Steffen A. Bass

Steffen A. Bass

Arts and Sciences Distinguished Professor of Physics

Professor of Physics

Chair of Physics

Office Location: 
261D Physics, Durham, NC 27708
Front Office Address: 
Box 90305, Durham, NC 27708-0305
(919) 660-2479


Prof. Bass does research at the intersection of theoretical nuclear and particle physics, in particular studying highly energetic collisions of heavy nuclei, with which one aims to create a primordial state of matter at extremely high temperatures and densities (the Quark-Gluon-Plasma) that resembles the composition of the early Universe shortly after the Big Bang. 

It has been only in the last two decades that accelerators have been in operation that give us the capabilities to create the conditions of temperature and density in the laboratory that are favorable for the Quark-Gluon-Plasma  (QGP) to exist. The Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory and the accompaniment of detector systems were built specifically to observe and study this phase of matter. Similar studies have recently commenced at the CERN Large Hadron Collider. The experiments at RHIC have discovered a new form of ultra-dense matter with unprecedented properties, a plasma composed of unbound quarks and gluons, that appears to behave as a nearly ``perfect liquid.''

Prof. Bass is a leading expert in the phenomenology of the Quark-Gluon-Plasma (QGP) and in knowledge extraction from large scale data sets via computational modeling. He is best known for his work developing a variety of computational models for the description of these ultra-relativistic heavy-ion collisions, as well as for his contributions to the phenomenology of the QGP and the determination of the shear viscosity of the QGP.

 Prof. Bass is a member of the Divisions of Nuclear and Computational Physics of the American Physical Society. He has published more than 160 peer-reviewed articles. He is a member of the Editorial Board of Journal of Physics G: Nuclear and Particle Physics.  In 2014 he was named Outstanding Referee for APS Journals and was elected a Fellow of the American Physical Society.

Education & Training

  • Ph.D., Goethe Universitat Frankfurt Am Main (Germany) 1997

  • M.S., Goethe Universitat Frankfurt Am Main (Germany) 1993

Aarts, G., et al. “Heavy-flavor production and medium properties in high-energy nuclear collisions --What next?European Physical Journal A, vol. 53, no. 5, May 2017. Scopus, doi:10.1140/epja/i2017-12282-9. Full Text

Bluhm, M., et al. “Impact of resonance decays on critical point signals in net-proton fluctuations.” European Physical Journal C, vol. 77, no. 4, Apr. 2017. Scopus, doi:10.1140/epjc/s10052-017-4771-3. Full Text

Cao, S., et al. “Suppression and Two-Particle Correlations of Heavy Mesons in Heavy-Ion Collisions.” Nuclear Physics A, vol. 956, Dec. 2016, pp. 505–08. Scopus, doi:10.1016/j.nuclphysa.2015.12.012. Full Text

Bernhard, J. E., et al. “Applying Bayesian parameter estimation to relativistic heavy-ion collisions: Simultaneous characterization of the initial state and quark-gluon plasma medium.” Physical Review C, vol. 94, no. 2, Aug. 2016. Scopus, doi:10.1103/PhysRevC.94.024907. Full Text

Xu, Y., et al. “Heavy-flavor dynamics in relativistic p-Pb collisions at √sNN = 5.02 TeV.” Nuclear and Particle Physics Proceedings, vol. 276–278, Jan. 2016, pp. 225–28. Scopus, doi:10.1016/j.nuclphysbps.2016.05.050. Full Text

Shen, C., et al. “The iEBE-VISHNU code package for relativistic heavy-ion collisions.” Computer Physics Communications, vol. 199, Jan. 2016, pp. 61–85. Scopus, doi:10.1016/j.cpc.2015.08.039. Full Text

Hao, Lihua, et al. “Effective Visualization of Temporal Ensembles.Ieee Transactions on Visualization and Computer Graphics, vol. 22, no. 1, Jan. 2016, pp. 787–96. Epmc, doi:10.1109/tvcg.2015.2468093. Full Text

Cao, S., et al. “Modeling of heavy-flavor pair correlations in Au-Au collisions at 200A GeV at the BNL Relativistic Heavy Ion Collider.” Physical Review C  Nuclear Physics, vol. 92, no. 5, Nov. 2015. Scopus, doi:10.1103/PhysRevC.92.054909. Full Text

Cao, S., et al. “The influence of initial state fluctuations on heavy quark energy loss in relativistic heavy-ion collisions.” Journal of Physics G: Nuclear and Particle Physics, vol. 42, no. 12, Nov. 2015. Scopus, doi:10.1088/0954-3899/42/12/125104. Full Text

Cao, S., et al. “Energy loss, hadronization, and hadronic interactions of heavy flavors in relativistic heavy-ion collisions.” Physical Review C  Nuclear Physics, vol. 92, no. 2, Aug. 2015. Scopus, doi:10.1103/PhysRevC.92.024907. Full Text