Specialty
An arXiv preprint reports that the apparent unevenness in fast radio burst positions is compatible with isotropy after Galactic masking and survey-specific selection functions are applied. The authors warn that a correction learned from the observed sky could also absorb genuine anisotropy aligned with a survey footprint.
Scientific publication3 min read
A numerical preprint reports that nonperturbative lattice evolution changes predicted scalar-induced gravitational-wave spectra in the high-amplitude part of a selected inflation model. The result also shifts the model comparison with selected NANOGrav pulsar-timing data, but remains bounded by a finite scan, finite lattice and chosen inference assumptions.
Scientific publication3 min read
An arXiv preprint describes SPT-3G+, a planned receiver for the 10-meter South Pole Telescope. Its model-based forecasts cover cosmic microwave background mapping, lensing, delensing, galaxy clusters and transient monitoring, but no deployed-instrument results are reported.
Scientific publication6 min read
A theoretical preprint models a brief, unusual phase in a subdominant dark-matter component. The calculation predicts more high-redshift halos and lower fitted star-formation efficiency, but the combined cosmological data do not significantly favor the model over ΛCDM.
Scientific publication4 min read
An arXiv preprint explores warm inflation in two related descriptions of gravity. It reports that the Einstein-frame effective dissipation ratio can be smaller, allowing high-temperature cases that are strongly dissipative in the defining frame to retain quantum-dominated scalar perturbations.
Scientific publication4 min read
An arXiv methods preprint says comparing radial and transverse BAO measurements can expose a constant calibration offset that transverse-only fits cannot see. It reports a 5.4% difference between two SDSS transverse catalogues and unusually large scatter in the MM compilation, while interpreting the pattern as a calibration and error-model problem rather than new physics.
Scientific publication4 min read