论文标题

量子场理论的量子模拟

Quantum Simulation of Quantum Field Theory in the Light-Front Formulation

论文作者

Kreshchuk, Michael, Kirby, William M., Goldstein, Gary, Beauchemin, Hugo, Love, Peter J.

论文摘要

量子染色体动力学(QCD)描述了基本水平上质子等质子的结构。 QCD中计算的精度限制了从对撞机数据中提取的许多物理参数的值的精度。例如,Parton分布函数(PDF)的不确定性是LHC $ W $质量测量的主要误差源。提高此类测量的精度对于寻找新物理学至关重要。 量子模拟提供了一种有效研究量子场理论(QFT)的有效方法,例如QCD非扰动。以前用于模拟QFTS的量子算法具有QUT要求,远远超出了大型量子计算机最雄心勃勃的实验建议。是否可以用数千件量子台将此类算法的量子要求进入一系列量子计算?我们展示了如何使用量子场理论的光式公式来实现这一目标。这项工作的灵感来自肯尼斯·威尔逊(Kenneth Wilson)首先指出的轻型配方与量子化学的相似性。

Quantum chromodynamics (QCD) describes the structure of hadrons such as the proton at a fundamental level. The precision of calculations in QCD limits the precision of the values of many physical parameters extracted from collider data. For example, uncertainty in the parton distribution function (PDF) is the dominant source of error in the $W$ mass measurement at the LHC. Improving the precision of such measurements is essential in the search for new physics. Quantum simulation offers an efficient way of studying quantum field theories (QFTs) such as QCD non-perturbatively. Previous quantum algorithms for simulating QFTs have qubit requirements that are well beyond the most ambitious experimental proposals for large-scale quantum computers. Can the qubit requirements for such algorithms be brought into range of quantum computation with several thousand logical qubits? We show how this can be achieved by using the light-front formulation of quantum field theory. This work was inspired by the similarity of the light-front formulation to quantum chemistry, first noted by Kenneth Wilson.

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