Tootfinder

Evading Dark Matter Bounds through NLSP-Assisted Freeze-Out with Long-Lived Signatures
Sarif Khan
https://arxiv.org/abs/2506.10618 https://

Evading Dark Matter Bounds through NLSP-Assisted Freeze-Out with Long-Lived Signatures
In this work, we explore a conversion-driven freeze-out scenario, where the next-to-lightest stable particle (NLSP) sets the dark matter (DM) abundance through the process ``NLSP SM $\leftrightarrow$ DM SM". Although DM is produced via a freeze-out mechanism, its interaction strength with the visible sector can range from weak to feeble couplings. This results in a vast, largely unexplored parameter space that evades current direct, indirect, and collider bounds, while remaining testable in the…

🇺🇦 #NowPlaying on KEXP's #MiddayShow
Now Always Fades:
🎵 Close to Greatness
#NowAlwaysFades
https://northernundergroundrecords.bandcamp.com/track/close-to-greatness
https://open.spotify.com/track/6V4Eeco1nM4mLmh5VGifBH

🇺🇦 #NowPlaying on BBCRadio3's #RoundMidnight
Nils Kavanagh:
🎵 No Expectations
#NilsKavanagh
https://open.spotify.com/track/0htvydwx0EbCnqyDY3VTju

🇺🇦 #NowPlaying on #BBC6Music's #MaryAnneHobbs
Nils Frahm:
🎵 Wesen
#NilsFrahm
https://nilsfrahm.bandcamp.com/track/wesen
https://open.spotify.com/track/4AGDYEV7MAnXsdVaYKHkMs

A Bi-Orthogonal Structure-Preserving eigensolver for large-scale linear response eigenvalue problem
Yu Li, Zijing Wang, Yong Zhang
https://arxiv.org/abs/2506.08355

A Bi-Orthogonal Structure-Preserving eigensolver for large-scale linear response eigenvalue problem
The linear response eigenvalue problem, which arises from many scientific and engineering fields, is quite challenging numerically for large-scale sparse/dense system, especially when it has zero eigenvalues. Based on a direct sum decomposition of biorthogonal invariant subspaces and the minimization principles in the biorthogonal complement, using the structure of generalized nullspace, we propose a Bi-Orthogonal Structure-Preserving subspace iterative solver, which is stable, efficient, and o…

🇺🇦 #NowPlaying on BBCRadio3's #NightTracks
F.S. Blumm & Nils Frahm:
🎵 Day One One
#FSBlumm #NilsFrahm

An efficient Fourier spectral algorithm for the Bogoliubov-de Gennes excitation eigenvalue problem
Yu Li, Zhixuan Li, Manting Xie, Yong Zhang
https://arxiv.org/abs/2506.08308

An efficient Fourier spectral algorithm for the Bogoliubov-de Gennes excitation eigenvalue problem
In this paper, we propose an efficient Fourier spectral algorithm for an eigenvalue problem, that is, the Bogoliubov-de Gennes (BdG) equation arsing from spin-1 Bose-Einstein condensates (BEC) to describe the elementary/collective excitations around the mean-field ground state. The BdG equation is essentially a constrained eigenvalue/eigenfunction system. Firstly, we investigate its analytical properties, including exact eigenpairs, generalized nullspace, and bi-orthogonality of eigenspaces. Se…

🇺🇦 #NowPlaying on BBCRadio3's #ThroughTheNight
Iris Szeghy, Andrej Gšl, Slovak Radio Symphony Orchestra & Marišn Lejava:
🎵 Cello Concerto
#IrisSzeghy #AndrejGál #SlovakRadioSymphonyOrchestra #MariánLejava