Applications of Quantum Information in Astrophysics and Cosmology

Session

Research Talk 11: QIT/ML/Neutrinos/Astrophysics/Cosmology

26 Apr 2023, 16:00

31. New exact vacuum solutions and wormholes in $R^2$ gravity

Dr Hoang Nguyen (Babes-Bolyai University)

26/04/2023, 16:00

Cosmology

Research Talk

In this talk, I shall present a novel class of non-Schwarzschild asymptotically flat metrics in exact closed analytical form for pure $R^2$ gravity (Phys. Rev. D 106 (2022) 10, 104004). They were recently derived from a program originated by Buchdahl in 1962. I shall also discuss the existence of Morris-Thorne-Buchdahl wormholes using the metrics.

18. COMPARISON BETWEEN CHAPLYGIN GAS AND BULK VISCOUS COSMOLOGICAL MODELS

Mfanafuthi Msweli (University of Zululand)

26/04/2023, 16:15

Cosmology

Research Talk

Most of the matter in the universe is thought to be a form of dark energy, which makes up about 70% of all matter in the universe, 25% of dark matter, and 5% of ordinary matter such as planets and stars. Since it was discovered around 1998, researchers have been trying to determine the nature of this dark energy. Despite many efforts, there is still no good explanation for this. Two possible...

19. Modified Telleparallel Gravity

Shambel Sahlu (Entoto Observatory and Reserach Center, Ethiopian Space Science and Technology Institute)

26/04/2023, 16:30

Cosmology

Research Talk

In this presentation is mainly devoted to the extended theory of Einstein’s gravity, particularly focused on the modified teleparallel gravity theory to explore different cosmological interests beyond the standard model of cosmology. The accelerating expansion of the universe, the linear cosmological perturbations and the inflationary Universe in modified teleparallel gravity theory will be...

17. Quantum Chaos and Phase Transitions

Nitin Gupta (University of Cape Town)

26/04/2023, 16:45

Quantum Information

Research Talk

Quantum Complexity has emerged in the past few years as a candidate for quantum chaos diagnostic. This talk is based on a work that appeared last year, in which we show that a notion of quantum complexity (spread complexity) is sensitive to Topological Phase Transitions - at least for the prototypical Kitaev chain. I'll give a brief overview of what we mean when we say "quantum" chaos and...