Beta-function formalism for k-essence constant-roll inflation
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DOI: 10.1016/j.dark.2020.100505
Abstract: The beta function formalism is being used to study the constant-roll inflation in the k-essence model. Assuming the second slow-roll parameter as a constant leads to a first-order differential equation for $\beta$-function which is much… read more here.
Keywords: roll; constant roll; beta function; roll inflation ... See more keywords
Systematics of constant roll inflation
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DOI: 10.1088/1475-7516/2018/02/004
Abstract: We study constant roll inflation systematically. This is a regime, in which the slow roll approximation can be violated. It has long been thought that this approximation is necessary for agreement with observations. However, recently… read more here.
Keywords: roll; systematics constant; constant roll; systematics ... See more keywords
Constant-roll inflation in f(T) teleparallel gravity
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DOI: 10.1088/1475-7516/2018/07/026
Abstract: We investigate in detail the implications of the constant-roll condition on the inflationary era of a scalar field coupled to a teleparallel $f(T)$ gravity. The resulting cosmological equations constitute a reconstruction technique which enables us… read more here.
Keywords: inflation teleparallel; constant roll; teleparallel gravity; gravity ... See more keywords
Tachyon constant-roll inflation
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DOI: 10.1103/physrevd.97.083006
Abstract: The constant-roll inflation is studied where the inflaton is taken as a tachyon field. Based on this approach, the second slow-roll parameter is taken as a constant which leads to a differential equation for the… read more here.
Keywords: hubble parameter; roll; constant roll; parameter ... See more keywords
Primordial Spectra of slow-roll inflation at second-order with the Gauss-Bonnet correction
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DOI: 10.1103/physrevd.97.103502
Abstract: The slow-roll inflation for a single scalar field that couples to the Gauss-Bonnet (GB) term represents an important higher-order curvature correction inspired by string theory. With the arrival of the era of precision cosmology, it… read more here.
Keywords: gauss bonnet; order; slow roll; roll inflation ... See more keywords