Tunneling of a system with internal degrees of freedom

Details Tunneling of a system with internal degrees of freedom Tunneling of a system with internal degrees of freedom

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aps..aprc13002z&link_type=abstract

American Physical Society, APS April Meeting, April 16-19, 2005, abstract #C13.002

Physics

Nuclear Physics

Scientific paper

The tunneling reactions play crucial role in nuclear physics, astrophysics and chemical physics. However, the old question of how the internal structure of a tunneling composite object can ifluence the tunneling process remains poorly understood. We consider a model of a bound two-particle system tunneling through a potential barrier that acts only on one particle. In adiabatic motion, the intrinsic structure is adjusted as a function of the distance from the barrier (polarization effects). The effective potential for the tunneling of the center-of-mass of the two-body system is constructed and the penetrability coefficient is calculated. Comparison with standard point-like tunneling is done. Being simple enough to allow an accurate numerical solution, the problem is important for different physical and astrophysical applications. In addition, the problem allows straightforward generalizations to more realistic processes.

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