Speaker: Dr Leonardo Giani
Affiliation: University of Queensland


One of the most striking successes of the standard cosmological model, the ΛCDM, is its ability to describe how the initially small perturbations of the isotropic early Universe evolved into the large scale structures we observe today. If the process of gravitational collapse from which these structures formed is described by the Bianchi IX geometry, these objects may inherit an intrinsic spin independently from their orbital angular momentum (just like particles in quantum mechanics). Under this assumption, we argue that a formal analogy exists between the cosmic web at late times and a cristal of fermions submerged in a thermal reservoir with temperature proportional to the rate of expansion of the Universe. We explore the phenomenological implications that would arise from this picture if the Cosmic Web at late times undergoes a phase transition towards (the gravitational equivalent of) a ferromagnetic state, described qualitatively using the Ising model in the mean field approximation.

About Physics Seminars

The weekly Physics Seminar series focuses on a broad range of physics research within SMP, along with frequent presentations from visiting researchers. Seminars are usually scheduled for 1.00pm on Tuesdays.

The talks are typically more specialised than a colloquium but are often attended by staff and PhD students across a broad range of areas. Speakers are thus encouraged to include introductory material in the talks.

All SMP researchers and HDR students are encouraged to speak. Please email Glen Harris to register your interest.

The seminars are open so there is no need to register your attendance.

Previous recorded physics seminars 


Physics Annexe (06)
407 (and via zoom https://uqz.zoom.us/j/94116861984)