Kavli Affiliate: Alexey Bondal | Summary:In this paper we present criteria in terms of dual pairs of exceptional sequences for an abelian category to be highest weight. The criteria are applied in three situations of geometric origin. We give new proofs for the facts that the category of perverse sheaves of middle perversity on complex-analytic […]
Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Large Vision-Language Models (LVLMs) are widely adopted for their strong multimodal capabilities, yet they raise serious concerns such as privacy leakage and harmful content generation. Machine unlearning has emerged as a promising solution for removing the influence of specific data from trained […]
Kavli Affiliate: Alexander Ji | Summary:Extremely metal-poor stars are intrinsically rare, but emerging methods exist to accurately classify them from all-sky Gaia XP low-resolution spectra. To assess their overall accuracy for targeting metal-poor stars, we present a high-resolution spectroscopic followup of 75 very metal-poor candidates selected from the catalog by R. Andrae, V. Chandra, and […]
Kavli Affiliate: Loren Frank | Authors: Kyu Hyun Lee, Eric L. Denovellis, Ryan Ly, Jeremy Magland, Jeff Soules, Alison E Comrie, Daniel P Gramling, Jennifer A Guidera, Rhino Nevers, Philip Adenekan, Chris Brozdowski, Samuel R Bray, Emily Monroe, Ji Hyun Bak, Michael Coulter, Xulu Sun, Emrey Broyles, Donghoon Shin, Sharon Chiang, Cristofer Holobetz, Andrew Tritt, […]
Kavli Affiliate: Michael Goldberg | Authors: Peter McHale, Michael E Goldberg and Aaron R Quinlan | Summary: A longstanding goal in human genetics is to prioritize noncoding loci that, when disrupted, lead to developmental disorders and other Mendelian traits. In pursuit of this goal, multiple metrics have been developed to distinguish neutrally evolving sequences from […]
Kavli Affiliate: Edvard Moser and May-Britt Moser | Authors: Abraham Z. Vollan, Michael F. Schellenberger, May-Britt Moser and Edvard I. Moser | Summary: Spatial attention supports navigation by prioritizing information from selected locations. A candidate neural mechanism is provided by theta-paced sweeps in grid– and place-cell population activity, which sample nearby space in a left-right-alternating […]
Kavli Affiliate: Gordan Krnjaic | Summary:Many early universe scenarios predict post-inflationary tensor perturbations from causality-limited, sub-horizon sources. While the microphysical details may differ, as long as these sources are bounded in duration and correlation length, their tensor power spectra exhibit a universal scaling behavior at small wavenumber: $P_h(k) propto k^3$, corresponding to white noise on […]
Kavli Affiliate: Gordan Krnjaic | Summary:Many early universe scenarios predict post-inflationary tensor perturbations from causality-limited, sub-horizon sources. While the microphysical details may differ, as long as these sources are bounded in duration and correlation length, their tensor power spectra exhibit a universal scaling behavior at small wavenumber: $P_h(k) propto k^3$, corresponding to white noise on […]
Kavli Affiliate: Gordan Krnjaic | Summary:Non-inflationary sources of gravitational waves in the early Universe generically predict causality-limited tensor power spectra at low frequencies. We report the first-ever constraints on such sources based on cosmic microwave background (CMB) $B$-mode polarization measurements. Using data from BICEP/Keck, SPTpol, SPT-3G, Planck, and WMAP, we constrain the amplitude of an […]
Kavli Affiliate: Robert Simcoe | Summary:The central engines of Little Red Dots (LRDs) may be “black hole stars" (BH*s), early stages of black hole growth characterized by dense gas envelopes. So far, the most direct evidence for BH*s comes from a handful of sources where the host galaxy is completely outshone as suggested by their […]