Bulk Viscous Flat FLRW Model with Observational Constraints in f(T, B) Gravity

This paper investigates the impact of bulk viscosity within framework f(T,B) gravity. We consider a time-dependent model with particular Hubble parameter expression. Here, we looked into viability well-motivated gravity model, which takes form f=αlog(B)+βT, and has free parameters α β. The 46 observational data (OHD) in range 0≤z≤2.36 were used to constrain achieve solution. have Markov Chain Monte Carlo (MCMC) method estimate observe that appears be good agreement observations. In addition, evaluate effective viscous equation state for model. examined characteristics different energy conditions stability analysis. is valid based on positive behavior null (NEC), weak (WEC), dominant (DEC); however, strong (SEC) are violation, suggesting universe expanding faster. Our was found quintom region. also discussed how tachyon scalar field corresponds