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Descripción
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| Two-, three-, and four-boson systems are studied close to the unitary limit using potential models constructed to reproduce the minimal information given by the two-body scattering length a and the two-body binding energy or virtual-state energy E2. The particular path used to reach the unitary limit is given by varying the potential strength. In this way the energy spectrum in the three- and four-boson systems is computed. The lowest-energy states show finite-range effects absorbed in the construction of level functions that can be used to study real systems. Higher-energy levels are free from finite-range effects, therefore the corresponding level functions tend to the zero-range universal function. Using this property, a zero-range equation for the four-boson system is proposed and the four-boson universal function is computed. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Physical Review a |
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ISSN
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1050-2947 |
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Factor de impacto JCR
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2,991 |
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Información de impacto
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Datos JCR del año 2013 |
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Volumen
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93 |
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DOI
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Número de revista
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Desde la página
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062701-1 |
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Hasta la página
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062701-7 |
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Mes
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SIN MES |
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Ranking
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