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Partonic collinear structure by quantum computing
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We present a systematic quantum algorithm, which integrates both the hadronic state preparation and the evaluation of real-time light-front correlators, to study parton distribution functions (PDFs). As a proof of concept, we demonstrate the first direct simulation of the PDFs in the 1+1 dimensional Nambu-Jona-Lasinio model. We show the results obtained by exact diagonalization and by quantum computation using classical hardware. The agreement between these two distinct methods and the qualitative consistency with QCD PDFs validate the proposed quantum algorithm. Our work suggests the encouraging prospects of calculating QCD PDFs on current and near-term quantum devices. The presented quantum algorithm is expected to have many applications in high energy particle and nuclear physics.
Forward citations
Cited by 4 Pith papers
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Quantum simulation of scattering amplitudes and interferences in perturbative QCD
A quantum circuit encodes QCD colour factors and diagram interferences in a measurement probability, with permuted identical-particle diagrams generated by swap sorting networks.
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Quantum simulating multi-particle processes in high energy nuclear physics: dijet production and color (de)coherence
A quantum-circuit framework maps partonic cross-sections for multi-particle QCD processes in media, benchmarked on dipole formation and antenna radiation at leading order.
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Quantum computation of hadron scattering in a lattice gauge theory
On a trapped-ion quantum computer, the authors prepared multiple meson wave packets and simulated their early-time collisions in a 1+1D Z2 lattice gauge theory.
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Quantum algorithms for the simulation of QCD processes in the perturbative regime
Quantum circuits for the colour algebra of perturbative QCD are presented and validated on a simulator, matching analytic colour factors for example diagrams.
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