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    • Anisotropic constant-roll inflation for the Dirac–Born–Infeld model
    Tác giả : Duy H. Nguyen; Tuyen M. Pham; Tuan Q. Do;  Người hướng dẫn: -;  Đồng tác giả: - (2021)

    In this paper, we study a non-canonical extension of a supergravity-motivated model acting as a vivid counterexample to the cosmic no-hair conjecture due to its unusual coupling between scalar and electromagnetic fields. In particular, a canonical scalar field is replaced by the string-inspired Dirac–Born–Infeld one in this extension. As a result, exact anisotropic inflationary solutions for this Dirac–Born–Infeld model are figured out under a constant-roll condition. Furthermore, numerical calculations are performed to verify that these anisotropic constant-roll solutions are indeed attractive during their inflationary phase.