2011/11/17 by B. Chatterjee, Bhaswar Chatterjee, Hiranmaya Mishra +1
Mathematics · Physics and Astronomy · #Condensed matter physics #Geometry #High-Energy Particle Collisions Research #Mathematical physics #Mathematics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scalar (mathematics) #Tricritical point #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.85.114008
10 pages, 12 figures
arxiv created 2011/11/17 · openalex publication_date 2012/06/04 · arxiv updated 2015/06/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate chiral symmetry breaking and strong CP violation effects in the phase diagram of strongly interacting matter. We demonstrate the effect of strong CP violating terms on the phase structure at finite temperature and densities in a three-flavor Nambu-Jona-Lasinio model including the Kobayashi-Maskawa-t' Hooft determinant term. This is investigated using an explicit structure for the ground state in terms of quark-antiquark condensates for both the scalar and the pseudoscalar channels. CP restoring transition with temperature at zero baryon density is found to be a second order transition at \ensuremathθ=\ensuremathπ while the same at finite chemical potential and small temperature turns out to be a first order transition. Within the model, the tricritical point is found to be (\ensuremathμc,Tc)\ensuremath≃(273,94) MeV at \ensuremathθ=\ensuremathπ for such a transition.