Dimensional effects on the momentum distribution of bosonic trimer states
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Data
2013-01-11
Autores
Bellotti, F. F.
Frederico, T.
Yamashita, Marcelo Takeshi [UNESP]
Fedorov, D. V.
Jensen, A. S.
Zinner, N. T.
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Resumo
The momentum distribution is a powerful probe of strongly interacting systems that are expected to display universal behavior. This is contained in the contact parameters which relate few- and many-body properties. Here we consider a Bose gas in two dimensions and explicitly show that the two-body contact parameter is universal and then demonstrate that the momentum distribution at next-to-leading order has a logarithmic dependence on momentum which is vastly different from the three-dimensional case. Based on this, we propose a scheme for measuring the effective dimensionality of a quantum many-body system by exploiting the functional form of the momentum distribution. © 2013 American Physical Society.
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Palavras-chave
Bose gas, Contact parameters, Dimensional effects, Functional forms, Interacting system, Logarithmic dependence, Many-body, Momentum distributions, Next-to-leading orders, Quantum many-body systems, Two-dimension, Universal behaviors, Oligomers, Quantum theory, Momentum
Como citar
Physical Review A - Atomic, Molecular, and Optical Physics, v. 87, n. 1, 2013.