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Author  |
Martinez de Lejarza, J.J.; Renteria-Estrada, D.F.; Grossi, M.; Rodrigo, G. |
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Title |
Quantum integration of decay rates at second order in perturbation theory |
Type |
Journal Article |
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Year |
2025 |
Publication |
Quantum Science and Technology |
Abbreviated Journal |
Quantum Sci. Technol. |
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Volume |
10 |
Issue |
2 |
Pages |
025026 - 9pp |
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Keywords |
quantum machine learning; quantum amplitude estimation; high-energy-physics |
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Abstract |
We present the first quantum computation of a total decay rate in high-energy physics at second order in perturbative quantum field theory. This work underscores the confluence of two recent cutting-edge advances. On the one hand, the quantum integration algorithm quantum Fourier iterative amplitude estimation, which efficiently decomposes the target function into its Fourier series through a quantum neural network before quantumly integrating the corresponding Fourier components. On the other hand, causal unitary in the loop-tree duality (LTD), which exploits the causal properties of vacuum amplitudes in LTD to coherently generate all contributions with different numbers of final-state particles to a scattering or decay process, leading to singularity-free integrands that are well suited for Fourier decomposition. We test the performance of the quantum algorithm with benchmark decay rates in a quantum simulator and in quantum hardware, and find accurate theoretical predictions in both settings. |
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Address |
[de Lejarza, Jorge J. Martinez; Renteria-Estrada, David F.; Rodrigo, German] Univ Valencia, Consejo Super Invest Cient, Inst Fis Corpuscular, Parc Cientif, E-46980 Paterna, Valencia, Spain, Email: jormard@ific.uv.es |
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Publisher |
IOP Publishing Ltd |
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Language |
English |
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Original Title |
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Series Volume |
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ISSN |
2058-9565 |
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Notes |
WOS:001422028200001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6526 |
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