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Revisiting solving procedure for Ermakov-Pinney equation (with applications in the field of cosmology)

It is known that Ermakov-Pinney equation is a nonlinear equation with wide applications in dynamics, physics, cosmology (e.g., Ermakov equation can be connected to Bose-Einstein Condensate cosmology which unifies the dark energy and the dark matter). In this analytical study, we have presented a new type of solving procedure to obtain analytical solution of Ermakov-Pinney equation, specifically for the case of rotating early Universe with vortex. The particular case of solution of the aforementioned equation is presented also (such the solution of special kind is important for cosmological applications) which corresponds to the class of solutions with symmetry reduction.

preprint2022arXivOpen access
Sergey ErshkovVictor ChristiantoElbaz I. Abouelmagd
physics.gen-ph
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Sergey ErshkovVictor ChristiantoElbaz I. Abouelmagd

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