Classical and Quantum-like approaches to Charged-Particle Fluids in a Quadrupole

Details Classical and Quantum-like approaches to Charged-Particle Fluids in a Quadrupole Classical and Quantum-like approaches to Charged-Particle Fluids in a Quadrupole

2001-12-20

arxiv.org/abs/quant-ph/0112123v1

Physics

Quantum Physics

LaTex, to appear in Physica Scripta

Scientific paper

10.1238/Physica.Regular.065a0034

A classical description of the dynamics of a dissipative charged-particle fluid in a quadrupole-like device is developed. It is shown that the set of the classical fluid equations contains the same information as a complex function satisfying a Schrodinger-like equation in which Planck's constant is replaced by the time-varying emittance, which is related to the time-varying temperature of the fluid. The squared modulus and the gradient of the phase of this complex function are proportional to the fluid density and to the current velocity, respectively. Within this framework, the dynamics of an electron bunch in a storage ring in the presence of radiation damping and quantum-excitation is recovered. Furthermore, both standard and generalized (including dissipation) coherent states that may be associated with the classical particle fluids are fully described in terms of the above formalism.

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