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arXiv · 1206.6280

Effective Field Theory for Bound State Reflection

Michelle Pine·Dean Lee
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Abstract

Elastic quantum bound-state reflection from a hard-wall boundary provides direct information regarding the structure and compressibility of quantum bound states. We discuss elastic quantum bound-state reflection and derive a general theory for elastic reflection of shallow dimers from hard-wall surfaces using effective field theory. We show that there is a small expansion parameter for analytic calculations of the reflection scattering length. We present a calculation up to second order in the effective Hamiltonian in one, two, and three dimensions. We also provide numerical lattice results for all three cases as a comparison with our effective field theory results. Finally, we provide an analysis of the compressibility of the alpha particle confined to a cubic lattice with vanishing Dirichlet boundaries.

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Michelle Pine, Dean Lee. 2012-06-27. Effective Field Theory for Bound State Reflection. https://doi.org/10.1016/j.aop.2012.12.009

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