Quantum Tunneling and Scattering of a Composite Object: Revisited and Reassessed

Details Quantum Tunneling and Scattering of a Composite Object: Revisited and Reassessed Quantum Tunneling and Scattering of a Composite Object: Revisited and Reassessed

2010-10-19

arxiv.org/abs/1010.3973v1

Phys.Rev.C82:064607,2010

Physics

Nuclear Physics

Nuclear Theory

21 pages, 25 figures

Scientific paper

10.1103/PhysRevC.82.064607

This work presents an extensive exploration of scattering and tunneling involving composite objects with intrinsic degrees of freedom. We aim at exact solutions to such scattering problems. Along this path we demonstrate solution to model Hamiltonians, and develop different techniques for addressing these complex reaction-physics problems, discuss their applicability, and investigate the relevant convergence issues. As examples, we study the scattering of a two-constituent deuteron-like systems either with an infinite set of intrinsic bound states or with a continuum of states that allows for breakup. We show that the internal degrees of freedom of the projectile and its virtual excitation in the course of reactions play an important role in shaping the S-matrix and related observables, giving rise to enhanced or reduced tunneling in various situations.

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