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SN-WER: Script-Normalized WER for Multi-Script Indic ASR Evaluation
arXiv:2606.02548v1 Announce Type: new Abstract: Word Error Rate (WER) is the dominant metric for automatic speech recognition (ASR), but it can overestimate errors when references and hypotheses encode the same words in different scripts. This issue is common in multilingual settings where ASR models may emit romanized text.
Parity non-conservation in isotope chain of tin
arXiv:2605.26378v2 Announce Type: replace Abstract: We calculate parity non-conservation (PNC) amplitudes for all magnetic-dipole (M1) transitions within the ground $5p^2$ configuration of Sn. Among the transitions considered, the $^1$S$_0$-$^3$P$_1$ transition has the largest PNC amplitude and appears to be the most promising candidate for experiment. We also discuss a measurement method capable of achieving unprecedentedly high precision in a measurement of PNC in this transition.
ZX-Calculus:Trace-Indexed Dependent Types and Epistemic Semantics
Announce Type: new Abstract: We propose ZX-Calculus (Knowledge Evolution Calculus), a conservative extension of Martin-Lof Dependent Type Theory (MLTT) integrating trace-indexed types, presheaf non-monotone semantics, and constructive AGM belief revision. A Coq mechanisation accompanies the paper (34 complete proofs; zero admits for the two central results). FinTrace(s0,sn) is an inductive family of typed execution traces.
NASA’s Fermi telescope reveals the power source behind monster supernovae
NASA’s Fermi telescope has detected what may be the first confirmed gamma-ray signal from a superluminous supernova — one of the most extreme explosions in the universe. Scientists believe the blast was powered by a rapidly spinning magnetar, an exotic neutron star with unbelievably strong magnetic fields. The event, called SN 2017egm, erupted 440 million light-years away and may help explain why some supernovae become extraordinarily bright.
Resolving the Blueshift in Calculations of the EUV Spectrum of Multiply Charged Tin Ions
arXiv:2606.04868v1 Announce Type: new Abstract: We report ab initio relativistic calculations on the complex open shell Sn$^{12+}$ highly charged ion, a prototypical plasma ion relevant for extreme ultraviolet (EUV) nanolithography. Previous calculations of EUV emissivity in tin plasmas consistently generate a spectrum in which the region of peak emissivity is blueshifted relative to experiment. By optimising our numerical methods to take full advantage of modern, high-performance CPU...
40% boost in extreme ultraviolet conversion efficiency via simultaneous dual-beam 2-{\mu}m laser irradiation
Announce Type: new Abstract: Scaling extreme ultraviolet (EUV) source power for next-generation lithography demands higher conversion efficiency (CE) at reduced per-pulse energies. We demonstrated a 40% CE enhancement by simultaneous dual-beam irradiation of a planar Sn target with a 2090-nm, 20-ns Ho:YAG laser. Single-beam irradiation at 40 mJ yielded an EUV CE of 2.6%; splitting the same total energy equally into two beams of 20 mJ each - at identical peak intensity - raised the EUV CE to...
Nucleoporin1 maintains male germ unit organization and transport in Arabidopsis pollen tubes, likely through shaping nuclear morphology
The male germ unit (MGU) in Arabidopsis pollen is comprised of one vegetative nucleus (VN) and two sperm nuclei (SN). It is evolutionarily specialized to deliver immotile sperm nuclei to an ovule for fertilization. Despite some progress in research on MGU, its organization and transport remain only partially understood.
A giant star may have destroyed itself in one of the universe's rarest explosions
June 1, 2026 report A giant star may have destroyed itself in one of the universe's rarest explosions Shreejaya Karantha Author Sadie Harley Scientific Editor Robert Egan Associate Editor Astronomers may have discovered one of the clearest examples yet of a rare "pair-instability" supernova. It is a catastrophic explosion thought to completely destroy some of the most massive stars in the universe, leaving behind no remnant. The paper outlining the properties of this rare explosion was...