Topical Issue on Frontiers in Nuclear, Heavy Ion and Strong Field Physics Tamás Biró, Carsten Greiner, Berndt Müller, Johann Rafelski and Horst Stöcker Eur. Phys. J. A, 54 2 (2018) 31 Published online: 21 February 2018 DOI: 10.1140/epja/i2018-12477-6