Seminars IFIC

How can quantum tunnelling induce a cosmological bounce?

by Dr. Silvia Pla (King's College London)

4-4-4426 - Seminari Física Teòrica (Campus Burjassot)

4-4-4426 - Seminari Física Teòrica

Campus Burjassot


We allow a scalar field on a flat FLRW background metric to tunnel between two degenerate minima. The resulting true vacuum state violates the Null Energy Condition and the corresponding homogeneous fluid can induce a cosmological bounce when coupled to the Friedmann Equations. The mechanism presented here requires no exotic matter or modified gravity, it is purely generated by quantum fluctuations and is valid for a generic double well potential.

Organized by

Adrian del Rio

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