Second Bound State of the Positronium Molecule and Biexcitons

K. Varga, J. Usukura, and Y. Suzuki
Phys. Rev. Lett. 80, 1876 – Published 2 March 1998
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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 dimensions has also been investigated. The fact that the biexcitons have a second bound state may aid in the better understanding of their binding mechanism.

  • Received 2 October 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.1876

©1998 American Physical Society

Authors & Affiliations

K. Varga1,2, J. Usukura3, and Y. Suzuki4

  • 1Institute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), Debrecen, H-4001, Hungary
  • 2Institute for Physical and Chemical Research (RIKEN), Wako, Saitama 351-01, Japan
  • 3Graduate School of Science and Technology, Niigata University, Niigata 950-21, Japan
  • 4Department of Physics, Faculty of Science, Niigata University, Niigata 950-21, Japan

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Issue

Vol. 80, Iss. 9 — 2 March 1998

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