742 citations · 1.1k across the 16 of their papers we have counts for
17 papers
Gauge invariant perturbations of Cosmology
Shivam Kumar Mishra, Jackson Levi Said, B. Mishra
The Gauss-Bonnet invariant connects foundational aspects of geometry with physical phenomena in a variety of ways. Teleparallel gravity offers a novel direction in which to use the…
Cosmo-Learn: code for learning cosmology using different methods and mock data
Reginald Christian Bernardo, Daniela Grandón, Jackson Levi Said +3
We present cosmo_learn, an open-source python-based software package designed to simulate cosmological data and perform data-driven inference using a range of modern statistical an…
White Dwarf Envelops and Temperature Corrections in Exponential Gravity
Gabriel Farrugia, Carlos Gafa', Jackson Levi Said
Compact stars have long served as a test bed of gravitational models and their coupling with stellar matter. In this work, we explore the behavior of an exponential model in f(T) g…
Cosmic Growth in Teleparallel Gravity
Salvatore Capozziello, Maria Caruana, Gabriel Farrugia +2
Physical evolution of cosmological models can be tested by using expansion data, while growth history of these models is capable of testing dynamics of the inhomogeneous parts of e…
Cosmological Perturbations in the Teleparallel analog of Horndeski gravity
Bobomurat Ahmedov, Konstantinos F. Dialektopoulos, Jackson Levi Said +3
In this work we study the cosmological perturbations in Bahamonde-Dialektopoulos-Levi Said (BDLS) theory, i.e. the teleparallel analog of Horndeski gravity. In order to understand…
Ghost and Laplacian Instabilities in the Teleparallel Horndeski Gravity
Salvatore Capozziello, Maria Caruana, Jackson Levi Said +1
Teleparallel geometry offers a platform on which to build up theories of gravity where torsion rather than curvature mediates gravitational interaction. The teleparallel analogue o…
Confronting quantum-corrected teleparallel cosmology with observations
Reginald Christian Bernardo, Che-Yu Chen, Jackson Levi Said +1
It has been shown that at the semi-classical order, gravitational theories with quantum fluctuations can be effectively recast as modified theories of gravity with non-minimal grav…
Towards a model-independent reconstruction approach for late-time Hubble data
Reginald Christian Bernardo, Jackson Levi Said
Gaussian processes offers a convenient way to perform nonparametric reconstructions of observational data assuming only a kernel which describes the covariance between neighbouring…
Gravitational Wave Propagation and Polarizations in the Teleparallel analog of Horndeski Gravity
Sebastian Bahamonde, Maria Caruana, Konstantinos F. Dialektopoulos +5
Gravitational waves (GWs) have opened a new window on fundamental physics in a number of important ways. The next generation of GW detectors may reveal more information about the p…
Performance of Non-Parametric Reconstruction Techniques in the Late-Time Universe
Celia Escamilla-Rivera, Jackson Levi Said, Jurgen Mifsud
In the context of a Hubble tension problem that is growing in its statistical significance, we reconsider the effectiveness of non-parametric reconstruction techniques which are in…
A data-driven Reconstruction of Horndeski gravity via the Gaussian processes
Reginald Christian Bernardo, Jackson Levi Said
We reconstruct the Hubble function from cosmic chronometers, supernovae, and baryon acoustic oscillations compiled data sets via the Gaussian process (GP) method and use it to draw…
Reconstructing teleparallel gravity with cosmic structure growth and expansion rate data
Jackson Levi Said, Jurgen Mifsud, Joseph Sultana +1
In this work, we use a combined approach of Hubble parameter data together with redshift-space-distortion data, which together are used to reconstruct the teleparallel gra…
Cosmological perturbations in modified teleparallel gravity models: Boundary term extension
Sebastian Bahamonde, Viktor Gakis, Stella Kiorpelidi +3
Teleparallel gravity offers a new avenue in which to construct gravitational models beyond general relativity. While teleparallel gravity can be framed in a way to be dynamically e…
Cosmological bouncing solutions in f(T,B) gravity
Maria Caruana, Gabriel Farrugia, Jackson Levi Said
Teleparallel Gravity offers the possibility of reformulating gravity in terms of torsion by exchanging the Levi-Civita connection with the Weitzenböck connection which describes to…
Stability analysis for cosmological models in gravity
Geovanny A. Rave Franco, Celia Escamilla-Rivera, Jackson Levi Said
In this paper we study cosmological solutions of the gravity using dynamical system analyses. For this purpose we consider cosmological viable functions of that a…
Generalized Tachyonic Teleparallel cosmology
Sebastian Bahamonde, Mihai Marciu, Jackson Levi Said
In this paper we propose a new dark energy model in the teleparallel alternative of general relativity, by considering a generalized non--minimal coupling of a tachyonic scalar fie…
Black holes, gravitational waves and fundamental physics: a roadmap
Leor Barack, Vitor Cardoso, Samaya Nissanke +203
The grand challenges of contemporary fundamental physics---dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-…