Specialty
A model fitted to DESI Full-Shape measurements finds a modest increase in the inferred matter-density parameter with redshift. Current tests do not clearly prefer that trend over a constant value, and the dark-energy interpretation remains model-dependent.
Scientific publication5 min read
A three-dimensional neural network inferred averaged cosmological quantities from present-day simulated matter maps, including parameters linked to curvature and backreaction. Its predictions tracked the simulations closely, but the study is only a proof of principle because the training data were too simplified for sensible use on observations.
Scientific publication4 min read
A cosmology preprint reports overwhelming statistical support for GPAge expansion histories after CMB distances are included, while stressing that the fitted pattern still needs fuller tests.
Scientific publication3 min read
A topology-based simulation test distinguished collisionless and self-interacting dark matter around massive halos, but the contrast faded on larger scales.
Scientific publication5 min read
A methods preprint proposes choosing the redshift where the dark-energy equation of state sits farthest from w = −1 relative to its uncertainty, and its illustrative application gives a higher one-dimensional significance than the pivot.
Scientific publication3 min read
An arXiv analysis found prior-sensitive estimates for early-Universe energy injection and primordial non-Gaussianity, while scale-dependent running remained unconstrained.
Scientific publication3 min read
A preprint analysis of five ΛCDM simulations finds systematic differences between cosmic-web sub-filaments and parent filaments in density, inflow, angular momentum and velocity spread.
Scientific publication4 min read
A cosmology preprint derives a finite, conditional upper limit on the distance a canonical scalar can travel during continuous non-attractor inflation.
Scientific publication3 min read
A preprint applying an optimal-redshift method to 15 cosmological dataset combinations reports a model-dependent pattern on both sides of the w = −1 benchmark, while the two sides come from different combinations and model fits.
Scientific publication3 min read
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