Abstract

A new type of neutron star model (Q stars), in which high-density, electrically neutral baryonic matter is a coherent classical solution to an effective field theory of strong forces, and is bound in the absence of gravity, is considered. This model allows massive compact objects (suggesting that Cygnus X-1 and LMC X-3 may not be black holes), and has no macroscopic minimum mass. Because laboratory experiments on ordinary nuclei do not constrain the properties of bulk baryon matter, there is a wide new range of theoretical possibilities for compact objects. 38 refs.

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