Paper: Quark matter in compact stars?

Nature 445, E7-E8 (18 January 2007) | doi:10.1038/nature05582

Quark matter in compact stars?
M. Alford1, D. Blaschke2,3, A. Drago4,5, T. Klähn3,6, G. Pagliara4,5 and J. Schaffner-Bielich7

Arising from: F. Özel. Nature 441, 1115-1117 (2006); Özel replies

In a theoretical interpretation of observational data from the neutron star EXO 0748-676, Özel concludes that quark matter probably does not exist in the centre of neutron stars1. However, this conclusion is based on a limited set of possible equations of state for quark matter. Here we compare Özel's observational limits with predictions based on a more comprehensive set of proposed quark-matter equations of state from the literature, and conclude that the presence of quark matter in EXO 0748-676 is not ruled out.

1.. Department of Physics, Washington University, St Louis, Missouri 63130, USA
Email:
2.. Instytut Fizyki Teoretycznej, Uniwersytet Wroclawski, 50-204 Wroclaw, Poland
3.. Institut für Physik, Universität Rostock, 18051 Rostock, Germany
4.. Dipartimento di Fisica, Universitä di Ferrara, 44100 Ferrara, Italy
5.. INFN, Sezione di Ferrara, 44100 Ferrara, Italy
6.. GSI, 64291 Darmstadt, Germany
7.. Institut für Theoretische Physik, Goethe Universität, 60438 Frankfurt am Main, Germany
Source: Nature
http://www.nature.com/nature/journal...ture05582.html


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Robert Karl Stonjek