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[Fizinfo] BME ElmFiz szeminárium, máj. 22. Vanja Marić

From: Kormos Márton <kormos.marton AT ttk.bme.hu>
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Subject: [Fizinfo] BME ElmFiz szeminárium, máj. 22. Vanja Marić
Date: Wed, 20 May 2026 11:24:13 +0000
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MEGHÍVÓ

BME Elméleti Fizika Szeminárium,

máj. 22. péntek 10h15,

1111 Budapest, Budafoki út 8., BME F III. magasföldszint 01.,
Elméleti Fizika Tanszék szemináriumi szoba

Vanja Marić (University of Ljubljana)
Slow dynamics from a nested hierarchy of frozen states

We identify the mechanism of slow heterogeneous relaxation in quantum
kinetically constrained models (KCMs) in which the potential energy strength
is controlled by a coupling parameter. The regime of slow relaxation includes
the large-coupling limit. By expanding around that limit, we reveal a nested
hierarchy of states that remain frozen on time scales determined by powers of
the coupling. The classification of such states, together with the evolution
of their Krylov complexity, reveals that these time scales are related to the
distance between the sites where facilitated dynamics is allowed by the
kinetic constraint. While correlations within frozen states relax slowly and
exhibit metastable plateaus that persist on time scales set by powers of the
coupling parameter, the correlations in the rest of the states decay rapidly.
We compute the plateau heights of correlations across all frozen states up to
second-order corrections in the inverse coupling. Our results explain slow
relaxation in quantum KCMs and elucidate dynamical heterogeneity by relating
the relaxation times to the spatial separations between the active regions.

Ref: V. Marić, L. Paljk, L. Zadnik Phys. Phys. Rev. B 113, 024313 (2026)

Minden érdeklődőt szeretettel várunk.

A további program megtekinthető itt: https://physics.ttk.bme.hu/theoryseminars

Kormos Márton,
szemináriumi koordinátor

[Fizinfo] BME ElmFiz szeminárium, máj. 22. Vanja Marić, Kormos Márton, 05/20/2026