Teleparallel gravity: from theory to cosmology

S Bahamonde, KF Dialektopoulos… - Reports on Progress …, 2023 - iopscience.iop.org
Teleparallel gravity (TG) has significantly increased in popularity in recent decades, bringing
attention to Einstein's other theory of gravity. In this Review, we give a comprehensive …

A critical review of classical bouncing cosmologies

D Battefeld, P Peter - Physics Reports, 2015 - Elsevier
Given the proliferation of bouncing models in recent years, we gather and critically assess
these proposals in a comprehensive review. The PLANCK data shows an unmistakably red …

Bouncing cosmologies: progress and problems

R Brandenberger, P Peter - Foundations of Physics, 2017 - Springer
We review the status of bouncing cosmologies as alternatives to cosmological inflation for
providing a description of the very early universe, and a source for the cosmological …

Highly non-Gaussian tails and primordial black holes from single-field inflation

YF Cai, XH Ma, M Sasaki, DG Wang… - Journal of Cosmology …, 2022 - iopscience.iop.org
For primordial perturbations, deviations from Gaussian statistics on the tail of the probability
distribution can be associated with non-perturbative effects of inflation. In this paper, we …

Quintom cosmology: theoretical implications and observations

YF Cai, EN Saridakis, MR Setare, JQ Xia - Physics Reports, 2010 - Elsevier
We review the paradigm of quintom cosmology. This scenario is motivated by the
observational indications that the equation-of-state of dark energy across the cosmological …

Matter bounce cosmology with the f (T) gravity

YF Cai, SH Chen, JB Dent, S Dutta… - … and Quantum Gravity, 2011 - iopscience.iop.org
We show that the f (T) gravitational paradigm, in which gravity is described by an arbitrary
function of the torsion scalar, can provide a mechanism for realizing bouncing cosmologies …

Cosmological bouncing solutions in f(TB) gravity

M Caruana, G Farrugia, J Levi Said - The European Physical Journal C, 2020 - Springer
Teleparallel Gravity offers the possibility of reformulating gravity in terms of torsion by
exchanging the Levi-Civita connection with the Weitzenböck connection which describes …

Revisiting non-Gaussianity from non-attractor inflation models

YF Cai, X Chen, MH Namjoo, M Sasaki… - … of Cosmology and …, 2018 - iopscience.iop.org
Non-attractor inflation is known as the only single field inflationary scenario that can violate
non-Gaussianity consistency relation with the Bunch-Davies vacuum state and generate …

Exploring bouncing cosmologies with cosmological surveys

YF Cai - Science China Physics, Mechanics & Astronomy, 2014 - Springer
From recent observational data two significant directions have been made in the field of
theoretical cosmology recently. First, we are now able to make use of present observations …

An infinite set of Ward identities for adiabatic modes in cosmology

K Hinterbichler, L Hui, J Khoury - Journal of Cosmology and …, 2014 - iopscience.iop.org
We show that the correlation functions of any single-field cosmological model with constant
growing-modes are constrained by an infinite number of novel consistency relations, which …