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An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...
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Magnetically Induced Rotating Rayleigh-Taylor Instability
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Generation of Entanglement from Mechanical Rotation.

Marko Toroš1, Marion Cromb1, Mauro Paternostro2

  • 1School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.

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|January 6, 2023
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Summary
This summary is machine-generated.

Researchers propose an experiment using photons in rotating interferometers to study quantum mechanics in curved spacetime. This accessible method could reveal how spacetime influences entanglement generation.

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Area of Science:

  • Quantum physics
  • General relativity
  • Quantum gravity

Background:

  • Understanding the interplay between quantum mechanics and gravity is crucial for phenomena like Hawking radiation and early Universe evolution.
  • Current experimental limitations hinder the study of quantum mechanics in curved spacetimes.

Purpose of the Study:

  • To propose a novel experimental scheme for probing quantum mechanics in curved spacetime.
  • To investigate the generation of entanglement in a superposition of different spacetimes.

Main Methods:

  • Utilizing a photon prepared in a path superposition state across two Sagnac interferometers with differing diameters.
  • These interferometers simulate a superposition of two distinct curved spacetimes due to rotation.

Main Results:

  • Prediction of genuine entanglement generation even at low rotation frequencies.
  • Demonstration that these effects are observable even with Earth's rotation.

Conclusions:

  • The proposed experimental setup offers an accessible platform for studying quantum mechanics in curved spacetimes.
  • This research could illuminate the role of spacetime geometry in entanglement generation.