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quant-ph2015★ 16 cited
Anomalous behavior of the energy gap in the one-dimensional quantum XY model
Manaka Okuyama, Yuuki Yamanaka, Hidetoshi Nishimori +1
We re-examine the well-studied one dimensional spin-1/2 model to reveal its nontrivial energy spectrum, in particular the energy gap between the ground state and the first exc…
quant-ph2015
Anomalous behavior of the energy gap in the one-dimensional quantum XY model
Yuuki Yamanaka, Hidetoshi Nishimori
We show for the one-dimensional quantum model with that the energy gap between the ground and first excited states behaves anomalously as a function of the system size…