Towards Dense Nuclear Matter in A Modified Sakai-Sugimoto Model

¹ Asia Pacific Center for Theoretical Physics, Pohang, Gyeongbuk 790-784, Korea
² Department of Physics, Pohang University of Science and Technology, Pohang, Gyeongbuk 790-784, Korea
³ Institut de Physique Théorique, CEA Saclay, 91191 GIf-sur-Yvette Cédex, France
⁴ Department of Physics, Hanyang University, Seoul 133-791, Korea

Abstract

As a part of the attempt to address dense baryonic matter, we first review holographic approaches to QCD. The big advantage of the holographic approaches is that they render strongly coupled 4D gauge theories as duals of certain weakly coupled string/supergravity that are well understood. Its relevance to real QCD is one of the central problems in hadron/nuclear physics as well as in the context of applied string theory. None of the models based on these holographic approaches presently available can adequately describe the system we are interested in, namely dense baryonic matter. Nevertheless, some aspects of the holographic approach are found to describe certain processes both in vacuum and in medium. In this talk we only present the structure of a model that appears to be closest to QCD, and has the potential to address the problem.