Cross correlations of electric, magnetic and flow fields in superfluid helium

这项工作旨在通过静电场和磁场在超流4He中产生人工规范场。在中性超流体中，人们可能会看到电场、磁场和超流场(E，H，VS)的互相关效应：例如，VS是由E×H产生的。为了研究这种互相关效应，我们建造了一个旋转的低温恒温器，在装置的旋转下可以施加电场和磁场，以及一个扭转振荡器来检测超流。我们尝试利用超流第二声的多普勒频移来探测由E×H引起的超流。

This work aims at producing an artificial gauge field in superfluid 4He by static electric and magnetic fields. In neutral superfluids one may expect cross-correlation effects of electric, magnetic, and superflow fields (E, H, vs): e.g. vs is produced by E x H. In order to study such cross correlation effects, we have constructed a rotating cryostat in which electric and magnetic fields can be applied under rotation of the apparatus, and a torsional oscillator device for detection of superfluidity. We try to detect superflow induced by E x H using the Doppler shift of superfluid second sound.