摘要: We review on a recently proposed quantum exception to the second law
of thermodynamics. We emphase that helium-4 superflows, like any other
forms of flows, shall carry entropy or heat in a thermal environment.
Following that, one can use a heterogeneous
helium-4 superflow loop to realize entropy-decreasing processes.
We also mention that the heat content of a superflow has an unusual
dependence on flow velocity, which is an important factor contributing
to the entropy-decreasing processes.