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Astron. Astrophys. 330, 10-13 (1998)

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Late formation of quark stars and their possible survival

Ashok Goyal 1, 2 and Deepak Chandra 1

1 Department of Physics and Astrophysics, University of Delhi, Delhi 110 007, India (e-mail: agoyal@ducos.ernet.in)
2 Inter-University, Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune, 411 007, India

Received 30 January 1997 / Accepted 25 August 1997


We have studied the late formation of quark stars at a temperature much lower than the quark-hadron phase transition temperature by calculating the rate of formation of hadron bubbles for interacting quark gluon plasma and hadron gas and by incorporating the effect of curvature energy. This is essential to resolve the horizon problem as well as the survivability of these objects. We find that a small change in surface tension results in a large variation in the size and mass of these objects and a mass of the order of [FORMULA] to one solar mass requires a rather large value of the surface tension.

Key words: dense matter – elementary particles – early Universe

© European Southern Observatory (ESO) 1998

Online publication: January 8, 1998