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physics.atom-ph2026
Origin of the inhomogeneous linewidth in a solid state Th:CaF nuclear clock
Kai Li, Tian Ooi, Jack F. Doyle +7
Narrow linewidth (high-Q) quantum discriminators are essential for realizing solid-state Th nuclear clocks, yet the observed transition linewidths remain at the tens-to-hun…
cond-mat.str-el2026
Quantum Critical Solids
Subham Dutta Chowdhury, Leo Radzihovsky, Luca V. Delacrétaz
We study the fate of quantum solids with a vanishing velocity of transverse phonons. Such ``floppy'' solids exhibit a cubic elastic nonlinearity that is relevant in spatial dimensi…