摘要
ηN interactions are investigated in hot magnetized asymmetric nuclear matter using the chiral SU(3)model and chiral perturbation theory(ChPT).In the chiral modcl,thc in-medium properties of η-mesons are calcu-lated using medium modified scalar densities under the influence of an extermal magnetic field.Further,in a com-bined chiral model and ChPT approach,off-shell contributions of the ηN interactions are evaluated from the ChPTeffective ηN Lagrangian,and the in-medium effect of scalar densities are incorporated from the chiral SU(3)model.We find that the magnetic field has a significant effect on the in-medium mass and optical potential of η mesons,andwe observe a deeper mass-shift in the combined chiral model and ChPT approach than in the solo chiral SU(3)model.In both approaches,no additional mass-shift is observed due to the uncharged nature of η mesons in the presenceof a magnetic field.
