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        "description": "The frequency-independent intercept is derived by extrapolation and relies on the oscillator model, background subtraction, shear-modulus and sample assumptions. It is not a direct observation of superflow or conclusive proof of a supersolid phase; the authors state that additional tests are required. Their results concern bulk helium samples, distinct from the 2012 confined-Vycor null result.",
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      "statement": "# Multiple-frequency tests of anomalous rotation in bulk solid helium\n\nEyal, Mi, Talanov and Reppy measured bulk solid helium with double- and triple-mode torsional oscillators, separating a dominant frequency-dependent period shift from a smaller extrapolated frequency-independent contribution in some samples. They considered the latter a possible supersolid signature and proposed further discriminating tests.\n\n## Scientific scope\n\nThe frequency-independent intercept is derived by extrapolation and relies on the oscillator model, background subtraction, shear-modulus and sample assumptions. It is not a direct observation of superflow or conclusive proof of a supersolid phase; the authors state that additional tests are required. Their results concern bulk helium samples, distinct from the 2012 confined-Vycor null result.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nA. Eyal; X. Mi; A. V. Talanov; J. D. Reppy\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Multiple Mode Torsional Oscillator Studies and Evidence for Supersolidity in Bulk ⁴He](https://arxiv.org/pdf/1511.03401v1)\n",
      "summary": "Eyal, Mi, Talanov and Reppy measured bulk solid helium with double- and triple-mode torsional oscillators, separating a dominant frequency-dependent period shift from a smaller extrapolated frequency-independent contribution in some samples. They considered the latter a possible supersolid signature and proposed further discriminating tests.",
      "title": "Multiple-frequency tests of anomalous rotation in bulk solid helium"
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    "what_changed": "Eyal, Mi, Talanov and Reppy measured bulk solid helium with double- and triple-mode torsional oscillators, separating a dominant frequency-dependent period shift from a smaller extrapolated frequency-independent contribution in some samples. They considered the latter a possible supersolid signature and proposed further discriminating tests.",
    "scope": "Eyal, Mi, Talanov and Reppy measured bulk solid helium with double- and triple-mode torsional oscillators, separating a dominant frequency-dependent period shift from a smaller extrapolated frequency-independent contribution in some samples. They considered the latter a possible supersolid signature and proposed further discriminating tests. The frequency-independent intercept is derived by extrapolation and relies on the oscillator model, background subtraction, shear-modulus and sample assumptions. It is not a direct observation of superflow or conclusive proof of a supersolid phase; the authors state that additional tests are required. Their results concern bulk helium samples, distinct from the 2012 confined-Vycor null result.",
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