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Second bound state of the positronium molecule and biexcitons

K. Varga·J. Usukura·Y. Suzuki
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Abstract

A new, hitherto unknown bound state of the positronium molecule, with orbital angular momentum L=1 and negative parity is reported. This state is stable against autodissociation even if the masses of the positive and negative charges are not equal. The existence of a similar state in two-dimension has also been investigated. The fact that the biexcitons have a second bound state may help the better understanding of their binding mechanism.

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K. Varga, J. Usukura, Y. Suzuki. 1998-02-25. Second bound state of the positronium molecule and biexcitons. https://doi.org/10.1103/physrevlett.80.1876

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