In pressureless quantum polytropes, positive pressure anisotropy compresses the structure and stronger gravity weakens binding, opposite to classical polytrope behavior.
Double relativistic master polytrope for anisotropic matter
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abstract
We present a detailed analysis of a general relativistic static spherical symmetric distribution in which both the radial and tangential pressures follow a master polytropic equation of state that generalizes the standard treatment and avoids the appearance of singularities in the system. In particular, we find the corresponding Lane-Emden equation and integrate it for a wide range of values of the parameters involved. We explore the parameter space with the aim to find the set of parameters leading to reasonable physical solutions. Also, we considered the effect of spherically symmetric perturbations of the matter variables in order to analyze the possible apparition of cracking within the compact distribution.
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Anisotropic quantum polytropes
In pressureless quantum polytropes, positive pressure anisotropy compresses the structure and stronger gravity weakens binding, opposite to classical polytrope behavior.