Quantum anti-cetrifugal force

Details Quantum anti-cetrifugal force Quantum anti-cetrifugal force

2001-08-14

arxiv.org/abs/quant-ph/0108069v2

Phys.Rev.A65:022101,2002

Physics

Quantum Physics

8 pages, including three eps figures, submitted to Phys. Rev. A. Figures substituted

Scientific paper

10.1103/PhysRevA.65.022101

In a two-dimensional world a free quantum particle of vanishing angular momentum experiences an attractive force. This force originates from a modification of the classical centrifugal force due to the wave nature of the particle. For positive energies the quantum anti-centrifugal force manifests itself in a bunching of the nodes of the energy wave functions towards the origin. For negative energies this force is sufficient to create a bound state in a two-dimensional delta function potential. In a counter-intuitive way the attractive force pushes the particle away from the location of the delta function potential. As a consequence, the particle is localized in a band-shaped domain around the origin

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