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arXiv 2303.00568physics.plasm-phphysics.optics
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用强激光对强场量子电动力学进行统计检验的展望

Prospects for statistical tests of strong-field quantum electrodynamics with high-intensity lasers

Christoffer Olofsson, Arkady Gonoskov

摘要:

利用高能电子束碰撞成高强度激光脉冲带来了一个机会,达到高值的无量纲静止框架加速度$χ$,从而调用强场量子电动力学(SFQED)描述的过程。在高$χ$下测量微扰SFQED结果的偏差对于检验现有的预测以及指导进一步的理论发展是有价值的。然而,由于相互作用过程的概率性质、由低- $χ$相互作用产生的强背景以及在这种碰撞实验中控制和测量对准和同步的有限能力,这种实验测量是具有挑战性的。在这里,我们阐述了一种方法,使用近似贝叶斯计算(ABC)检索统计合理的推论的基础上,许多重复的实验结果,即使在部分未知的碰撞参数,从实验到实验的情况下。作为一个原则的证明,我们考虑的问题推断的有效质量变化,由于耦合与强场环境。

英文摘要:

Exploiting high-energy electron beams colliding into high-intensity laser pulses brings an opportunity to reach high values of the dimensionless rest-frame acceleration $χ$ and thereby invoke processes described by strong-field quantum electrodynamics (SFQED). Measuring deviations from the results of perturbative SFQED at high $χ$ can be valuable for testing the existing predictions, as well as for guiding further theoretical developments. Nevertheless such experimental measurements are challenging due to the probabilistic nature of the interaction processes, a strong background produced by low-$χ$ interactions and limited capabilities to control and measure the alignment and synchronization in such collision experiments. Here we elaborate a methodology of using approximate Bayesian computations (ABC) for retrieving statistically justified inferences based on the results of many repeated experiments even in case of partially unknown collision parameters that vary from experiment to experiment. As a proof of principles, we consider the problem of inferring the effective mass change due to coupling with strong-field environment.

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