Anisotropic stars made of exotic matter within the complexity factor formalism

Abstract

We investigate exotic stars composed of dark energy within the context of Einstein's General Relativity, by applying an extended Chaplygin gas equation-of-state. To account for anisotropies, we utilize a formalism based on the complexity factor to obtain numerical solutions. By applying well-established criteria, we demonstrate that the solutions are physically valid and well-behaved. In addition, a comparison with a more conventional approach is also conducted.

Minor corrections

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• Stellar modeling via the Tolman IV solution: The cases of the massive pulsar J0740+6620 and the HESS J1731-347 compact object
• On Modeling Anisotropic Quark Stars: The Role of Anisotropy in Radial Oscillation Spectra
• Intrinsic pressure anisotropy in spherical Proca stars
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