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<p>We propose a novel mechanism in which the mass-squared term of a scalar potential periodically switches sign due to an external oscillatory wave. As a result of this “potential oscillation,” the vacuum transitions between symmetry-broken and symmetry-restored phases. This repeated toggling leads to a time-varying vacuum state that, through the scalar field’s couplings to other sectors, gives rise to interesting phenomenological consequences. As a concrete illustration, we demonstrate how these oscillations can open a new avenue for probing the cosmic neutrino background.</p>

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Oscillating scalar potential and its implications for cosmic neutrino background searches

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月28日

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  • Yechan Kim,
  • Hye-Sung Lee

摘要

We propose a novel mechanism in which the mass-squared term of a scalar potential periodically switches sign due to an external oscillatory wave. As a result of this “potential oscillation,” the vacuum transitions between symmetry-broken and symmetry-restored phases. This repeated toggling leads to a time-varying vacuum state that, through the scalar field’s couplings to other sectors, gives rise to interesting phenomenological consequences. As a concrete illustration, we demonstrate how these oscillations can open a new avenue for probing the cosmic neutrino background.