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  • 1810.03438

    Rights statement: © 2018 American Physical Society

    Accepted author manuscript, 103 KB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

  • PRD23

    Final published version, 112 KB, PDF document

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Steep eternal inflation and the swampland

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Article number123516
<mark>Journal publication date</mark>18/12/2018
<mark>Journal</mark>Physical Review D – Particles and Fields
Issue number12
Number of pages4
Publication StatusPublished
<mark>Original language</mark>English


We investigate whether eternal inflation is possible when the inflaton originally travels up the scalar potential and inevitably reaches a turnaround point where its classical kinetic energy momentarily vanishes. This behaviour occurs regardless of the steepness of the potential slope. Such steep eternal inflation, if achieved, would satisfy the recent swampland conjecture and allow eternal inflation in the string landscape.

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© 2018 American Physical Society