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Massive vector multiplet inflation with Dirac-Born-Infeld type action
We investigate the inflation model with a massive vector multiplet in a case that the action of the vector multiplet is extended to the Dirac--Born--Infeld (DBI) type one. We show the massive DBI action in four-dimensional $\mathcal{N}=1$ supergravity and find that the higher-order corrections associated with the DBI extension make …