Thin-shell gravastar model in f(Q, T) gravity*

In the last few decades, gravastars have been proposed as an alternative to black holes. The stability of gravastar has studied in many modified theories gravity along with Einstein's GR. $f(Q,T)$ gravity, a successfully theory for describing current accelerated expansion Universe, used this article study different aspects. According Mazur and Mottola (Proc. Natl. Acad. Sci 101, 9545 (2004)), it three regions equations state. Here work, we interior by considering $p=-\rho$ EoS describe dark sector region. next region is thin shell ultrarelativistic stiff fluid, which investigated several physical properties, viz., proper length, energy, entropy, surface energy density, etc. addition, redshift speed sound check potential our thin-shell model. Apart from that, entropy maximization technique verify gravastar's outer complete vacuum described exterior Schwarzschild geometry. Finally, presented stable model singularity-free devoid any incompleteness classical hole theory.