266 citations · 349 across the 2 of their papers we have counts for
2 papers
quant-ph2007★ 83 cited
Coulomb analogy for nonhermitian degeneracies near quantum phase transitions
P. Cejnar, S. Heinze, M. Macek
Degeneracies near the real axis in a complex-extended parameter space of a hermitian Hamiltonian are studied. We present a method to measure distributions of such degeneracies on t…
quant-ph2007★ 266 cited
Excited state quantum phase transitions in many-body systems
M. A. Caprio, P. Cejnar, F. Iachello
Phenomena analogous to ground state quantum phase transitions have recently been noted to occur among states throughout the excitation spectra of certain many-body models. These ex…