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Dilaton-induced open quantum dynamics.

Christian Käding1, Mario Pitschmann1, Caroline Voith1

  • 1Technische Universität Wien, Atominstitut, Stadionallee 2, 1020 Vienna, Austria.

The European Physical Journal. C, Particles and Fields
|September 4, 2023
PubMed
Summary
This summary is machine-generated.

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Fock state probability changes in open quantum systems.

The European physical journal. C, Particles and fields·2026
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Quantum-enhanced screened dark energy detection.

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The environment dependent dilaton in the laboratory and the solar system.

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Specifying the Unitary Evolution of a Qudit for a General Nonstationary Hamiltonian via the Generalized Gell-Mann Representation.

Entropy (Basel, Switzerland)·2020

This study explores the environment dependent dilaton, a model for dark energy or dark matter. Researchers found a frequency shift in scalar probes, offering a way to test and constrain dilaton models in experiments.

Area of Science:

  • Cosmology
  • Quantum Field Theory
  • Particle Physics

Background:

  • Scalar fields with screening mechanisms are key in modern cosmology for explaining dark energy and dark matter.
  • The environment dependent dilaton, utilizing the Polyakov-Damour mechanism, remains one of the least constrained models.
  • Understanding the quantum dynamics of such fields is crucial for testing cosmological models.

Purpose of the Study:

  • To investigate the open quantum dynamics of a scalar probe interacting with a dilaton environment.
  • To extract observable consequences of these interactions, specifically frequency shifts in the probe's evolution.
  • To assess the potential of experimental setups to constrain dilaton parameter space.

Main Methods:

  • Utilizing advanced path integral techniques to compute reduced density matrices.

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  • Modeling the probe as a real scalar field interacting with a dilaton environment.
  • Analyzing the leading order correction to the probe's unitary evolution.

    • Main Results:

    • A calculable correction to the probe's unitary evolution was identified.
    • This correction manifests as a frequency shift in the probe's dynamics.
    • The predicted frequency shifts are dependent on the dilaton's parameter space.

    Conclusions:

    • The study provides a theoretical framework for probing dilaton models via quantum dynamics.
    • Comparing frequency shifts in distinct experimental setups can significantly constrain dilaton parameter space.
    • This approach offers a novel method for testing fundamental physics beyond the Standard Model.