Next Article in Journal
A Generalized Solution of Bianchi Type-V Models with Time-Dependent G and Λ
Next Article in Special Issue
Gravitational Waves in Einstein-Æther Theory and Generalized TeVeS Theory after GW170817
Previous Article in Journal
Cosmological Constant from Condensation of Defect Excitations
Previous Article in Special Issue
A Scale at 10 MeV, Gravitational Topological Vacuum, and Large Extra Dimensions
Conference Report

Non-Locality and Late-Time Cosmic Acceleration from an Ultraviolet Complete Theory

by 1,* and 2,3
1
Department of Space Science, Beihang University, Beijing 100191, China
2
CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
3
School of Physical Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Universe 2018, 4(8), 82; https://doi.org/10.3390/universe4080082
Received: 26 June 2018 / Revised: 24 July 2018 / Accepted: 24 July 2018 / Published: 26 July 2018
(This article belongs to the Special Issue Gravity, Black Holes and Cosmology XXI)
A local phenomenological model that reduces to a non-local gravitational theory giving dark energy is proposed. The non-local gravity action is known to fit the data as well as Λ-CDM thereby demanding a more fundamental local treatment. It is seen that the scale-invariant higher-derivative scalar-tensor theory of gravity, which is known to be ultraviolet perturbative renormalizable to all loops and where ghosts become innocuous, generates non-locality at low energies. The local action comprises of two real scalar fields coupled non-minimally with the higher-derivative gravity action. When one of the scalar acquiring the Vacuum Expectation Value (VEV) induces Einstein–Hilbert gravity, generates mass for fields, and gets decoupled from system, it leaves behind a residual theory which in turn leads to a non-local gravity generating dark energy effects. View Full-Text
Keywords: perturbative quantum field theory; cosmology; cosmological constant and dark energy; non-locality perturbative quantum field theory; cosmology; cosmological constant and dark energy; non-locality
MDPI and ACS Style

Narain, G.; Li, T. Non-Locality and Late-Time Cosmic Acceleration from an Ultraviolet Complete Theory . Universe 2018, 4, 82. https://doi.org/10.3390/universe4080082

AMA Style

Narain G, Li T. Non-Locality and Late-Time Cosmic Acceleration from an Ultraviolet Complete Theory . Universe. 2018; 4(8):82. https://doi.org/10.3390/universe4080082

Chicago/Turabian Style

Narain, Gaurav, and Tianjun Li. 2018. "Non-Locality and Late-Time Cosmic Acceleration from an Ultraviolet Complete Theory " Universe 4, no. 8: 82. https://doi.org/10.3390/universe4080082

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop