Holographic nuclear physics
Abstract
We analyze the phases of the SakaiSugimoto model at finite temperature and baryon chemical potential. Baryonic matter is represented either by 4branes in the 8branes or by strings stretched from the 8branes to the horizon. We find the explicit configurations and use them to determine the phase diagram and equation of state of the model. The 4brane configuration (nuclear matter) is always preferred to the string configuration (quark matter), and the latter is also unstable to density fluctuations. In the deconfined phase the phase diagram has three regions corresponding to the vacuum, quarkgluon plasma, and nuclear matter, with a firstorder and a secondorder phase transition separating the phases. We find that for a large baryon number density, and at low temperatures, the dominant phase has broken chiral symmetry. This is in qualitative agreement with studies of QCD at high density.
 Publication:

Journal of High Energy Physics
 Pub Date:
 November 2007
 DOI:
 10.1088/11266708/2007/11/056
 arXiv:
 arXiv:0708.0326
 Bibcode:
 2007JHEP...11..056B
 Keywords:

 High Energy Physics  Theory;
 High Energy Physics  Phenomenology
 EPrint:
 27 pages, 26 figures. v2: Added a comment about higher derivative corrections to the DBI action in the smeared instanton in section 2.1. v3: References added, version published in JHEP. v4: misprints corrected