| Friday 19 April 2024 | |
| Events for day: Wednesday 29 July 2020 |
| 11:00 - 12:00 Online Computational Nanoscience journal club Fermionic neural-network states for ab-initio electronic structure School NANO SCIENCES Fermionic neural-network states for ab-initio electronic structure Abstract: Neural-network quantum states have been successfully used to study a variety of lattice and continuous-space problems. Despite a great deal of general methodological developments, representing fermionic matter is however still early research activity. Here we present an extension of neural-network quantum states to model interacting fermionic problems. Borrowing techniques from quantum simulation, we directly map fermionic degrees of freedom to spin ones, and then use neural-network quantum states to perform electronic structure ca ... 11:00 - 12:00 Wednesday Weekly Seminar-skyroom A conformal extension of SUSY and its particle collider phenomenology School PARTICLES AND ACCELERATORS Abstract: In arXiv:1909.04061 we have followed up on the previous works on models where part of MSSM is embedded in a conformal field theory. The model building is done via AdS/CFT correspondence. SUSY, theoretically one of the most convincing extensions of SM, lacks sufficient evidence in LHC, at least at low energies where the extension would be most compelling. Assuming that SUSY comes with the extra conformal symmetry, we checked to see whether production of the conformal “stuff”, i.e. continuum, would relax the bounds on SUSY particles. This is in fact the case since current searches primary focus on large missing transverse energy and ... 13:30 - 15:00 Weekly Seminar (Online) Cosmic discordance: What is the value of the Hubble constant? https://www.skyroom.online/ch/soa/weekly-seminar School ASTRONOMY The current expansion rate of the Universe, a.k.a. the Hubble constant or H0 is a fundamental cosmological parameter and its measurement has been one of the main objectives of many research projects since the discovery of the cosmic expansion around a hundred years ago. Recently, the two main approaches for measuring the H0 are unexpectedly finding two significantly different values. The early-Universe approaches, which rely on measuring the sound horizon, report H0 ? 67 km/s.Mpc (with <1.5% err. and assuming the LCDM model), and the late-Universe or direct methods based on precise distance ladder calibrations find H0 ? 73 km/s.Mpc (with <3% ... 14:00 - 15:00 Weekly Seminar Condensed Matter and Statistical Physics Group Li-ion batteries: basics, properties and prospects of the novel anode nanomaterials School PHYSICS Abstract: Rechargeable Li-ion battery has been the focus of many research studies in recent decades and its successful commercialization paved the way for application in electronic devices and modern electric vehicles as well as the use in large-scale storage for the electrical power grid. The further development of this industry, however, demands new electrode materials to meet the required features and address the current drawbacks. In this presentation, basics of Li-ion batteries and important demanded properties will be illustrated with a focus on the anode. In addition, the prospects of some novel anode nanomaterials will ... 14:00 - 15:00 Weekly Webinar Li-ion batteries: basics, properties and prospects of the novel anode nanomaterials School NANO SCIENCES Li-ion batteries: basics, properties and prospects of the novel anode nanomaterials Abstract: Rechargeable Li-ion battery has been the focus of many research studies in recent decades and its successful commercialization paved the way for application in electronic devices and modern electric vehicles as well as the use in large-scale storage for the electrical power grid. The further development of this industry, however, demands new electrode materials to meet the required features and address the current drawbacks. In this presentation, basics of Li-ion batteries and important demanded properties will be ... 15:30 - 17:30 Mathtematical Logic Weekly Seminar Cardinalities of Definable Sets in Finite Structures School MATHEMATICS A theorem of Chatzidakis, van den Dries and Macintyre, stemming ultimately from the Lang-Weil estimates, asserts, roughly, that if $phi(x,y)$ is a formula in the language of rings (where $x,y$ are tuples) then the size of the solution set of $phi(x,a)$ in any finite field $F_q$ (where $a$ is a parameter tuple from $F_q$) takes one of finitely many dimension-measure pairs as $F_q$ and a vary: roughly, for a finite set $E$ of pairs $(mu,d)$ ($mu$ rational, $d$ integer) dependent on $phi$, any set $phi(F_q,a)$ has size roughly $mu.q^d$ for some $(mu,d) in E$. It follows, for example, that there is no single formula $phi(x,y)$ such that in e ... 16:00 - 17:30 Theoretical Neuroscience Journal Club ( Online ) Transmission of visual information across brain, via flexible coordination of oscillatory activities School COGNITIVE SCIENCES Organized by: School of Cognitive Sciences to receive the link to join online, please send email to theoretical.neurosci.ipm@gmail.com Abstract: Oscillatory neural activities are known as a hallmark of information processing and transmission in human brain. While neuroscience studies have mainly focused on the function of neural activities within a single frequency band at a time, it is not well understood what role the simultaneous existence of components from distinct frequency bands as well as their interaction may play in the context of high-level cognitive functions. Here we present an overview on ... |