A good year ago, quantum corrections have been proposed to the very early Universe. It was concluded that these quantum corrections contain a precise estimation for the cosmological constant and the so-called radiation term. The authors even have interpreted the latter as evading the big-bang singularity and determining an infinite age of the Universe. This was mentioned in science and social media for instance http://phys.org/news/2015-02-big-quantum-equation-universe.html(adsbygoogle = window.adsbygoogle || []).push({});

This proposal was sharply criticized in http://arxiv.org/pdf/1505.03070.pdf

Instead of struggling with the correctness of the given approach and to retry to rederive the mathematical equations as partly done in http://arxiv.org/pdf/1505.03070.pdf, Tawfik et al. wanted to check the so-called "perturbative instability", which based is on whether or not any added perturbation alters at a later time. The universe we live in and the one described by such world approach is apparently stable despite its accelerated expansion. Thus the claimed world model should absolve the

"stability check", http://arxiv.org/pdf/1603.03032.pdf and Physical Review D

https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.063526 show that the "Cosmology with quantum equation" is simply unstable.

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# A Instability of Cosmology with Quantum Corrections

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