TL;DR
This paper investigates the parametric excitation of rotons in superfluid helium using oscillating electric fields, revealing a narrow resonance at the roton minimum frequency that aligns with experimental microwave absorption data.
Contribution
It demonstrates the resonance behavior of rotons under electric field excitation and provides theoretical results consistent with experimental observations.
Findings
Resonance occurs at the roton minimum frequency.
Resonance width matches experimental microwave absorption data.
Supports the theory of roton excitation via electric fields.
Abstract
Parametric excitation of rotons by oscillating electric field exhibits a narrow resonance at the roton minimum frequency. The resonance width is in good agreement with experimental results on the microwave absorption in superfluid helium.
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