Dr Hooshyar Assadullahi
Biography
My overall area of interest is early universe cosmology, in particular aspects of non-linear cosmological perturbations related to observational cosmology.
Non-Gaussianity (deviations from an exact Gaussian distribution of the primordial density perturbation), gravitational waves (tensor perturbation) and primordial Black holes are three aspects of cosmological perturbation, which bridge between theoretical cosmology and observation.
Their possible detection would help us to identify physical processes at work in the early Universe models. Establishing the early universe model, will able us to give greater clarity to the late universe problems like dark energy.
Research interests
My overall area of interest is early universe cosmology, in particular aspects of non-linear cosmological perturbations related to observational cosmology.
Non-Gaussianity (deviations from an exact Gaussian distribution of the
primordial density perturbation), gravitational waves (tensor perturbation) and primordial Black holes are three aspects of cosmological perturbation, which bridge between theoretical cosmology and observation.
Their possible detection would help us to identify physical
processes at work in the early Universe models. Establishing the early universe model, will able us to give greater clarity to the late universe problems like dark energy.
I am also intereste on models of early universe inflation such as Stocastic Inflation. In this model we try to have a beter understading of quantum mechanics effect, in early unioverse cosmology.
Teaching responsibilities
- Space Science and Applications of Physics
- Waves and Optics
- Solid State Physics and Detectors
- Coordination of year three Projects
Research outputs
2024
The separate-universe approach and sudden transitions during inflation
Assadullahi, H., Gow, A. D., Jackson, J. H. P., Koyama, K., Vennin, V., Wands, D.
9 May 2024, In: Journal of Cosmology and Astroparticle Physics. 2024, 5, 35p., 053
2023
Non-perturbative non-Gaussianity and primordial black holes
Assadullahi, H., Gow, A. D., Jackson, J. H. P., Koyama, K., Vennin, V., Wands, D.
30 May 2023, In: Europhysics Letters. 142, 4, 7p., 49001
Observational constraints on interacting vacuum energy with linear interactions
Assadullahi, H., Kaeonikhom, C., Schewtschenko, J., Wands, D.
26 Jan 2023, In: Journal of Cosmology and Astroparticle Physics. 2023, 01, 34p., 042