This July, an article written by researches of the Department of Theoretical Physics appeared. We grieve that our co-author V.N. Gorelkin will not see it published.
Muon spin rotation/relaxation/resonance (MuSR) technique for studying matter structures is considered by means of a recently introduced probability representation of quantum spin states. A relation between experimental MuSR histograms and muon spin tomograms is established. Time evolution of muonium, anomalous muonium, and a muonium-like system is studied in the tomographic representation. Entanglement phenomenon of a bipartite muon-electron system is investigated via tomographic analogues of Bell number and positive partial transpose (PPT) criterion. Reconstruction of the muon-electron spin state as well as the total spin tomography of composed system is discussed.
Article details: Yu. M. Belousov, S. N. Filippov, V. N. Gorelkin, V. I. Man'ko, MuSR method and tomographic probability representation of spin states, arXiv:1007.3814v1 [quant-ph]
Article is available online at http://arxiv.org/abs/1007.3814