NUCLEAR LEVEL DENSITY, QUANTUM CHAOS AND RELATED PHYSICS

STUDY OF NUCLEAR LEVEL DENSITY AND SPIN CUT-OFF FACTORS

Nuclear level densities and spin cut-off factors have been deduced for nuclei in the mass region 24‹A‹63,from a microscopic theory, which includes nuclear pairing interaction. Single particle levels for both Seeger and Nilsson potentials were used in the calcdations. Level densities extracted from the theory are compared with their conesponding experimental values, It is found that the overall...

Nonlinear Dynamics in Quantum Physics – Quantum Chaos and Quantum Instantons

We discuss the recently proposed quantum action-its interpretation, its motivation , its mathematical properties and its use in physics: quantum mechanical tunneling, quantum instantons and quantum chaos. 1. Introduction. Modern physics returns to some of its origins dating back to the first part of the last century. Examples are entanglement, according to Schrödinger the most peculiar property...

Quantum versus Chaos Fundamental Theories of Physics

Nonlinear Dynamics in Quantum Physics–the Study of Quantum Chaos

We use the quantum action to study the dynamics of quantum system at finite temperature. We construct the quantum action non-perturbatively and find temperature dependent action parameters. Here we apply the quantum action to study quantum chaos. We present a numerical study of a classically chaotic 2-D Hamiltonian system harmonic oscillators with anharmonic coupling. We compare Poincaré sectio...

Nuclear masses set bounds on quantum chaos.

It has been suggested that chaotic motion inside the nucleus may significantly limit the accuracy with which nuclear masses can be calculated. Using a power spectrum analysis we show that the inclusion of additional physical contributions in mass calculations, through many-body interactions or local information, removes the chaotic signal in the discrepancies between calculated and measured mas...