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Half-life determination of heavy ions in a storage ring considering feeding and depleting background processes
R. J. Chen, G. Leckenby, R. S. Sidhu, J. Glorius, M. S. Sanjari, Yu. A. Litvinov, F. C. Akinci, M. Bai, K. Blaum, F. Bosch, C. Brandau, T. Dickel, I. Dillmann, D. Dmytriiev, T. Faestermann, O. Forstner, B. Franczak, B. S. Gao, H. Geissel, R. Gernh\"auser, C. Griffin, A. Gumberidze, E. Haettner, R. He{\ss}, P. -M. Hillenbrand, P. Kienle, W. Korten, Ch. Kozhuharov, N. Kuzmi…

Half-life determination of heavy ions in a storage ring considering feeding and depleting background processes
Heavy-ion storage rings have relatively large momentum acceptance which allows for multiple ion species to circulate at the same time. This needs to be considered in radioactive decay measurements of highly charged ions, where atomic charge exchange reactions can significantly alter the intensities of parent and daughter ions. In this study, we investigate this effect using the decay curves of ion numbers in the recent $^{205}$Tl$^{81+}$ bound-state beta decay experiment conducted using the Exp…

Exciton Berryology
Henry Davenport, Johannes Knolle, Frank Schindler
https://arxiv.org/abs/2507.22983 https://arxiv.org/pdf/2507.22983

Exciton Berryology
In translationally invariant semiconductors that host exciton bound states, one can define an infinite number of possible exciton Berry connections. These correspond to the different ways in which a many-body exciton state, at fixed total momentum, can be decomposed into free electron and hole Bloch states that are entangled by an exciton envelope wave function. Inspired by the modern theory of polarization, we define an exciton projected position operator whose eigenvalues single out two uniqu…