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TT: Fachverband Tiefe Temperaturen

TT 40: Focus Session: Recent Progresses in Criticality in the Presence of Boundaries and Defects I (joint session DY/TT)

Mittwoch, 20. März 2024, 09:30–12:30, A 151

In recent years there has been a renewed interest in critical systems in the presence of boundaries or, more generally, defects. This attention is driven by different perspectives. Numerical studies of quantum spin models have reported in some cases unexpected boundary critical behavior. This, in turns, has led to a reconsideration of the classical surface critical behavior problem, with the discovery of so-far overlooked boundary phases. In this context, numerous recent studies have considered the so-called symmetry-protected topological gapless systems, and in particular their boundary states. At the same time, advances in conformal field theory, specifically the conformal bootstrap program, have addressed the problem of boundaries and defects in conformally-invariant theories. This Focus Session brings together some of the main actors in the aforementioned advancements in boundary critical phenomena.

Organized by Francesco Parisen Toldin (Aachen) and Stefan Wessel (Aachen)

	09:30	TT 40.1	Hauptvortrag: Boundary behavior at classical and quantum phase transitions — •Max Metlitski
	10:00	TT 40.2	The contribution has been withdrawn.
	10:15	TT 40.3	Emergent geometry at the critical point — •Giacomo Gori
	10:30	TT 40.4	Many-body correlations at wetting. Exact results — •Alessio Squarcini
	10:45	TT 40.5	Emergent conformal boundaries from finite-entanglement scaling in matrix product states — •Rui-Zhen Huang
	11:00		15 min. break
	11:15	TT 40.6	Hauptvortrag: Criticality senses topology — Oleg Vasilyev, •Anna Maciolek, and Siegfried Dietrich
	11:45	TT 40.7	Critical Casimir forces for quenched surface disorder in the 2d Ising model — Luca Cervellera and •Fred Hucht
	12:00	TT 40.8	Quantifying nonuniversal corner free energy contributions in weakly-anisotropic two-dimensional critical systems — •Florian Kischel and Stefan Wessel
	12:15	TT 40.9	Confinement of magnetic solitons and edge states in van-der Waals FeOCl — •Angela Möller, Martin Panthöfer, Stefanie Berinskat, Fabian Predelli, and Peter Lemmens