Complex Lagrangians and phantom cosmology

被引：31

作者：

Andrianov, A. A. ^{[1
]}

Cannata, F.

Kamenshchik, A. Y.

机构：

[1] St Petersburg State Univ, VA Fock Dept Theoret Phys, St Petersburg 198904, Russia

[2] Dipartimento Fis, I-40126 Bologna, Italy

[3] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

[4] Russian Acad Sci, LD Landau Theoret Phys Inst, Moscow 119334, Russia

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2006年 / 39卷 / 32期

关键词：

D O I：

10.1088/0305-4470/39/32/S02

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 equations of motion.

引用

页码：9975 / 9982

页数：8

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