22 citations · 26 across the 9 of their papers we have counts for
10 papers
A Six-Parameter Teleparallel Cosmology Beyond CDM: Sign-Changing Torsional Dark Energy and Implications for
Mohamed Bedair, Mahmoud Hashim, Jackson Levi Said +1
We investigate a particular case of the extended exponential infrared f(T) teleparallel gravity, in which the geometric sector naturally produces an effective dark-energy density t…
Cosmological Viability of Exponential Infrared Gravity
Mahmoud Hashim, Eleonora Di Valentino, Jackson Levi Said +1
We investigate the cosmological viability of exponential infrared teleparallel gravity using current cosmological observations. This framework realizes late-time cosmic acce…
-CDM: A Minimal Deformation of CDM with Scalar Field Reconstruction
Phichayoot Baisri, Nandan Roy, Prasanta Sahoo +2
Recent DESI BAO observations provide intriguing hints that dark energy may be dynamical in nature. To investigate deviations of the dark energy equation of state (EoS) from $w = -1…
Machine Learning for Multi-messenger Probes of New Physics and Cosmology: A Review and Perspective
Andrea Addazi, Konstantin Belotsky, Vitaly Beylin +18
The multi-messenger exploration of dark matter and physics beyond the Standard Model has emerged as a central direction in modern astro-particle physics, particularly following the…
Do equation of state parametrizations of dark energy faithfully capture the dynamics of the late universe?
Özgür Akarsu, Maria Caruana, Konstantinos F. Dialektopoulos +3
We investigate how strongly late-time inferences about DE dynamics depend on the functional prior used to represent the expansion history. Using identical late-time combinations of…
Constraining Quintessence Models with ISW-tSZ Cross-Correlations: A Comparative Analysis of Thawing, Tracker, and Scaling-Freezing Dynamics
Ayodeji Ibitoye, Shiriny Akthar, Md. Wali Hossain +5
We present constraints on quintessence dark energy models using the observational detection of the Integrated Sachs-Wolfe (ISW)--thermal Sunyaev-Zeldovich (tSZ) cross-correlation d…
Hints of sign-changing scalar field energy density and a transient acceleration phase at from model-agnostic reconstructions
Özgür Akarsu, Maria Caruana, Konstantinos F. Dialektopoulos +3
We present a data-driven reconstruction of the late-time expansion history and its implications for dark-energy dynamics. Modeling the reduced Hubble rate with a node-based Gaussia…
Propagating Gravitational Waves in Teleparallel Gauss-Bonnet Gravity
Shivam Kumar Mishra, Jackson Levi Said, B. Mishra
Gravitational waves offer a key insight into the viability of classes of gravitational theories beyond general relativity. The observational constraints on their speed of propagati…
Quintessence model in the late Universe
L. K. Duchaniya, Jackson Levi Said, B. Mishra +1
Scalar fields have shown great potential in inducing tailored modifications compared to cosmic evolution in the CDM model. We investigate a quintessence model with five physical…
Well-Tempered Minkowski Solutions in Teleparallel Horndeski Theory
Reginald Christian Bernardo, Jackson Levi Said, Maria Caruana +1
Well-tempering stands among the few classical methods of screening vacuum energy to deliver a late-time, low energy vacuum state. We build on the class of Horndeski models that adm…