# Creating spatial flatness by combining string gas cosmology and power law inflation

@article{Kamali2020CreatingSF, title={Creating spatial flatness by combining string gas cosmology and power law inflation}, author={Vahid Kamali and Robert Brandenberger}, journal={arXiv: High Energy Physics - Theory}, year={2020} }

We show that it is possible to combine an early phase of String Gas Cosmology which can explain the origin of the observed structures on cosmological scales with a short later period of power law inflation which creates spatial flatness. The resulting model is consistent with the ``swampland criteria'' and the constraints coming from the {\it Trans-Planckian Censorship Conjecture}. Such a construction is not possible using only canonical slow-roll inflation, but it can emerge in the warm…

## 2 Citations

String cosmology backgrounds from classical string geometry

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- 2021

We introduce a very early universe model based on the thermodynamics of a gas of closed strings in a background which is non-perturbative in $\alpha'$. Upon considering the fully $\alpha'$-corrected…

Stochastic gravitational-wave background in quantum gravity

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Among all cosmological quantum-gravity or quantum-gravity-inspired scenarios, only very few predict a blue-tilted primordial tensor spectrum. We explore five of them and check whether they can…

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