Quantum field simulator for dynamics in curved spacetime
- URL: http://arxiv.org/abs/2202.10399v2
- Date: Tue, 22 Feb 2022 13:29:44 GMT
- Title: Quantum field simulator for dynamics in curved spacetime
- Authors: Celia Viermann, Marius Sparn, Nikolas Liebster, Maurus Hans, Elinor
Kath, \'Alvaro Parra-L\'opez, Mireia Tolosa-Sime\'on, Natalia
S\'anchez-Kuntz, Tobias Haas, Helmut Strobel, Stefan Floerchinger, and Markus
K. Oberthaler
- Abstract summary: We show a quantum field simulator in a two-dimensional Bose-Einstein condensate with a trap and adjustable interaction strength.
We explicitly show the realisation of spacetimes with positive and negative spatial curvature by wave packet propagation.
We find quantitative agreement with new analytical predictions for different curvatures in time and space.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The observed large-scale structure in our Universe is seen as a result of
quantum fluctuations amplified by spacetime evolution. This, and related
problems in cosmology, asks for an understanding of the quantum fields of the
standard model and dark matter in curved spacetime. Even the reduced problem of
a scalar quantum field in an explicitly time-dependent spacetime metric is a
theoretical challenge and thus a quantum field simulator can lead to new
insights. Here, we demonstrate such a quantum field simulator in a
two-dimensional Bose-Einstein condensate with a configurable trap and
adjustable interaction strength to implement this model system. We explicitly
show the realisation of spacetimes with positive and negative spatial curvature
by wave packet propagation and confirm particle pair production in controlled
power-law expansion of space. We find quantitative agreement with new
analytical predictions for different curvatures in time and space. This
benchmarks and thereby establishes a quantum field simulator of a new class. In
the future, straightforward upgrades offer the possibility to enter new, so far
unexplored, regimes that give further insight into relativistic quantum field
dynamics.
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