Vilnius University Faculty of Physics ITPA, in collaboration with The Center for Physical Sciences and Technology (FTMC) invites you to the upcoming seminar.
Abstract:
This seminar is aimed at presenting two fascinating topics of modern condensed matter physics: topological systems and time-crystalline structures. Since the experimental discovery of the quantum Hall effect and its theoretical explanation in terms of a special feature — a nonzero topological invariant, the Chern number, — of the energy bands, topology has become a crucial part of the band theory of solids and classification of different states of matter. Furthermore, topological considerations have brought into scope the study of highdimensional physical systems: for example, a so-called topological pump in one dimension can be associated with a two-dimensional quantum Hall effect, and a two-dimensional pump allows one to study the quantum Hall effect in four dimensions. Probing high-dimensional systems has also been made possible by a recent proposal of time-crystalline structures — periodically driven quantum systems in which time is endowed with properties of an extra coordinate axis. In the seminar, apart from general concepts, we will discuss a specific application of this paradigm to simulations of condensed matter phenomena in the temporal dimension.
This seminar is part of the 𝐒𝐮𝐧𝐫𝐢𝐬𝐞 𝐕𝐚𝐥𝐥𝐞𝐲 𝐐𝐮𝐚𝐧𝐭𝐮𝐦 𝐑𝐞𝐬𝐞𝐚𝐫𝐜𝐡 𝐒𝐞𝐦𝐢𝐧𝐚𝐫𝐬 — a monthly series of open, interdisciplinary talks featuring Lithuanian and international researchers.