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Polariton spectroscopy at the diamond K-edge via X-ray parametric down-conversion
arXiv:2606.02619v1 Announce Type: new Abstract: It has recently been shown that x-ray parametric down-conversion (XPDC) provides access to high-energy polaritons, resulting from the hybridization of down-converted photons with electronic excitations in a nonlinear medium. Here, we present a spectrally resolved study of this effect around the K-shell absorption edge in diamond. Our results exhibit pronounced signatures of polaritonic hybridization, which we visualize by introducing a...
Relaxation Kernel, Spectral Dissipation, and Global Convergence of Blahut--Arimoto Dynamics
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Inferring DAGs and Phylogenetic Networks from Least Common Ancestors
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Sharp description of local minima in the loss landscape of high-dimensional two-layer ReLU neural networks
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Blow-ups of order types of positive density
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Universal consistency of the $k$-NN rule in metric spaces and Nagata dimension. III
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Should you normalize RGB values by 255 or 256?
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Abstract Sirtuins are deacetylases implicated in stress responses and longevity in mammals1,2. Although their differential impact on disease for the two sexes has been noted3,4,5,6,7, the underlying reasons are unclear. Here, using Sirt7 as a model in mice, we examine the mechanisms leading to sex differences and find that Sirt7−/− female mice have decreased fitness throughout their lifespan.