Reconstruction of f-essence and fermionic Chaplygin gas models of dark energy

Abstract

Recently, it was proposed a new fermionic model of dark energy, the so-called f-essence. In this work, we first present fermionic Chaplygin gas models of dark energy corresponding to the usual Einstein-Dirac theory. Then we explicitly reconstruct the different f-essence models. In particular, these models include the fermionic Chaplygin gas and the fermionic generalized Chaplygin gas models of dark energy. We also derive the equation of state parameter of the selected f-essence models.