BWhat 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.
Scientific 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.
Evidence
The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. 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.
Contributors
- The named authors in the research record · SCIENCE: These 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.
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