Properties of hadron screening masses at finite baryonic density
Oct, 20047 pages
Published in:
- Phys.Lett.B 609 (2005) 265-270
e-Print:
- hep-lat/0410017 [hep-lat]
Report number:
- SWAT-415
View in:
Citations per year
Abstract: (Elsevier)
The properties of hadron screening masses around the deconfinement phase transition at finite baryonic density can be studied by evaluating the Taylor coefficients with respect to the iso-scalar ( μS=μu=μd ) and iso-vector ( μV=μu=−μd ) chemical potentials, where μu and μd are u and d quark chemical potentials. We simulate 2-flavour lattice QCD with staggered fermions on a 122×24×6 lattice with ma=0.05 and 0.10 and report investigations of nucleon, pseudo-scalar and vector mesons. We present new, strong evidence that in the confining phase, the screening masses at μ=0 have significant temperature dependence, but the effect of μS is very small. Above the critical temperature, the second derivative terms of mesons rapidly increase as contrasted to the case of baryon. We also study the responses of the screening masses to an iso-vector chemical potential and discuss some of the issues related to the properties of hadron masses at finite μ .Note:
- 7 pages with 5 figures; added two new references, the title of article and the section 'Concluding Remarks' are slightly changed
- fermion: lattice field theory
- gauge field theory: SU(3)
- hadron: mass
- mass: screening
- fermion: staggered
- flavor: 2
- potential: chemical
- numerical calculations: Monte Carlo
References(39)
Figures(6)