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Universal scaling of the sigma field and net-protons from Langevin dynamics of model A

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arxiv 1811.09466 v2 pith:M3SGOMXX submitted 2018-11-23 nucl-th

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keywords net-protonsuniversalfieldfunctionssigmaapproximatecriticalcumulants
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abstract

In this paper, we investigate the Kibble-Zurek scaling of the sigma field and net-protons within the framework of Langevin dynamics of model A. After determining the characteristic scales $\tau_{kz},l_{kz}$ and $\theta_{kz}$ and properly rescaling the traditional cumulants, we construct universal functions for the sigma field and approximate universal functions for net-protons in the critical regime, which are insensitive to the relaxation time and the chosen evolving trajectory. Besides, the oscillating behavior for the higher order cumulants of net-protons near the critical point is also drastically suppressed, which converge into approximate universal curves with these constructed Kibble-Zurek functions.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Cumulant dynamics in finite-memory diffusion

    hep-th 2026-06 unverdicted novelty 6.0 of 10

    Finite current relaxation introduces memory effects that suppress, shift, and reshape non-monotonic cumulant behavior relative to instantaneous equilibrium and Fickian diffusion, most visibly in higher-order cumulants.

  2. Universal non-equilibrium scaling of cumulants across a critical point

    hep-ph 2024-11 conditional novelty 6.0 of 10

    The paper extracts universal non-equilibrium scaling functions for the order parameter and its cumulants up to fourth order in a Z2 scalar field theory with Model A dynamics in two and three dimensions.

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