Time-dependent Lagrangian Perturbation Theory with The Dynamical Dark Energy

6th IF-YITP GR+HEP+Cosmo International Symposium

Chantavat, Teeraparb^1

ThEP's Laboratory of Cosmology and Gravity, Institute for Fundamental Study, Tah Poe Academia Institute, Naresuan University, Phitsanulok

65000, Thailand^1

关键词: Dark energy;    Galaxy clustering;    General-cosmology;    Growth functions;    Perturbation theory;    Quasi-linear;    Time dependent;    Time independents;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/883/1/012003/pdf
DOI  :  10.1088/1742-6596/883/1/012003

来源: IOP

【 摘 要 】

This article gives a brief overview of the time-dependent Lagrangian perturbation theory as a theoretical tool to predict the behavior of galaxy clustering in quasi-linear regimes. While most of the Lagrangian perturbation theories are based on an Einstein-De Sitter space where the growth function is time independent, more accurate theoretical predictions could be achieved by time-dependent growth functions in a more general cosmology. This is directly applicable to the dynamical dark-energy where the clustering behavior can be recognized with time-dependent growth functions.