Observational constraints and some toy models in $f(Q)$ gravity with bulk viscous fluid

Understand

The standard formulation of general relativity fails to describe some recent interests in the universe.

• It impels us to go beyond the standard formulation of gravity.
• The $f(Q)$ gravity theory is an interesting modified theory of gravity, where the gravitational interaction is driven by the nonmetricity $Q$.
• This study aims to examine the cosmological models with the presence of bulk viscosity effect in the cosmological fluid within the framework of $f(Q)$ gravity.