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Parton Physics on a Quantum Computer
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Parton distribution functions and hadronic tensors may be computed on a universal quantum computer without many of the complexities that apply to Euclidean lattice calculations. We detail algorithms for computing parton distribution functions and the hadronic tensor in the Thirring model. Their generalization to QCD is discussed, with the conclusion that the parton distribution function is best obtained by fitting the hadronic tensor, rather than direct calculation. As a side effect of this method, we find that lepton-hadron cross sections may be computed relatively cheaply. Finally, we estimate the computational cost of performing such a calculation on a digital quantum computer, including the cost of state preparation, for physically relevant parameters.
Forward citations
Cited by 2 Pith papers
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Creation of Wave Packets for Quantum Chromodynamics on Quantum Computers
A quantum algorithm based on Haag-Ruelle theory and LCU proposes to prepare hadron wave packets from the vacuum in 3D lattice QCD, with a success probability that shrinks polynomially with lattice spacing, energy, and...
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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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