Scientists have created a simulation of an entire family of universes with curvature using ultracold quantum gases. Einstein's Theory of Relativity states that space and time are intertwined. In our Universe, the curvature of spacetime is relatively small and unchanging. However, researchers from H
Curved spacetime is a concept in the theory of general relativity, proposed by Albert Einstein, which describes how gravity affects the shape of the universe. It suggests that the presence of matter or energy in the universe causes the fabric of spacetime to curve and bend.
The researchers used ultracold quantum gases to simulate a range of curved universes to explore various cosmological scenarios. They then compared these simulations with predictions from a quantum field theoretical model. The research findings were published in the journalto the present is the subject of current research that can only be based on the observation of our single Universe. The expansion and curvature of space are essential to cosmological models.
Professor Oberthaler explains that the Bose-Einstein condensate is a perfect background against which the smallest excitations, i.e. changes in the energy state of the atoms, become visible. The form of the atomic cloud determines the dimensionality and the properties of spacetime on which these excitations ride like waves. In our Universe, there are three dimensions of space as well as a fourth: time.
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