Online Seminar “Cosmological observational constraints on the power law f(Q) type modified gravity theory”

Star-UBB Seminar Series:- Cosmological observational constraints on the power law f(Q) type modified gravity theory

In this talk, the speaker will discuss an alternative framework for advancing their understanding of dark energy beyond the confines of standard General Relativity(GR), within the realm of f(Q) modified gravity theory. The discussion commences with a succinct overview of the dark energy enigma, followed by an examination of the fundamental elements that provide opportunities for modifying or extending GR to address current challenges. To comprehensively grasp the accelerated expansion phenomenon of the universe, they will delve into a power-law type f(Q) cosmological model. After that, this model will confront observational datasets, contrasting it with the Λ-Cold Dark Matter(ΛCDM) model. Additionally, a detailed comparison between the predictions of the power-law model and the ΛCDM model through various cosmological applications will be presented. Later on, the speaker will conclude the findings by demonstrating how the f(Q) model remains capable of elucidating current observational results related to cosmological parameters, providing a compelling and coherent explanation for the accelerating expansion of the Universe, albeit with distinctions from the ΛCDM paradigm. The seminar will finish off by discussing some future perspectives.

時間:2024.03.21(四) 17:00~18:00
頻道:Zoom ID:853-7454-4159 ←
講者:Sanjay Mandal (Transilvania University, Brasov*, Romania)


*Universitatea Transilvania din Brașov

Scientific and Technological Advanced Research- Babeș-Bolyai University(Star-UBB) Seminar Series in Gravitation, Cosmology and Astrophysics

Presently a period of rapid and intense change are being witnessed in our understanding of the gravitational force, at a rate that is quickly increasing since the important observational discoveries of the late 1990s. With the advent of new observational techniques, the emergence of important cosmological and astrophysical paradigms can be seen that lead to a deep change in our understanding of the Universe. Astronomical observations strongly suggest that at large scales the force of gravity may not behave according to standard general relativity, and that a generalization of the gravitational action, either at the geometric level, or at the matter level, may be required for a full understanding of the gravitational interaction.

The goal of the present seminar is to bring Theoretical Gravitational Physics closer to the observations and experiments, and to discuss current topics in general relativity, high-energy physics, astrophysics and cosmology.


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