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On the superstring-inspired quantum correction to the Starobinsky model of inflationстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Ketov Sergei V., Pozdeeva Ekaterina O., Vernov Sergey Yu
- Журнал: Journal of Cosmology and Astroparticle Physics
- Том: 2022
- Номер: 12
- Год издания: 2022
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Номер статьи: 032
- DOI: 10.1088/1475-7516/2022/12/032
- Аннотация: Superstring/M-theory is the theory of quantum gravity that can provide the UV-completion to viable inflation models. We modify the Starobinsky inflation model by adding the Bel-Robinson tensor Tμνλρ squared term proposed as the leading quantum correction inspired by superstring theory. The (R + 1/6m^2 R^2 - β/8m^6 T^2) model under consideration has two parameters: the inflaton mass m and the string-inspired positive parameter β. We derive the equations of motion in the Friedmann-Lemaitre-Robertson-Walker universe and investigate its solutions. We find the physical bounds on the value of the parameter β by demanding the absence of ghosts and consistency of the derived inflationary observables with the measurements of the cosmic microwave background radiation.
- Добавил в систему: Вернов Сергей Юрьевич