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• W3217045731 startingPage "018" @default.
• W3217045731 abstract "We find an exact solution of the equations of motion of a two-field cosmological model, which realizes multi-field dark energy. The latter is characterized by field-space trajectories with turning rates that are always large. We study a class of two-field models and show that it is possible to have such trajectories, giving accelerated space-time expansion, even when the scalar potential preserves the rotational invariance of the field-space metric. For the case of Poincar'e-disk field space, we derive the form of the scalar potential compatible with such background solutions and, furthermore, we find the exact solutions analytically. Their field-space trajectories are spirals inward, toward the center of the Poincar'e disk. Interestingly, the functional form of the relevant scalar potential is compatible with a certain hidden symmetry, although the latter is broken by the presence of a constant term." @default.
• W3217045731 created "2021-12-06" @default.
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• W3217045731 date "2022-03-01" @default.
• W3217045731 modified "2023-09-27" @default.
• W3217045731 title "Dark energy from inspiraling in field space" @default.
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• W3217045731 doi "https://doi.org/10.1088/1475-7516/2022/03/018" @default.
• W3217045731 hasPublicationYear "2022" @default.
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