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Peer-reviewedCC BYJournal of High Energy Physics

A menagerie of wormholes and cosmologies in the gravitational path integral

  • Panos Betzios
  • Paul Ghiringhelli
  • Ioannis Gialamas
  • Olga Papadoulaki
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Abstract

A bstract We analyse a variety of Euclidean saddles in the gravitational path integral, with asymptotic AdS boundary conditions, in a class of Einstein-Scalar-Maxwell models. These include single boundary solutions, usual and wineglass wormholes, as well as more exotic (quasi)-oscillatory saddles. Our construction shows how an unbound number of oscillations gets tamed, when flat directions of the potential get lifted. We find several interesting phase transitions between these solutions. The Euclidean wormhole backgrounds can be analytically continued to Lorentzian FLRW universes. Some of them contain an early period of inflation. We delineate the conditions under which they can be the dominant saddles in the gravitational path integral and use them to estimate ratios of probabilities for different cosmological outcomes.

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Cite

BibTeXRIS
BibTeX
@article{betzios2026menagerie,
  title = {{A menagerie of wormholes and cosmologies in the gravitational path integral}},
  author = {Panos Betzios and Paul Ghiringhelli and Ioannis Gialamas and Olga Papadoulaki},
  journal = {Journal of High Energy Physics},
  year = {2026},
  month = jun,
  doi = {10.1007/jhep06(2026)171},
  url = {https://hal.science/hal-05771496v1},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - A menagerie of wormholes and cosmologies in the gravitational path integral
AU  - Panos Betzios
AU  - Paul Ghiringhelli
AU  - Ioannis Gialamas
AU  - Olga Papadoulaki
PY  - 2026
DA  - 2026/06/16
JO  - Journal of High Energy Physics
DO  - 10.1007/jhep06(2026)171
UR  - https://hal.science/hal-05771496v1
AB  - A bstract We analyse a variety of Euclidean saddles in the gravitational path integral, with asymptotic AdS boundary conditions, in a class of Einstein-Scalar-Maxwell models. These include single boundary solutions, usual and wineglass wormholes, as well as more exotic (quasi)-oscillatory saddles. Our construction shows how an unbound number of oscillations gets tamed, when flat directions of the potential get lifted. We find several interesting phase transitions between these solutions. The Euclidean wormhole backgrounds can be analytically continued to Lorentzian FLRW universes. Some of them contain an early period of inflation. We delineate the conditions under which they can be the dominant saddles in the gravitational path integral and use them to estimate ratios of probabilities for different cosmological outcomes.
SN  - 1126-6708
SN  - 1029-8479
ER  -