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Open Quantum Systems Decoherence Quantum Simulation

Real-time dynamics of Chern-Simons fluctuations near a critical point

arXiv
Authors: Kazuki Ikeda, Dmitri E. Kharzeev, Yuta Kikuchi

Year

2020

Paper ID

18709

Status

Preprint

Abstract Read

~2 min

Abstract Words

95

Citations

N/A

Abstract

The real-time topological susceptibility is studied in (1+1)-dimensional massive Schwinger model with a θ-term. We evaluate the real-time correlation function of electric field that represents the topological Chern-Pontryagin number density in (1+1) dimensions. Near the parity-breaking critical point located at θ=π and fermion mass m to coupling g ratio of m/g approx 0.33, we observe a sharp maximum in the topological susceptibility. We interpret this maximum in terms of the growth of critical fluctuations near the critical point, and draw analogies between the massive Schwinger model, QCD near the critical point, and ferroelectrics near the Curie point.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • The real-time topological susceptibility is studied in (1+1)-dimensional massive Schwinger model with a θ-term.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2012.02926 [2] arXiv https://arxiv.org/abs/2012.02926 [3] Publisher https://arxiv.org/abs/2012.02926

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