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Author

Antonio M. Garc'ia-Garc'ia

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Preprint Jul 2026

Entanglement transitions and multifractality in monitored free-fermions with random long-range hopping

We study the entanglement dynamics of a one-dimensional chain of monitored non-interacting complex fermions with random power-law hopping characterized by a decay exponent $\alpha$. For $\alpha \lesssim 1$, in stark contrast with the case of hopping to nearest neighbors, the scaling of the entanglement entropy (EE) of...

Bo Fan, Antonio M. Garc'ia-Garc'ia · 1 citation
Preprint Aug 2026

From integrability to many-body quantum chaos through a Markovian bath

Recent examples have confirmed the common belief that quantum chaos is always suppressed in the presence of an environment. Here we show that this is not always the case. We compute the Lyapunov exponent of a $q$-body Majorana Sachdev-Ye-Kitaev (SYK) model coupled to a Markovian bath. Provided that the jump operators d...

Xian-Long Liu, Antonio M. Garc'ia-Garc'ia · 0 citations
Preprint Jul 2026

Tuning quantum magic of pure quantum chaotic states with a gravity dual

Quantum magic is a fundamental resource that quantifies to what extent quantum states can be efficiently simulated on a classical computer. We study it for states constructed from the Sachdev-Ye-Kitaev (SYK) Hamiltonian with $N$ Majoranas by the fermionic anti-flatness (FAF). We show analytically that, in the large $N$...

Antonio M. Garc'ia-Garc'ia, Xianlong Liu, Jie-ping Zheng · 0 citations

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