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New Methods for Testing Lorentz Invariance with Atomic Systems.

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  • 1Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel.

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This study proposes a new atomic system method to detect violations of local Lorentz invariance (LLI). Experiments using dynamic decoupling in atomic clocks show promising results for LLI tests.

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Area of Science:

  • Atomic Physics
  • Fundamental Symmetries
  • Quantum Metrology

Background:

  • Local Lorentz invariance (LLI) is a cornerstone of modern physics, but experimental tests are crucial to probe potential new physics.
  • Atomic systems offer high precision for testing fundamental symmetries due to their controllable quantum properties.

Purpose of the Study:

  • To propose a broadly applicable experimental scheme for searching for violations of local Lorentz invariance (LLI) using atomic systems.
  • To identify highly charged ions as sensitive candidates for LLI tests.

Main Methods:

  • The proposed scheme utilizes dynamic decoupling techniques, implementable in current atomic clock experiments.
  • The method is applicable to both single ions and arrays of neutral atoms, including systems without optical transitions.
  • A proof-of-principle experiment was conducted using a two-ion crystal of ^{88}Sr^{+} ions.

Main Results:

  • The experiment successfully measured the expected signal for the proposed LLI violation search.
  • A systematic study identified highly charged ions as particularly sensitive candidates for LLI violation.

Conclusions:

  • The dynamic decoupling scheme provides a versatile and sensitive method for probing LLI with atomic systems.
  • This research paves the way for enhanced searches for new physics beyond the Standard Model using atomic experiments.