2015/11/11 by Prasad Hegde, Heng-Tong Ding, Hegde, Prasad +1 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph
paper · pdf · doi:10.48550/arxiv.1511.03378
Contribution to the proceedings of the 33rd International Symposium on Lattice Field Theory, July 14-18, Kobe Japan
arxiv created 2015/11/11 · openalex publication_date 2015/11/11 · openalex created_date 2019/06/27 · arxiv updated 2019/08/14 · openalex updated_date 2026/07/28
We present preliminary results from an ongoing calculation to determine the curvature of the chiral phase transition line in the chiral limit along the light-light, light-strange and strange-strange chemical potential directions. We do this by studying the appropriate μ-derivatives of the chiral condensate as a function of the quark mass and comparing them to the scaling predictions of 3d-O(N) theory. We work at a fixed lattice spacing, Nτ=6 and at four different quark masses mπ≈ 140, 110, 90 and 80 MeV. For the light quark curvature, we obtain a value 0.03\leqslantκll\leqslant0.11. We also find that both strange and light-strange curvatures are around an order of magnitude smaller. Currently, the light-strange curvature is the least constrained curvature and could have either sign, though our results seem to prefer a slightly negative value.