Axion-photon conversion in space and in low symmetrical dielectric crystals

[摘要] The opportunities of axions detection as the result of axion-photon conversion processes in the space and in low symmetrical dielectric crystals are discussed. In accordance with the modern theory predictions, axions are pseudoscalar vacuum particles having very small (0.001-1.0 meV) rest energy. The possibility of axions conversion into photons and vice-versa processes in vacuum at the presence of outer magnetic field has been analyzed before. Pseudoscalar (axion type) modes are existing in some types of crystals. Polar pseudoscalar lattice and exciton modes in low symmetrical crystals are strongly interacted with axions. In this work, optical excitation of axion-type modes in low symmetrical crystals is proposed for observation of axion - photon conversion processes. Instead of outer magnetic field, the crystalline field of such crystals may be used. The experimental schemes for axion-photon conversion processes observation with recording the secondary emission of luminescence, infrared or Stimulated Raman Scattering in some dielectric crystals are discussed.

[发布机构] P.N. Lebedev Physical Institute of Russian Academy of Sciences, Moscow, Russia^1;Bauman Moscow State Technical University, Moscow, Russia^2

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Exciton modes;Experimental scheme;In-vacuum;Photon conversion;Symmetrical crystals;Theory predictions