A. Yukselci

most citedNonlinear Matter Power Spectrum from relativistic

N

-body Simulations:

I^_{s}

CDM versus

I^

CDM

2 citations · 2 across the 2 of their papers we have counts for

collaborators

3 papers

gr-qc2026

A Friendly Phantom: Late-time AdS-to-dS transition and cosmological tensions

ÃzgÃ¼r Akarsu, Leandros Perivolaropoulos, A. Emrah YÃ¼kselci +1

We present Ph- $I^_{s}$ CDM, a phantom-scalar realization within General Relativity of the sign-switching cosmological-constant idea, $I^_{s}$ CDM, in which a phantom scalar e…

astro-ph.CO2026★ 2 cited

Nonlinear Matter Power Spectrum from relativistic $N$ -body Simulations: $I^_{s}$ CDM versus $I^$ CDM

ÃzgÃ¼r Akarsu, Eleonora Di Valentino, JiÅÃ VyskoÄil +3

We present relativistic $N$ -body simulations of a $I^_{s}$ CDM - sign-switching cosmological constant (CC) - scenario under general relativity and compare its nonlinear matter p…

astro-ph.CO2025

Dynamical dark energy with AdS-to-dS and dS-to-dS transitions: Implications for the $H_{0}$ tension

ÃzgÃ¼r Akarsu, Leandros Perivolaropoulos, Anna Tsikoundoura +2

We investigate the dynamics and cosmological implications of dark energy (DE), modeled as a scalar field with a hyperbolic tangent potential that induces a smooth shift in the effe…

A Friendly Phantom: Late-time AdS-to-dS transition and cosmological tensions

Nonlinear Matter Power Spectrum from relativistic N-body Simulations: I^s​CDM versus I^CDM

Dynamical dark energy with AdS-to-dS and dS-to-dS transitions: Implications for the H0​ tension

Nonlinear Matter Power Spectrum from relativistic $N$ -body Simulations: $I^_{s}$ CDM versus $I^$ CDM

Dynamical dark energy with AdS-to-dS and dS-to-dS transitions: Implications for the $H_{0}$ tension