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cond-mat.dis-nn2023★ 1 cited
Correspondence between excited energy eigenstates and local minima of energy landscape in quantum spin systems
Yang Wei Koh
The quantum-classical correspondence between local minima on the classical energy landscape and excited eigenstates in the energy spectrum is studied within the context of many-bod…
cond-mat.dis-nn2018
Effects of dynamical paths on the energy gap and the corrections to free energy in path integrals of mean-field quantum spin systems
Yang Wei Koh
In current studies of mean-field quantum spin systems, much attention is placed on the calculation of the ground-state energy and the excitation gap, especially the latter which pl…
cond-mat.dis-nn2016
Effects of low-lying excitations on ground-state energy and energy gap of Sherrington-Kirkpatrick model in transverse field
Yang Wei Koh
We present an extensive numerical study of the Sherrington-Kirkpatrick model in transverse field. Recent numerical studies of quantum spin-glasses have focused on exact diagonaliza…