Reconstructing Dark Energy: Can we be fooled by Phantom Crossing?

by Prof. Arman Shafieloo (KASI - Korea Astronomy and Space Science Institute, Daejeon)

Thursday 22 Jan 2026, 14:00 → 15:00 Europe/Prague

Abstract: 

Reconstructing the expansion history of the universe and the properties of dark energy has been a central goal in physical cosmology, with far-reaching implications for our understanding of fundamental physics. By examining the behavior and influence of dark energy through cosmological observations, we can gain insight into the forces driving the universe’s accelerated expansion. In this presentation, I will examine methods for reconstructing dark energy properties,  assess findings from the latest observational data such as DESI DR2, and discuss potential advancements in the field that may enhance our understanding of the universe’s fundamental dynamics. I will also discuss the possibility of Phantom Crossing in the equation of state of dark energy considering recent cosmological observations.

 

 

The seminar will be held in the Dvořák hall, FZU, Pod Vodárenskou věží 1, Prague.

Location: https://goo.gl/maps/wEf7PsiLimSXMZhE9

 

The seminar will be also available via ZOOM video conference system:

Meeting ID: 674 9629 6646
Passcode: 575511

or join meeting via direct ZOOM link

 

2026_01_22_Shafieloo_invitation.pdf