#primordial non-gaussianity
5 papers · 1 filter
Searching for signatures of inflationary massive fields in DESI Imaging data and Stage-V galaxy surveys
Walter Riquelme, Santiago Avila, Lucas Pinol +2
The paper studies how massive fields present during inflation could leave detectable signatures in galaxy clustering, using DESI imaging data and forecasting the capability of futu…
New exact bispectrum shapes in multifield inflation
Lucas Pinol
The paper presents an analytical, non‑perturbative calculation of the primordial bispectrum in multifield inflation, deriving integral representations for mixed curvature‑isocurvat…
Pushing the Primordial Frontier: Cosmological Collider Signatures at Strong Mixing
Javier Huenupi, Claudio Muñoz, Gonzalo A. Palma +1
The paper presents an analytic method to study primordial non‑Gaussianity in multifield inflation that fully accounts for strong curvature‑isocurvature mixing, providing exact bisp…
Mitigating galaxy systematics with gravitational wave clustering
Caterina Scarpel, Nicola Bellomo, Sarah Libanore +2
The paper demonstrates that clustering of gravitational‑wave events can be used as a complementary tracer to galaxies, reducing systematic errors and improving constraints on local…
The Limitations of Cosmological Collider Analyses
Oliver H. E. Philcox
The paper evaluates how observable the scalar cosmological collider signals are by comparing precise numerical bispectrum predictions with Planck data, showing that weak mixing yie…