Modeling of axion and electromagnetic fields interaction in particle-in-cell simulations  

作　　者：Xiangyan An Min Chen Jianglai Liu Zhengming Sheng Jie Zhang 

机构地区：[1]Key Laboratory for Laser Plasmas(MoE),School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China [2]Collaborative Innovation Center of IFSA,Shanghai Jiao Tong University,Shanghai 200240,China [3]Tsung-Dao Lee Institute,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Matter and Radiation at Extremes》2024年第6期61-69,共9页极端条件下的物质与辐射（英文）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.12225505 and 11991074)。

摘　　要：The axion,a theoretically well-motivated particle,has been searched for extensively via its hypothetical interactions with ordinary matter and fields.Recently,a new axion detection approach has been considered utilizing the ultra-intense electromagnetic fields produced by laser-plasma interactions.However,a detailed simulation tool has not hitherto been available to help understand the axion-coupled laser-plasma interactions in such a complex environment.In this paper,we report a custom-developed particle-in-cell(PIC) simulation method that incorporates the axion field,the electromagnetic fields,and their interactions.The axion field equation and modified Maxwell's equations are numerically solved,with the axion-induced modulation of the electromagnetic field being treated as a first-order perturbation to handle the huge orders of magnitude difference between the two types of field.The simulation is benchmarked with well-studied effects such as axion-photon conversion and the propagation of an extremely weak laser pulse in a magnetized plasma.Such an extended PIC simulation provides a powerful tool to study axions under ultra-intense electromagnetic fields in the laboratory or in astrophysical processes.

关 键 词：field. PARTICLE INTENSE 

分 类 号：TN24[电子电信—物理电子学] O53[理学—等离子体物理]