3 papers
cond-mat.stat-mech2025
Yang-Lee Zeros of 2D Nearest-Neighbor Antiferromagnetic Ising Models: A Numerical Linked Cluster Expansion Study
Mahmoud Abdelshafy, Muhammad Sedik
We study Yang-Lee zeros in the thermodynamic limit of the 2D nearest-neighbor antiferromagnetic Ising model on square and triangular lattices. We employ the Numerical Linked Cluste…
quant-ph2025
Onset of Quantum Chaos and Ergodicity in Spin Systems with Highly Degenerate Hilbert Spaces
Mahmoud Abdelshafy, Rubem Mondaini, Marcos Rigol
We show that in systems with highly degenerate energy spectra, such as the 2D transverse-field Ising model (2DTFIM) in the strong-field limit, quantum chaos can emerge in finite sy…
cond-mat.stat-mech2024
Numerical linked-cluster expansions for two-dimensional spin models with continuous disorder distributions
Mahmoud Abdelshafy, Marcos Rigol
We show that numerical linked cluster expansions (NLCEs) based on sufficiently large building blocks allow one to obtain accurate low-temperature results for the thermodynamic prop…