Armstrong Gregory S J, Khokhlova Margarita A, Labeye Marie, Maxwell Andrew S, Pisanty Emilio, Ruberti Marco
Centre for Theoretical Atomic, Molecular, and Optical Physics, Queen's University Belfast, Belfast, BT7 1NN UK.
Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Straße 2A, 12489 Berlin, Germany.
Eur Phys J D At Mol Opt Phys. 2021;75(7):209. doi: 10.1140/epjd/s10053-021-00207-3. Epub 2021 Jul 20.
The perceived dichotomy between analytical and ab initio approaches to theory in attosecond science is often seen as a source of tension and misconceptions. This Topical Review compiles the discussions held during a round-table panel at the 'Quantum Battles in Attoscience' cecam virtual workshop, to explore the sources of tension and attempt to dispel them. We survey the main theoretical tools of attoscience-covering both analytical and numerical methods-and we examine common misconceptions, including the relationship between ab initio approaches and the broader numerical methods, as well as the role of numerical methods in 'analytical' techniques. We also evaluate the relative advantages and disadvantages of analytical as well as numerical and ab initio methods, together with their role in scientific discovery, told through the case studies of two representative attosecond processes: non-sequential double ionisation and resonant high-harmonic generation. We present the discussion in the form of a dialogue between two hypothetical theoreticians, a numericist and an analytician, who introduce and challenge the broader opinions expressed in the attoscience community.
在阿秒科学中，人们认为解析方法和从头算方法在理论研究上的二分法常常被视为造成紧张局势和误解的根源。本专题综述汇集了在“阿秒科学中的量子之战”cecam虚拟研讨会上的一次圆桌小组讨论内容，以探究紧张局势的根源并试图消除这些误解。我们概述了阿秒科学的主要理论工具——包括解析方法和数值方法——并审视了常见的误解，其中包括从头算方法与更广泛的数值方法之间的关系，以及数值方法在“解析”技术中的作用。我们还通过两个具有代表性的阿秒过程案例研究——非序列双电离和共振高次谐波产生——来评估解析方法、数值方法和从头算方法的相对优缺点，以及它们在科学发现中的作用。我们以两位假设的理论家（一位数值计算专家和一位解析专家）之间的对话形式呈现讨论内容，他们介绍并质疑了阿秒科学界表达的更广泛观点。
