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Generation efficiencies for propagating modes in a supersolid
Physical Review B
Using Andreev and Lifshitz's supersolid hydrodynamics, we obtain the propagating longitudinal modes at non-zero applied pressure P_a (necessary for solid 4He), and their generation efficiencies by heaters and transducers. For small P_a, a solid develops an internal pressure P ∼ P_a^2. This theory has stress contributions both from the lattice and an internal pressure P. Because both types of stress are included, the normal mode analysis differs from previous works. Not surprisingly, transducersdoi:10.1103/physrevb.82.094519 fatcat:rsz5dg5rsncavgj4zgez54cv4i