Phantom universe from CPT symmetric QFT

TL;DR

This paper develops a classical cosmological scalar field model based on CPT-symmetric non-Hermitian quantum theory, enabling a smooth transition from dark energy to phantom energy.

Contribution

It introduces a novel scalar field model derived from CPT-symmetric non-Hermitian quantum theory for cosmological applications.

Findings

Successfully models a smooth transition from dark energy to phantom energy.

Provides a new theoretical framework linking CPT symmetry with cosmological scalar fields.

Demonstrates potential for CPT-symmetric quantum theories to inform cosmological models.

Abstract

Inspired by the generalization of quantum theory for the case of non-Hermitian Hamiltonians with CPT symmetry, we construct a simple classical cosmological scalar field based model describing a smooth transition from ordinary dark energy to the phantom one.