AI 中文总结
本研究利用带超高电子自旋密度的悬浮磁力传感器，结合自旋源与多层磁屏蔽系统，对标准模型扩展预言的两类自旋-自旋-速度相关奇异相互作用施加了较此前提升12至13个数量级的严格约束。
AI 中文摘要
自旋-自旋-速度相关的奇异相互作用是包含新玻色场的标准模型扩展理论所预言的，这类相互作用有望解决从暗物质到宇宙不对称性等一系列基础难题。然而，在厘米尺度下探究这些微弱的潜在相互作用面临着巨大挑战，主要原因是电磁背景信号占绝对主导，极易掩盖微弱的奇异信号。本文中，我们采用具有超高电子自旋密度的悬浮磁力传感器来探测这类相互作用。我们通过设计的自旋源以及可抑制电磁背景的多层磁屏蔽系统，分别对两种相互作用进行约束。本研究约束了两类相互作用：力程在$10^{-3}$米至$6 \times 10^{-2}$米范围内的V_6势，以及力程大于$10^{-3}$米的V_{14}势。我们的测量在$λ= 1.6 \times 10^{-2}$米的条件下，确立了95%置信水平的约束边界：$|f_6| \leq 2.12 \times 10^{-13}$、$|f_{14}| \leq 2.34 \times 10^{-23}$，较此前的约束极限分别提升了最高12个和13个数量级。该研究结果表明，悬浮磁体是探测标准模型扩展理论中新玻色场的高灵敏度探针。
英文摘要
Exotic spin-spin-velocity-dependent interactions, predicted in extensions of the Standard Model involving new bosonic fields, could resolve fundamental puzzles from dark matter to cosmic asymmetry. However, exploring these weak potential interactions at centimeter scales presents formidable challenges, primarily due to the overwhelming dominance of electromagnetic backgrounds that can easily obscure the weak exotic signals. Here, we utilize a levitated magnet force sensor with ultrahigh electron spin density to probe these interactions. We constrain two interactions individually through a designed spin source and a multi-layer magnetic shielding system that suppresses electromagnetic backgrounds. In this study, we constrain two types of interactions: the V_6 potential at force ranges from $10^{-3}$ m to $6 \times 10^{-2}$ m and the V_{14} potential at ranges greater than $10^{-3}$ m. Our measurements establish 95% confidence-level bounds of $|f_6| \leq 2.12 \times 10^{-13}$ and $|f_{14}| \leq 2.34 \times 10^{-23}$ at $λ= 1.6 \times 10^{-2}$ m, improving prior limits by up to 12 and 13 orders of magnitude, respectively. Our result demonstrates the levitated magnet as a highly sensitive probe for detecting new bosonic fields in extensions of the Standard Model.
Comments8 pages, 5 figures, 1 table
