3 papers
hep-lat2025
Sparse modeling study of extracting charmonium spectral functions from lattice QCD at finite temperature
Junichi Takahashi, Hiroshi Ohno, Akio Tomiya
We present charmonium spectral functions extracted from Euclidean-time correlation functions using sparse modeling (SpM). SpM solves inverse problems by considering only the sparsi…
hep-lat2024
Sparse modeling study to extract spectral functions from lattice QCD data
Junichi Takahashi, Hiroshi Ohno, Akio Tomiya
We present spectral functions extracted from Euclidean-time correlation functions by using sparse modeling. Sparse modeling is a method that solves inverse problems by considering…
hep-lat2023
Sparse modeling approach to extract spectral functions with covariance of Euclidean-time correlators of lattice QCD
Junichi Takahashi, Hiroshi Ohno, Akio Tomiya
We present our sparse modeling study to extract spectral functions from Euclidean-time correlation functions. In this study covariance between different Euclidean times of the corr…