Extensive analysis of reconstruction algorithms for DESI 2024 baryon acoustic oscillations
Reconstruction of the baryon acoustic oscillation (BAO) signal has been a standard
procedure in BAO analyses over the past decade and has helped to improve the BAO …
procedure in BAO analyses over the past decade and has helped to improve the BAO …
Monge-Ampère gravity: From the large deviation principle to cosmological simulations through optimal transport
We study Monge-Ampère gravity (MAG) as an effective theory of cosmological structure
formation through optimal transport theory. MAG is based on the Monge-Ampère equation, a …
formation through optimal transport theory. MAG is based on the Monge-Ampère equation, a …
Leveraging protohalos and scale-dependent bias to calibrate the BAO scale in real space
S Gaines, F Nikakhtar, N Padmanabhan, RK Sheth - Physical Review D, 2024 - APS
The location of the baryon acoustic oscillation (BAO) feature in the two-point correlation
function (2PCF) of matter produces a standard ruler that is useful for the measurement of the …
function (2PCF) of matter produces a standard ruler that is useful for the measurement of the …
Monge-Ampère gravity, optimal transport theory, and their link to the Galileons
A Bonnefous, Y Brenier, R Mohayaee - Physical Review D, 2024 - APS
Mathematicians have been proposing for some time that the Monge-Ampère equation, a
nonlinear generalization of the Poisson equation, where a trace of the Hessian is replaced …
nonlinear generalization of the Poisson equation, where a trace of the Hessian is replaced …
Eigen-decomposition of covariance matrices: An application to the BAO linear point
J Lee, F Nikakhtar, A Paranjape, RK Sheth - Physical Review D, 2024 - APS
The baryon acoustic oscillations (BAO) feature in the two-point correlation function (TPCF) of
discrete tracers such as galaxies is an accurate standard ruler. The covariance matrix of the …
discrete tracers such as galaxies is an accurate standard ruler. The covariance matrix of the …
A Lagrangian shape and topology optimization framework based on semi-discrete optimal transport
This article revolves around shape and topology optimization, in the applicative context
where the objective and constraint functionals depend on the solution to a physical …
where the objective and constraint functionals depend on the solution to a physical …
De-baryonifying halos via optimal transport
L Thiele - arXiv preprint arXiv:2411.18399, 2024 - arxiv.org
Baryonic feedback uncertainty is a limiting systematic for next-generation weak gravitational
lensing analyses. At the same time, high-resolution weak lensing maps are best analyzed at …
lensing analyses. At the same time, high-resolution weak lensing maps are best analyzed at …