Abstract
Baryonic matter is notoriously difficult to deal with in the large-N limit, as baryons become operators of very large dimension with N fields in the fundamental representation. This issue is also present in gauge/gravity duals as baryons are described by very heavy localized objects. There are however alternative large-N extrapolations of QCD where small baryonic operators exist and can be treated on an equal footing to mesons. We explore the possibility of turning on a finite density of “light” baryons in a theory with a hadronic mass gap using a gauge/gravity construction based on the D3/D7 intersection. We find a novel phase with spontaneous breaking of baryon symmetry at zero temperature.
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Hoyos, C., Itsios, G. & Vasilakis, O. Baryon superfluids in AdS/CFT with flavor. J. High Energ. Phys. 2017, 139 (2017). https://doi.org/10.1007/JHEP01(2017)139
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DOI: https://doi.org/10.1007/JHEP01(2017)139