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Home > Advances in High Energy Physics (Hindawi) > Models of Collapsing and Expanding Cylindrical Source in <math id="M1" xmlns="http://www.w3.org/1998/Math/MathML"><mi>f</mi><mo stretchy="false">(</mo><mi>R</mi><mo>,</mo><mi>T</mi><mo stretchy="false">)</mo></math> Theory |

Sharif, M. (Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, Pakistan) ; Siddiqa, Aisha (Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, Pakistan)

14 February 2019

**Abstract: **We discuss the collapsing and expanding solutions of anisotropic charged cylinder in the context of $f(R,T)$ theory ( $R$ represents the Ricci scalar and $T$ denotes the trace of energy-momentum tensor). For this purpose, we take an auxiliary solution of Einstein-Maxwell field equations and evaluate expansion scalar whose negative values lead to collapse and positive values give expansion. For both cases, the behavior of density, pressure, anisotropic parameter, and mass is explored and the effects of charge as well as model parameter on these quantities are examined. The energy conditions are found to be satisfied for both solutions.

**Published in: ****Advances in High Energy Physics 2019 (2019) 8702795**
**Published by: **Hindawi

**DOI: **10.1155/2019/8702795

**License: **CC-BY-3.0