期刊
CLASSICAL AND QUANTUM GRAVITY
卷 38, 期 13, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6382/abfed7
关键词
classical and quantum cosmology; exact solutions; chiral cosmology
类别
资金
- SNI-CONACYT
- Red PROMEP: Gravitation and Mathematical Physics under project Quantum aspects of gravity in cosmological models, phenomenology
- PRODEP [UDG-CA-376]
This work investigates a flat Friedmann-Robertson-Walker Universe with two scalar fields, studying the effects of two potentials and a mixed momenta term on the solutions, leading to classical and quantum solutions for a quintom like case and a quintessence like case.
In this work, first, we study a flat Friedmann-Robertson-Walker Universe with two scalar fields but only one potential term, which can be thought as a simple quintessence plus a K-essence model. Employing the Hamiltonian formalism we are able to obtain the classical and quantum solutions. The second model studied, is also a flat Friedmann-Robertson-Walker Universe with two scalar fields, with the difference that the two potentials are considered as well as the standard kinetic energy and the mixed term (chiral field approach). Regarding this second model, it is shown that setting to zero the coefficient accompanying the mixed momenta term, two possible cases can be studied: a quintom like case (m(+)(12)) and a quintessence like case (m(-)(12)). For both scenarios classical and quantum solutions are presented.
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