|Tuesday 24 November 2020|
|Events for day: Wednesday 25 November 2020|
| 11:00 - 12:00 Wednesday Weekly Seminar-skyroom|
Hydrodynamization in the first-order causal and stable hydrodynamics- part2
PARTICLES AND ACCELERATORS
Abstract: In my first talk, I review some basic concepts such as the early thermalization puzzle, hydrodynamization paradigm, and stability/casualty problem. I also speculate on a possible way to understand hydrodynamization in conformal theories. In my second talk, I present our results on the hydrodynamization in the first-order causal and stable(FOCS) hydrodynamics, with an emphasis on the differences between the FOCS and more traditional approaches.
13:30 - 15:00 Weekly Seminar (Online)
Dynamical Tidal Locking Theory: A new source of the Spin of Dark Matter Halos
We revisit the question of what mechanism is responsible for the spins of halos of dark matter. The answer to this question is of high importance for modeling galaxy intrinsic alignment, which can potentially contaminate current and future lensing data. In particular, we show that when the dark matter halos pass nearly by each other in dense environments-- namely halo assemblies-- they swing and spin each other via exerting mutual tidal torques. We show that this has a significant contribution to the spin of dark matter halos comparable to that of calculated by the so-called tidal torque theory (TTT). We use the results of state-of-the-art si ...
14:00 - 15:00 Weekly Seminar
Condensed Matter and Statistical Physics Group
Magnetic properties of the monolayer CrI3 as an example in two-dimensional magnetic materials world.
Thanks to magnetocrystalline anisotropy in van der Waals magnetic materials, the Mermin-Wagner restriction is deviated and two-dimensional (2D) magnetic materials had been discovered recently. The combination of magnetic and unique properties of 2D materials has been rapidly attracted the attention of researchers to novel magnetic 2D materials. So, the control of spin-spin interactions in magnetic systems is an essential topic related to the fundamental physics of quantum magnetism as well as applied spintronics-based technology. In this talk, the magnetic properties of monolayer CrI3, as a representative of 2D magne ...
15:30 - 17:30 Mathtematical Logic Weekly Seminar
Friasse Limits of Categories of C*-algebras
Some important C*-algebras have been recently flagged and studied as Fraisse limits. In the first part of my talk, I will review the Fraisse theory of C*-algebras (or more generally, of metric structures)--in the context of category theory (as opposed to model theory)--and give examples of approximately finite-dimensional non-commutative C*-algebras which appear as Fraisse limits and exabit Cantor-space-like universality/homogeneity properties. In the second part of my talk, I will show how one can apply the fact that a C*-algebra A is the Fraisse limit of a category of C*-algebras, which is sufficiently closed under taking tensor products of ...
19:30 - 21:30 IPM-SUT Joint IRQM Webinars on Quark matter and Relativistic hydrodynamics
General relativistic viscous fluid
PARTICLES AND ACCELERATORS
Abstract: The discovery of the quark-gluon plasma that forms in heavy-ion collision experiments provides a unique opportunity to study the properties of matter under extreme conditions, as the quark-gluon plasma is the hottest, smallest, and densest fluid known to humanity. Studying the quark-gluon plasma also provides a window into the earliest moments of the universe, since microseconds after the Big Bang the universe was filled with matter in the form of the quark-gluon plasma. For more than two decades, the community has intensively studied the quark-gluon plasma with the help of a rich interaction between experiment, theory, phenomenolog ...