Abstract
A few years ago, Banks, Bender and Wu studied the tunneling phenomena involving many degrees of freedoml). They reduced the original question to a variational problem for finding an optimal change of configuration, referred to as the most probable escape path (MPEP) in phase space, which links the initial and the final states. Recently, Coleman gave an interesting interpretation to these MPEP as Euclidean solutions to a trivially related problem2). These methods have since been applied to non-abelian gauge theories for understanding the vacuum tunneling phenomena, and their relation to the Euclidean instanton solutions3). In the following, I wish to provide a simple tunneling process in molecular physics which may be relevant in some chemical or biomolecular systems.
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