Particle Seminar: Wolfram Ratzinger (Weizmann Institute) “Nelson-Barr ultralight dark matter”
Nelson-Barr ultralight dark matter Light scalar fields are well motivated dark matter candidates, as they commonly arise as pseudo-Goldstone bosons and their abundance is set by the misalignment mechanism. The best known example is perhaps the celebrated QCD axion, further motivated as a solution to the strong CP-problem. I will discuss how in the orthogonal Nelson-Bar solution to the strong … Read More