Portal de Periódicos da CAPES

Analysis method for detecting topological defect dark matter with a global magnetometer network

2020; Elsevier BV; Volume: 28; Linguagem: Inglês

10.1016/j.dark.2020.100494

2212-6864

Hector Masia‐Roig, Joseph A. Smiga, Dmitry Budker, Vincent Dumont, Z. D. Grujić, Dongok Kim, Derek F. Jackson Kimball, Victor Lebedev, Madeline Monroy, Szymon Pustelny, Theo Scholtes, Perrin Segura, Yannis K. Semertzidis, Yun Chang Shin, J. E. Stalnaker, Ibrahim Sulai, A. Weis, Arne Wickenbrock,

Cold Atom Physics and Bose-Einstein Condensates

The Global Network of Optical Magnetometers for Exotic physics searches (GNOME) is a network of time-synchronized, geographically separated, optically pumped atomic magnetometers that is being used to search for correlated transient signals heralding exotic physics. GNOME is sensitive to exotic couplings of atomic spins to certain classes of dark matter candidates, such as axions. This work presents a data analysis procedure to search for axion dark matter in the form of topological defects: specifically, walls separating domains of discrete degenerate vacua in the axion field. An axion domain wall crossing the Earth creates a distinctive signal pattern in the network that can be distinguished from random noise. The reliability of the analysis procedure and the sensitivity of the GNOME to domain-wall crossings are studied using simulated data.