Speaker
Alexander Andrianov
(Saint Petersburg State University)
Description
According to modern observational data the phantom equation of
state for dark energy is not excluded. This scenario creates problems
with stability of universe evolution. An alternative to phantom
models is given by models of scalar matter with non-Hermitian, PTsymmetric
interaction[1]. In this talk we present the set of such models
with several scalar fields which are exactly (analytically) solvable both
in classical and in quantum case[2]. The latter case is investigated in
the Friedmann-Robertson-Walker minisuperspace approach. We use
advantages of analytical solvability to disentangle the differences between
phantom and PT symmetric dynamics and give arguments in
favor to the latter one.
References
[1] A. A. Andrianov, F. Cannata, A. Y. Kamenshchik and D. Regoli, Phan-
tom cosmology based on PT symmetry, Int. J. Mod. Phys. D, 19 (2010),
97–111.
[2] A. A. Andrianov, O. O. Novikov, Chen Lan. Quantum cosmology of
the multi-eld scalar matter: some exact solutions, arXiv:1503.05527v1
(2015), 1-16.
Primary author
Alexander Andrianov
(Saint Petersburg State University)
