تقرير
On the superstring-inspired quantum correction to the Starobinsky model of inflation
| العنوان: | On the superstring-inspired quantum correction to the Starobinsky model of inflation |
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| المؤلفون: | Ketov, Sergei V., Pozdeeva, Ekaterina O., Vernov, Sergey Yu. |
| سنة النشر: | 2022 |
| المجموعة: | Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Theory |
| الوصف: | 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 $T^{\mu\nu\lambda\rho}$ squared term proposed as the leading quantum correction inspired by superstring theory. The $(R+\frac{1}{6m^2}R^2 -\frac{\beta}{8m^6}T^2)$ model under consideration has two parameters: the inflaton mass $m$ and the string-inspired positive parameter $\beta$. 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 $\beta$ by demanding the absence of ghosts and consistency of the derived inflationary observables with the measurements of the cosmic microwave background radiation. Comment: 24 pages, 5 figures, LaTeX; the version to appear in JCAP |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/1475-7516/2022/12/032 |
| URL الوصول: | http://arxiv.org/abs/2211.01546 |
| رقم الأكسشن: | edsarx.2211.01546 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1088/1475-7516/2022/12/032 |
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