Kähler correction to F-term inflation in supergravity

Including logarithmic corrections to the minimal Kähler potential, we revisit the F-term inflationary scenario in supergravity. We find that logarithmic terms in the Kähler potential allow a trajectory along which a given symmetry is spontaneously broken during inflation epoch. Accordingly, unwanted topological defects such as magnetic monopoles and cosmic strings can be diluted away. The new parameter accompanied with the Kähler potential is helpful to adjust the spectral index to be consistent with the observational data.