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Showing 1995 · quant-phShow all
3 papers · 2 filters
quant-ph1995★ 5 cited
Semiclassical Density Matrix Near the Top of a Barrier
F. J. Weiper, J. Ankerhold, H. Grabert
Employing the path integral approach, we calculate the semiclassical equilibrium density matrix of a particle moving in a nonlinear potential field for coordinates near the top of…
quant-ph1995★ 44 cited
On Galilei Invariance in Quantum Mechanics and the Bargmann Superselection Rule
Domenico Giulini
We reinvestigate Bargmann's superselection rule for the overall mass of particles in ordinary quantum mechanics with Galilei invariant interaction potential. We point out that…
quant-ph1995★ 38 cited
Dissipative Quantum Systems with Potential Barrier. General Theory and Parabolic Barrier
Joachim Ankerhold, Hermann Grabert, Gert-Ludwig Ingold
We study the real time dynamics of a quantum system with potential barrier coupled to a heat-bath environment. Employing the path integral approach an evolution equation for the ti…