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Traversable wormhole dynamics on a quantum processor.

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  • 1Center for the Fundamental Laws of Nature, Harvard University, Cambridge, MA, USA.

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This summary is machine-generated.

Researchers experimentally realized traversable wormhole dynamics using a sparsified Sachdev-Ye-Kitaev (SYK) model on a quantum processor. This work probes quantum gravity and the ER=EPR relation, advancing the study of holography in the lab.

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Area of Science:

  • Quantum Gravity
  • Holography
  • Quantum Information

Background:

  • The holographic principle suggests spacetime can be described by a lower-dimensional boundary, with the anti-de Sitter (AdS)/conformal field theory correspondence as a key example.
  • The Sachdev-Ye-Kitaev (SYK) model offers a realization of holography with features suggesting a gravitational dual in AdS₂.
  • The ER=EPR conjecture relates entanglement to spacetime geometry, with traversable wormholes as a proposed mechanism.

Purpose of the Study:

  • To experimentally investigate the ER=EPR relation by probing traversable wormhole dynamics within the SYK model.
  • To construct and realize a simplified (sparsified) SYK model on a quantum circuit that mimics gravitational phenomena.
  • To explore the potential of quantum simulations for studying fundamental aspects of quantum gravity.

Main Methods:

  • Utilized machine learning techniques to create a sparsified SYK model.
  • Implemented the sparsified SYK model on a nine-qubit quantum circuit using 164 two-qubit gates.
  • Observed traversable wormhole dynamics, including perfect size winding, negative energy shockwave effects, Shapiro time delay, and causal signal propagation.

Main Results:

  • Successfully simulated traversable wormhole dynamics in an experimentally realized sparsified SYK model.
  • The sparsified model preserved key quantum gravity and wormhole physics, despite its approximate nature.
  • Demonstrated phenomena consistent with a two-dimensional gravity dual, including scrambling and thermalization dynamics.

Conclusions:

  • The experiment represents a significant step towards laboratory studies of quantum gravity using quantum simulations.
  • The findings support the ER=EPR conjecture and the holographic principle in the context of the SYK model.
  • Future work requires hardware improvements and theoretical advancements for higher-dimensional duals and other SYK-like models.