超固体是超流体吗
Is the supersolid superfluid
摘要：
本文分析了量子固体超流性理论与非经典转动转动惯量（NCRM）的关系。基于一个附加的守恒定律的存在，提出了一个超固体理论。结果表明，附加熵或质量通量依赖于准粒子色散关系，在有效质量近似下为零。这意味着在低温下，当色散关系的抛物线部分占主导地位时，超固体的性质应该较少表达。
英文摘要：
An analysis of previous theories of superfluidity of quantum solids is presented in relation to the nonclassical rotational moment of inertia (NCRM) found first in Kim and Chan experiments. A theory of supersolidity is proposed based on the presence of an additional conservation law. It is shown that the additional entropy or mass fluxes depend on the quasiparticle dispersion relation and vanish in the effective mass approximation. This implies that at low temperatures when the parabolic part of the dispersion relation predominates the supersolid properties should be less expressed.
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