Abstract
In this paper, we analyze a few physical characteristics of gravastar with cylindrical geometry in [Formula: see text] theory, where [Formula: see text] is the Ricci scalar and [Formula: see text] is the trace of energy-momentum tensor. The gravastar is generally considered to be a substitute of a black hole with three different regions. In this work, we examine the formulation of gravastar-like cylindrical structures in [Formula: see text] theory. By using Darmois and Israel matching conditions, we formulate a mass function of a thin shell. We calculate the different physical characteristics of gravastar, in particular, entropy within the thin shell, proper length of the intermediate thin shell as well as energy of the shell.
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