论文标题
违反奇偶校验和超导体的新物理
Parity violation and new physics in superconductors
论文作者
论文摘要
我们提出了一种使用Andreev在超导体上的Andreev反射来衡量由标准电动eaweak理论引起的均衡违规行为的新方法，这又限制了新物理学的可能奇偶校验效应。弱中性电流在超导体中诱导平等侵入，边缘有效的算子，尽管很小。我们估计它们对超导间隙的影响，并提出了一种从自旋极化效应中测量平均侵入效应的方法，当电子或孔在正常金属和超导体之间的界面上换成Andreev反射时。这种极化效应可能与原子奇偶校验违规相提并论，因此自然会在某些新物理学模型上具有有趣的束缚，即与电子（例如主动中微子的主要质量或双重带电的希格）伴侣。
We propose a new method, using the Andreev reflection at superconductors, to measure parity violation induced by the standard electroweak theory, which in turn constrains the possible parity-violating effects of new physics. The weak neutral currents induce parity-violating, marginal effective operators, though quite tiny, in superconductors. We estimate their effects on superconducting gaps and propose a method to measure the parity-violation from the spin polarization effect, when electrons or holes get Andreev-reflected at the interface between normal metal and a superconductor. Such polarization effects might be comparable to the atomic parity violation and thus naturally give an interesting bound on certain models of new physics, that couples to electrons, such as Majorana mass of active neutrinos or doubly charged Higgs.
