8 citations · 50 across the 11 of their papers we have counts for
11 papers
Quantum Vacuum Energy in Graphs and Billiards
L. Kaplan
The vacuum (Casimir) energy in quantum field theory is a problem relevant both to new nanotechnology devices and to dark energy in cosmology. The crucial question is the dependence…
Building and Destroying Symmetry in 1-D Elastic Systems
J. Flores, G. Monsivais, P. Mora +4
Locally periodic rods, which show approximate invariance with respect to translations, are constructed by joining unit cells. The spectrum then shows a band spectrum. We then b…
Doorway States and Billiards
J. A. Franco-Villafañe, J. Flores, J. L. Mateos +3
Whenever a distinct state is immersed in a sea of complicated and dense states, the strength of the distinct state, which we refer to as a doorway, is distributed in their neighbor…
Third quantization
Thomas H. Seligman, Tomaz Prosen
The basic ideas of second quantization and Fock space are extended to density operator states, used in treatments of open many-body systems. This can be done for fermions and boson…
Conformal Mapping and Bound States in Bent Waveguides
Emerson Sadurni, Wolfgang P. Schleich
Is it possible to trap a quantum particle in an open geometry? In this work we deal with the boundary value problem of the stationary Schroedinger (or Helmholtz) equation within a…
The Dirac-Moshinsky oscillator coupled to an external field and its connection to quantum optics
Juan Mauricio Torres, Emerson Sadurni, Thomas H. Seligman
The Dirac-Moshinsky oscillator is an elegant example of an exactly solvable quantum relativistic model that under certain circumstances can be mapped onto the Jaynes-Cummings model…
Spontaneous symmetry breaking by double lithium adsorption in polyacenes
Yenni P. Ortiz, Thomas H. Seligman
We show that adsorption of one lithium atom to a polyacenes, i.e. chains of linearly fused benzene rings, will cause this chain to be slightly deformed. If we adsorb a second ident…
Symmetry breaking: A tool to unveil the topology of chaotic scattering with three degrees of freedom
C. Jung, W. P. Karel Zapfe, O. Merlo +1
We shall use symmetry breaking as a tool to attack the problem of identifying the topology of chaotic scatteruing with more then two degrees of freedom. specifically we discuss the…
Seniority in quantum many-body systems
P. Van Isacker
The use of the seniority quantum number in many-body systems is reviewed. A brief summary is given of its introduction by Racah in the context of atomic spectroscopy. Several exten…
Two interacting electrons in a magnetic field: comparison of semiclassical, quantum, and variational solutions
Tobias Kramer
The quantum mechanical many-body problem is rarely analytically solvable. One notable exception is the case of two electrons interacting via a Coulomb potential in a uniform magnet…
Multipole analysis in cosmic topology
Peter Kramer
Low multipole amplitudes in the Cosmic Microwave Background CMB radiation can be explained by selection rules from the underlying multiply-connected homotopy. We apply a multipole…