Reconstruction of ΛCDM model from f(T) gravity in viscous-fluid universe with observational constraints

Anirudh Pradhan, Archana Dixit, M. Zeyauddin

2023International Journal of Geometric Methods in Modern Physics19 citationsDOI

Abstract

In this paper, we reconstruct an [Formula: see text] function from [Formula: see text]CDM model and obtained field equations for this function [Formula: see text] in a flat FLRW viscous-fluid dusty universe, where [Formula: see text] is the torsion scalar, [Formula: see text] is an arbitrary constant and [Formula: see text] is the cosmological constant. We have solved the field equations and obtained an scale factor [Formula: see text] with [Formula: see text] as an integrating constant and [Formula: see text] is an arbitrary constant generated from viscous fluid, and this type of scale factor gives a time-dependent deceleration parameter. We have made observational constraints on Hubble parameter [Formula: see text] and apparent magnitude [Formula: see text] with observational datasets [Formula: see text] data and SNe Ia data by applying [Formula: see text]-test, to obtain the best-fit values of model parameters. Using these values of cosmological parameters, we have discussed our model results. We have obtained a transit phase accelerating quintessence dark energy model in viscous-fluid universe with effective equation of state ([Formula: see text]).

Topics & Concepts

PhysicsQuintessenceScale factor (cosmology)Friedmann–Lemaître–Robertson–Walker metricDark energyCosmological constantHubble's lawShape of the universeMathematical physicsEquation of stateScalar fieldUniverseMetric expansion of spaceCosmologyQuantum mechanicsCosmology and Gravitation TheoriesGalaxies: Formation, Evolution, PhenomenaSolar and Space Plasma Dynamics