On kinetic energy stabilized superconductivity in cuprates
arXiv:cond-mat/0607175 · doi:10.1103/PhysRevB.75.012501
Abstract
The possibility of kinetic energy driven superconductivity in cuprates as was recently found in the $tJ$ model is discussed. We argue that the violation of the virial theorem implied by this result is serious and means that the description of superconductivity within the $tJ$ model is pathological.
3 pages, v2 includes additional references