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arXiv · 2606.22675

Bianchi IX dynamics with a phantom field

Adel Awad·Dmitry Chirkov·Alexey Golovnev·Alexey Toporensky
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Abstract

We consider Bianchi IX dynamics of a Universe filled with a massless phantom field. Such an exotic matter source enables regimes impossible in vacuum or with a standard scalar field. In particular, two Kasner indices of BKL oscillations can be simultaneously negative, and the absolute value of a negative index can be large. We describe the consequences of these features and explain the nature of volume oscillations recently discovered in such a system by numerical methods.

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Adel Awad, Dmitry Chirkov, Alexey Golovnev, Alexey Toporensky. 2026-06-21. Bianchi IX dynamics with a phantom field. https://arxiv.org/abs/2606.22675

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