88 citations · 193 across the 16 of their papers we have counts for
6 papers · 1 filter
Reciprocity in quantum, electromagnetic and other wave scattering
László Deák, Tamás Fülöp
The reciprocity principle is that, when an emitted wave gets scattered on an object, the scattering transition amplitude does not change if we interchange the source and the detect…
Singular Potentials in Quantum Mechanics and Ambiguity in the Self-Adjoint Hamiltonian
Tamás Fülöp
For a class of singular potentials, including the Coulomb potential (in three and less dimensions) and with the coefficient in a certain range ( being a space…
Quantum Abacus
Taksu Cheon, Izumi Tsutsui, Tamas Fulop
We show that the U(2) family of point interactions on a line can be utilized to provide the U(2) family of qubit operations for quantum information processing. Qubits are realized…
Physics of singular points in quantum mechanics
Izumi Tsutsui, Tamas Fulop
Defects or junctions in materials serve as a source of interactions for particles, and in idealized limits they may be treated as singular points yielding contact interactions. In…
Spectral properties on a circle with a singularity
Tamas Fulop, Izumi Tsutsui, Taksu Cheon
We investigate the spectral and symmetry properties of a quantum particle moving on a circle with a pointlike singularity (or point interaction). We find that, within the U(2) fami…
Building a frame and gauge free formulation of quantum mechanics
T. Fulop, S. D. Katz
The wave function of quantum mechanics is not a boost invariant and gauge invariant quantity. Correspondingly, reference frame dependence and gauge dependence are inherited to most…