton fragmenting into quarkonium, which we benchmark against NRQCD computations. Future quantum computers, perhaps concurrently running with HL-LHC, would have ample opportunity to extract arbitrary parton-hadron combinations.

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Juan J. Gálvez-Viruet, Felipe J. Llanes-Estrada, Nicolas M. Arenaza, María Gómez-Rocha, T. J. Hobbs. 2026-08-31. First-principle predictions of fragmentation functions via quantum computing. https://arxiv.org/abs/2608.30375

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