610 research outputs found
An approach to Kidney parameter identification by digital computer curve fitting of radiorenograms
The Urge to Detect, the Need to Clarify: Gricean Perspectives on Information, Misinformation and Disinformation
Born-Oppenheimer description of two atoms in a combined oscillator and lattice trap
We analyze the quantum states of two atoms in a combined harmonic oscillator
and periodic lattice trap in one spatial dimension. In the case of
tight-binding and only nearest neighbor tunneling, the equations of motion are
conveniently represented in the momentum representation. We show that in the
case of strong attraction between the particles, the different time scales of
relative and center-of-mass motion validate a separation of the problem similar
to the Born-Oppenheimer approximation applied in the description of electronic
and nuclear motion in molecules.Comment: 11 pages, 5 figure
Communicative Actions We Live By: The Problem with Fact-Checking, Tagging or Flagging Fake News - the case of Facebook
Relative and center-of-mass motion in the attractive Bose-Hubbard model
We present first-principle numerical calculations for few particle solutions
of the attractive Bose-Hubbard model with periodic boundary conditions. We show
that the low-energy many-body states found by numerical diagonalization can be
written as translational superposition states of compact composite systems of
particles. These compact states break the translational symmetry of the problem
and their center-of-mass and internal excitations offer simple explanations of
the energy spectrum of the full model.Comment: 12 pages, 9 figure
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