Erne, S. (2022, September 20). Curved light cones and information propagation in analog curved space time [Conference Presentation]. QSimFP Annual Workshop, Institute of Physics, London, United Kingdom of Great Britain and Northern Ireland (the).
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
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Date (published):
20-Sep-2022
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Event name:
QSimFP Annual Workshop
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Event date:
20-Sep-2022 - 21-Sep-2022
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Event place:
Institute of Physics, London, United Kingdom of Great Britain and Northern Ireland (the)
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Keywords:
cold atoms; Quantum Field Theory; many-body systems
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Abstract:
I will present results on the signal propagation in a quantum field simulator of the Klein-Gordon model realized by two strongly coupled parallel one-dimensional quasi-condensates. By measuring local phononic fields after a quench, we observe the propagation of correlations along sharp light-cone fronts. If the local atomic density is inhomogeneous, these propagation fronts are curved. For sharp edges, the propagation fronts are reflected at the system's boundaries. By extracting the space-dependent variation of the front velocity from the data, we find agreement with theoretical predictions based on curved geodesics of an inhomogeneous metric. This work extends the range of quantum simulations of non-equilibrium field dynamics in general spacetime metrics.
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Project title:
Analog Quantum Simulators: ESQ Discovery Schmiedmayer Huber (Österr. Akademie der Wissenschaften) Marie Sklodowska-Curie Cofunding of the fellow ship programme of the ESQ (Erwin Schrödinger Quantum Science Programme at the ÖAW: 801110 — ESQ (Österr. Akademie der Wissenschaften)
