用微机械振荡器测量有效Casimir压力来约束轴子-核子耦合常数
Constraining axion-nucleon coupling constants from measurements of effective Casimir pressure by means of micromachined oscillator
摘要：
利用微机械扭转振子间接测量了两个镀金板之间的有效Casimir压力，得到了轴子与质子和中子的赝标耦合常数的较强约束。为此，计算了由于两个轴子交换的附加有效压力。边界效应的作用和有效区域的邻近力近似的应用程序的力的轴子起源的确定。得到的约束比最近从其他实验室实验中发现的强380和3.15倍，并且与从$10^{-3}$ eV到15 eV的轴子质量有关。
英文摘要：
Stronger constraints on the pseudoscalar coupling constants of an axion to a proton and a neutron are obtained from an indirect measurement of the effective Casimir pressure between two Au-coated plates by means of micromechanical torsional oscillator. For this purpose, the additional effective pressure due to two-axion exchange is calculated. The role of boundary effects and the validity region of the proximity force approximation in application to forces of axion origin are determined. The obtained constraints are up to factors of 380 and 3.15 stronger than those found recently from other laboratory experiments and are relevant to axion masses from $10^{-3}$eV to 15eV.
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