12 pages, 1 figures. v2: expanded discussion and reorganized some sections; fixed discussion about destruction of the condensate; accepted for publication in JHEP
We consider using particle production as a friction force by which to implement a "Relaxion" solution to the electroweak hierarchy problem. Using this approach, we are able to avoid superplanckian field excursions and avoid any conflict with the strong CP problem. The relaxation mechanism can work before, during or after inflation allowing for inflationary dynamics to play an important role or to be completely decoupled.
About possible influence of birefringence effect on processes of production (photoproduction, electroproduction) of vector mesons (particles with the spin S greater or equal then 1) in nuclei
Coherent and Stochastic Axion Dark Matter from Thermal Relaxation
Shanxi Technology and Business University（山西工商学院）；Yildiz Technical University（伊尔迪兹理工大学）；Walailak University（瓦拉莱克大学）；Harbin Institute of Technology（哈尔滨工业大学）；Kimyo International University in Tashkent（塔什干基莫国际大学）；Istanbul University（伊斯坦布尔大学）
Formation and relaxation of halos in the context of wave DM particles evolving on a background of neutrino condensate
Dipartimento di Fisica “E.R. Caianiello” Universitá di Salerno, and INFN – Gruppo Collegato di Salerno（萨莱诺大学物理系与意大利国家核物理研究院萨莱诺协作组）；Universidad de Salamanca（萨拉曼卡大学）；Insituto Universitario de Física Fundamental y Matemáticas (IUFFyM), Universidad de Salamanca（萨拉曼卡大学基础物理与数学大学研究所）；CENTRA, Departamento de Física, Instituto Superior Técnico – IST Universidade de Lisboa – UL（里斯本大学技术研究所物理中心）；University of Camerino（卡梅里诺大学）
