作者: D Marian , E Colomés , X Oriols
DOI: 10.1088/0953-8984/27/24/245302
关键词: Quantum tunnelling 、 Hamiltonian (quantum mechanics) 、 Wave packet 、 Quantum mechanics 、 Scattering 、 Exchange interaction 、 Electron 、 Slater determinant 、 Mesoscopic physics 、 Physics
摘要: Two-particle scattering probabilities in tunneling scenarios with exchange interaction are analyzed quasi-particle wave packets. Two initial one-particle packets (with opposite central momentums) spatially localized at each side of a barrier. After impinging upon barrier, packet splits into transmitted and reflected components. When the two-particle anti-symmetrical state is defined as Slater determinant any type (normalizable) packet, it shown that probability detecting two (identically injected) electrons same barrier different from zero very common (single or double barrier) scenarios. In some particular scenarios, components become orthogonal mentioned reproduce those values associated to distinguishable particles. These unexpected non-zero still present when non-separable Coulomb non-symmetrical potentials considered. On other hand, for close Hamiltonian eigenstates, usual found literature recovered. The generalization many-particle low high phase-space density also analyzed. far-reaching consequences these accurate evaluation quantum noise mesoscopic systems briefly indicated.