# The Axidental Universe

@article{Bachlechner2019TheAU, title={The Axidental Universe}, author={Thomas C. Bachlechner and Kate Eckerle and Oliver Janssen and Matthew Kleban}, journal={arXiv: High Energy Physics - Theory}, year={2019} }

Theories with several hundred axion fields have enormous numbers of distinct meta-stable minima. A small fraction of these local minima have vacuum energy compatible with current measurements of dark energy. The potential also contains regions suitable for inflation, and gives rise to a natural type of dark matter. First-order phase transitions from one minimum to the vicinity of another play the role of big bangs and produce many bubbles containing evolving Friedmann-Lemaitre-Robertson-Walker…

## 7 Citations

### Axion landscape cosmology

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

We study the cosmology of complex multi-axion theories. With 𝒪(100) fields and GUT scale energies these theories contain a vast number of vacua, inflationary trajectories and a natural dark matter…

### Revealing the Structure of the Inflationary Landscape through Primordial non-Gaussianity

- Physics
- 2019

In this thesis, we show how the structure of the landscape potential of the primordial Universe may be probed through the primordial density perturbations responsible for the origin of the cosmic…

### Quantum tunneling of ultralight dark matter out of satellite galaxies

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2023

The idea of ultralight scalar (axion) dark matter is theoretically appealing and may resolve some small-scale problems of cold dark matter; so it deserves careful attention. In this work we carefully…

### Slow-roll approximation in quantum cosmology

- Physics
- 2020

In minimally coupled scalar field theories with a potential of the slow-roll type, we give a detailed description of the complex O(4)-symmetric solutions to Einstein’s equations on the four-ball…

### Many-field inflation: universality or prior dependence?

- MathematicsJournal of Cosmology and Astroparticle Physics
- 2020

We investigate the observational signatures of many-field inflation and present analytic expressions for the spectral index as a function of the prior. For a given prior we employ the central limit…

### A systematic approach to Kähler moduli stabilisation

- MathematicsJournal of High Energy Physics
- 2020

Achieving full moduli stabilisation in type IIB string compactifications for generic Calabi-Yau threefolds with hundreds of Kähler moduli is notoriously hard. This is due not just to the very fast…

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