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As the first in a series of systematic work on dense hadronic matter, we study the properties of the pion in dense medium using Skyrme's effective Lagrangian as a unified theory of the hadronic interactions applicable in the large N c limit. Dense baryonic matter is described as the ground state of a skyrmion matter which appears in two differentiated phases as a function of matter density: i) at high densities as a stable cubic-centered (CC) half-skyrmion crystal; ii) at low densities as an unstable face-centered cubic (FCC) skyrmion crystal. We substitute the latter by a stable inhomogeneous phase of lumps of dense matter, which represents a naive Maxwell construction of the phase transition. This baryonic dense medium serves as a background for the pions whose effective in-medium Lagrangian we construct by allowing time-dependent quantum fluctuations on the classical dense matter field. We find that the same parameter which describes the phase transition for baryonic matter, the expectation value of the σ field, also describes the phase transition for the dynamics of the in-medium pion. Thus, the structure of the baryonic ground state crucially determines the behavior of the pion in the medium. As matter density increases, σ decreases, a phenomenon which we interpret to signal, in terms of the parameters of the effective pion Lagrangian f * π and m * π , the restoration of chiral symmetry at high density. Our calculation shows also the important role played by the higher powers in the density as it increases and chiral symmetry is being restored. This feature is likely to be generic at high density although our ground state may not be the true ground state.

† Deceased. We dedicate this paper to Giorgio's memory. We will strive to make this experiment a great success and a tribute to his memory. He will be sorely missed. AbstractThe MoEDAL experiment at Point 8 of the LHC ring is the seventh and newest LHC experiment. It is dedicated to the search for highly ionizing particle avatars of physics beyond the Standard Model, extending significantly the discovery horizon of the LHC. A MoEDAL discovery would have revolutionary implications for our fundamental understanding of the Microcosm. MoEDAL is an unconventional and largely passive LHC detector comprised of the largest array of Nuclear Track Detector stacks ever deployed at an accelerator, surrounding the intersection region at Point 8 on the LHC ring. Another novel feature is the use of paramagnetic trapping volumes to capture both electrically and magnetically charged highly-ionizing particles predicted in new physics scenarios. It includes an array of TimePix pixel devices for monitoring highly-ionizing particle backgrounds. The main passive elements of the MoEDAL detector do not require a trigger system, electronic readout, or online computerized data acquisition. The aim of this paper is to give an overview of the MoEDAL physics reach, which is largely complementary to the programs of the large multi-purpose LHC detectors ATLAS and CMS. project grant; the V-P Research Notes 1 Defined to be a convolution of the efficiency and acceptance 2 The concept of Dirac (magnetic) charge is presented in Section 5. 3 If |n| = 1, this is only true for magnetic charge coupled to 2 H(S = 1, |q| = 1/2), 8 Li(S = 2, |q| = 3/2) and 10 B(S = 3, |q| = 5/2). 4 The reader should notice that the two-loop processes of Fig. 28(b), which couple the IC gluons to the fermionic SM sector suffer, in addition to the loop suppression, an additional helicity suppression, as compared to the diagram of Fig, 28(a), and are therefore non-leading contributions.