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arXiv · gr-qc/0604126

Complex Lagrangians and phantom cosmology

A. A. Andrianov·F. Cannata·A. Y. Kamenshchik
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Abstract

Motivated by the generalization of quantum theory for the case of non-Hermitian Hamiltonians with PT symmetry, we show how a classical cosmological model describes a smooth transition from ordinary dark energy to the phantom one. The model is based on a classical complex Lagrangian of a scalar field. Specific symmetry properties analogous to PT in non-Hermitian quantum mechanics lead to purely real equation of motion.

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A. A. Andrianov, F. Cannata, A. Y. Kamenshchik. 2006-05-01. Complex Lagrangians and phantom cosmology. https://doi.org/10.1088/0305-4470%2F39%2F32%2Fs02

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