The Snyder model is an example of noncommutative spacetime admitting a fundamental length scale and invariant under Lorentz transformations, that can be interpreted as a realization of the doubly special relativity axioms. Here, we consider its nonrelativistic counterpart, i.e. the Snyder model restricted to three-dimensional Euclidean space. We discuss the classical and the quantum mechanics of a free particle in this framework, and show that they strongly depend on the sign of a coupling constant, appearing in the fundamental commutators and proportional to the square of then fundamental scale. For example, if it is negative, momenta are bounded. On the contrary, if it is positive, positions and areas are quantized.We also give the exact solution of the harmonic oscillator equations both in the classical and the quantum case, and show that its frequency is energy dependent.
Classical and quantum mechanics of the nonrelativistic Snyder model
MIGNEMI, SALVATORE
2011-01-01
Abstract
The Snyder model is an example of noncommutative spacetime admitting a fundamental length scale and invariant under Lorentz transformations, that can be interpreted as a realization of the doubly special relativity axioms. Here, we consider its nonrelativistic counterpart, i.e. the Snyder model restricted to three-dimensional Euclidean space. We discuss the classical and the quantum mechanics of a free particle in this framework, and show that they strongly depend on the sign of a coupling constant, appearing in the fundamental commutators and proportional to the square of then fundamental scale. For example, if it is negative, momenta are bounded. On the contrary, if it is positive, positions and areas are quantized.We also give the exact solution of the harmonic oscillator equations both in the classical and the quantum case, and show that its frequency is energy dependent.
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