标题： 面向反质子原子的精密光谱学以探测强场QED 显示英文标题

标题： Towards Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-field QED

摘要： PAX（反质子原子X射线谱学）是一项新实验，旨在通过进行反质子原子的高精度X射线谱学来检验强场量子电动力学（QED）效应。 通过利用先进的微热量计检测技术以及由CERN的ELENA环提供的低能反质子束，将使用气体靶来产生反质子原子，并将使用高纯度锗探测器进行圆周里德伯态之间跃迁的测量，其精度比以前的研究提高了两个数量级。 我们的方法消除了长期以来阻碍使用高电荷离子进行先前研究的核不确定性，从而实现了直接且纯粹的QED相关测量。 通过精确探测电场高达施温格极限两倍以上的原子系统，PAX将检验真空极化和二阶QED修正，开辟基础物理的新前沿，并揭示可能通往标准模型之外物理学的途径。 显示英文摘要

摘要： PAX (antiProtonic Atom X-ray spectroscopy) is a new experiment with the aim to test strong-field quantum electrodynamics (QED) effects by performing high-precision x-ray spectroscopy of antiprotonic atoms. By utilizing advanced microcalorimeter detection techniques and a low-energy antiproton beam provided by the ELENA ring at CERN, gaseous targets will be used for the creation of antiprotonic atoms, and the measurement of transitions between circular Rydberg states will be conducted with up to two orders of magnitude improved accuracy over previous studies using high-purity germanium detectors. Our approach eliminates the longstanding issue of nuclear uncertainties that have hindered prior studies using highly charged ions, thus enabling direct and purely QED-focused measurements. By precisely probing atomic systems with electric fields up to two orders of magnitude above the Schwinger limit, PAX will test vacuum polarization and second-order QED corrections, opening new frontiers in fundamental physics and uncovering potential pathways to physics beyond the Standard Model.