Eur. Phys. J. C (2004) 38: 123-128
https://doi.org/10.1140/epjc/s2004-02024-y

theoretical physics

Origin of FRW cosmology in slow-roll inflationfrom non-compact Kaluza-Klein theory

¹ Instituto de Física y Matemáticas, (58040) Universidad Michoacana de San Nicolás de Hidalgo, AP: 2-82, Morelia, Michoacán, México
² Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
³ Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (7600), Mar del Plata, Argentina

^* e-mail: edgar@itzel.ifm.umich.mx

Abstract

Using a recently introduced formalism we discuss slow-roll inflation from Kaluza-Klein theory without the cylinder condition. In particular, some examples corresponding to polynomic and hyperbolic -potentials are studied. We find that the evolution of the fifth coordinate should be determinant for both the evolution of the early inflationary universe and the quantum fluctuations.