We investigate the backreaction of the quantum fluctuations of a very light ($m \!\lesssim\! H_{\text{today}}$) nonminimally coupled spectator scalar field on the expansion dynamics of the Universe. The one-loop expectation value of the energy momentum tensor of these fluctuations, as a measure of the backreaction, is computed throughout the expansion history from the early inflationary universe until the onset of recent acceleration today. We show that, when the nonminimal coupling $\xi$ to Ricci curvature is negative ($\xi_c \!=\! 1/6$ corresponding to conformal coupling), the quantum backreaction grows exponentially during inflation, such that it can grow large enough rather quickly (within a few hundred e-foldings) to survive until late...
We show that current cosmic acceleration can be explained by an almost massless scalar field experie...
In a class of spatially homogeneous cosmologies including those of Bianchi type I--VIII mathematical...
We consider the effect of inhomogeneities on the expansion of the Einstein–de Sitter universe. We fi...
We investigate the backreaction of the quantum fluctuations of a very light ($m \!\lesssim\! H_{\tex...
We investigate whether quantum fluctuations can have a significant impact on the evolution of the un...
We consider the late-time one-loop quantum backreaction from inflationary fluctuations of a non-mini...
Quantum fluctuations of a nonminimally coupled scalar field in D-dimensional homogeneous and isotrop...
© 2018, The Author(s). We study the quantum backreaction from inflationary fluctuations of a very li...
In this paper we study a massless, minimally coupled scalar field in a Friedmann-Lemaître-Robertson-...
We consider inflation in a universe with a positive cosmological constant and a nonminimally coupled...
Abstract Scalar-tensor theory of gravity with non-minimal coupling is a fairly good candidate for da...
Abstract We study inflationary dynamics using a recently introduced classical-quantum correspondence...
A semiclassical cosmological model is considered which consists of a closed Friedmann-Robertson-Wal...
Li N. Cosmological backreaction : from the local Hubble expansion rate to dark energy. Bielefeld (Ge...
We show that a very light scalar field experiencing quantum fluctuations during primordial inflation...
We show that current cosmic acceleration can be explained by an almost massless scalar field experie...
In a class of spatially homogeneous cosmologies including those of Bianchi type I--VIII mathematical...
We consider the effect of inhomogeneities on the expansion of the Einstein–de Sitter universe. We fi...
We investigate the backreaction of the quantum fluctuations of a very light ($m \!\lesssim\! H_{\tex...
We investigate whether quantum fluctuations can have a significant impact on the evolution of the un...
We consider the late-time one-loop quantum backreaction from inflationary fluctuations of a non-mini...
Quantum fluctuations of a nonminimally coupled scalar field in D-dimensional homogeneous and isotrop...
© 2018, The Author(s). We study the quantum backreaction from inflationary fluctuations of a very li...
In this paper we study a massless, minimally coupled scalar field in a Friedmann-Lemaître-Robertson-...
We consider inflation in a universe with a positive cosmological constant and a nonminimally coupled...
Abstract Scalar-tensor theory of gravity with non-minimal coupling is a fairly good candidate for da...
Abstract We study inflationary dynamics using a recently introduced classical-quantum correspondence...
A semiclassical cosmological model is considered which consists of a closed Friedmann-Robertson-Wal...
Li N. Cosmological backreaction : from the local Hubble expansion rate to dark energy. Bielefeld (Ge...
We show that a very light scalar field experiencing quantum fluctuations during primordial inflation...
We show that current cosmic acceleration can be explained by an almost massless scalar field experie...
In a class of spatially homogeneous cosmologies including those of Bianchi type I--VIII mathematical...
We consider the effect of inhomogeneities on the expansion of the Einstein–de Sitter universe. We fi...