Dr. Natalia Chepiga: Publications

$\mathbb{Z}_4$ transitions in quantum loop models on a zig-zag ladder

SciPost Physics Stichting SciPost 17:5 (2024) 144

Authors:

Bowy La Riviere, Natalia Chepiga

Abstract:

We study the nature of quantum phase transitions out of

\mathbb{Z}_4

ℤ 4 ordered phases in quantum loop models on a zig-zag ladder. We report very rich critical behavior that includes a pair of Ising transitions, a multi-critical Ashkin-Teller point and a remarkably extended interval of a chiral transition. Although plaquette states turn out to be essential to realize chiral transitions, we demonstrate that critical regimes can be manipulated by deforming the model as to increase the presence of leg-dimerized states. This can be done to the point where the chiral transition turns into first order, we argue that this is associated with the emergence of a critical end point.

Numerical investigation of quantum phases and phase transitions in a two-leg ladder of Rydberg atoms

ArXiv 2411.05494 (2024)

Authors:

Jose Soto, Natalia Chepiga

Probing universal critical scaling with scan density matrix renormalization group

Physical Review B American Physical Society (APS) 110:14 (2024) 144401

Resolving chiral transitions in one-dimensional Rydberg arrays with quantum Kibble-Zurek mechanism and finite-time scaling

Physical Review B American Physical Society (APS) 110:12 (2024) 125113

Authors:

Jose Soto Garcia, Natalia Chepiga

$\mathbb{Z}_4$ transitions in quantum loop models on a zig-zag ladder

ArXiv 2406.20093 (2024)

Authors:

Bowy M La Rivière, Natalia Chepiga

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