Influence of the Pauli exclusion principle on scattering properties of cobosons
Date
2015
Authors
Lohe, T.
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Journal article
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Physica B: Condensed Matter, 2015; 457:232-239
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Abstract
We examine the influence of the Pauli exclusion principle on the scattering properties of composite bosons (cobosons) made of two fermions, such as the exciton quasi particle. The scattering process incorporates boson-phonon interactions that arise due to lattice vibrations. Composite boson scattering rates increase with the entanglement between the two fermionic constituents, which comes with a large number of available single-fermion states. An important role is played by probabilities associated with accommodating an incoming boson among the remaining unoccupied Schmidt modes in the initial composite system. While due attention is given to bi-fermion bosons, the methodology is applicable to any composite boson made up of smaller boson fragments. Due to super-bunching in a system of multiple boson condensates such as bi-bosons, there is enhanced scattering associated with bosons occupying macroscopically occupied Schmidt modes, in contrast to the system of bi-fermion pairs
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Link to a related website: http://arxiv.org/pdf/1407.1091, Open Access via Unpaywall
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2014 Elsevier B.V.