1 citations · 1 across the 12 of their papers we have counts for
12 papers
New Isocurvature Constraints from JWST UV Luminosity Function
Raymond T. Co, Sai Chaitanya Tadepalli
We constrain uncorrelated primordial isocurvature perturbations using a combination of large- and small-scale cosmological probes, with the small-scale data provided by the ultravi…
Axions on a Hyperbolic Ride: Geometric Suppression of CMB Isocurvature and a Blue-Tilted Spectrum
Sai Chaitanya Tadepalli
CMB limits on cold-dark-matter isocurvature are often interpreted as excluding the simultaneous realization of high-scale inflation and large QCD axion decay constants in pre-infla…
Reviving sub-keV warm dark matter: a UVLF-based analysis
Raymond T. Co, Siu Cheung Lam, Sai Chaitanya Tadepalli +1
Thermal warm dark matter (WDM) particles with are ruled out at more than by multiple observational probes, owing to the strong suppression of…
Warm Dark Matter meets Cold Dark Matter Isocurvature
Sai Chaitanya Tadepalli, Tomo Takahashi
Isocurvature fluctuations can be generated in various scenarios in the early Universe. In particular, some specific models predict those with a blue-tilted spectrum, which is consi…
Test-time Scaling Techniques in Theoretical Physics -- A Comparison of Methods on the TPBench Dataset
Zhiqi Gao, Tianyi Li, Yurii Kvasiuk +5
Large language models (LLMs) have shown strong capabilities in complex reasoning, and test-time scaling techniques can enhance their performance with comparably low cost. Many of t…
Theoretical Physics Benchmark (TPBench) -- a Dataset and Study of AI Reasoning Capabilities in Theoretical Physics
Daniel J. H. Chung, Zhiqi Gao, Yurii Kvasiuk +5
We introduce a benchmark to evaluate the capability of AI to solve problems in theoretical physics, focusing on high-energy theory and cosmology. The first iteration of our benchma…
Non-Gaussianity from explicit -breaking interactions
Raymond T. Co, Taegyu Lee, Sai Chaitanya Tadepalli
We investigate primordial non-Gaussianity (NG) arising from the explicit symmetry-breaking interactions during inflation involving a nearly massless axial component of a com…
Large Blue Spectral Index From a Conformal Limit of a Rotating Complex Scalar
Daniel J. H. Chung, Sai Chaitanya Tadepalli
One well known method of generating a large blue spectral index for axionic isocurvature perturbations is through a flat direction not having a quartic potential term for the radia…
Cosmological constraints from harmonic space analysis of DES Y3 3x2 clustering
Utkarsh Giri, Sai Chaitanya Tadepalli
The large-scale distribution of matter, as mapped by photometric surveys like the Dark Energy Survey (DES), serves as a powerful probe into cosmology. It is especially sensitive to…
Power Spectrum in the Chaotic Regime of Axionic Blue Isocurvature Perturbations
Daniel J. H. Chung, Sai Chaitanya Tadepalli
Large blue tilted spectral index axionic isocurvature perturbations can be produced when the axion sector is far out of equilibrium during inflation through an initial Peccei-Quinn…
Search for Isocurvature with Large-scale Structure: A Forecast for Euclid and MegaMapper using EFTofLSS
Daniel J. H. Chung, Moritz Münchmeyer, Sai Chaitanya Tadepalli
Isocurvature perturbations with a blue power spectrum are one of the natural targets for the future large scale structure observations which are probing shorter length scales with…
An Analytic Treatment of Underdamped Axionic Blue Isocurvature Perturbations
Daniel J. H. Chung, Sai Chaitanya Tadepalli
Previous computations of strongly blue tilted axionic isocurvature spectra were computed in the parametric region in which the lightest time-dependent mass is smaller than the Hubb…