103 citations · 434 across the 16 of their papers we have counts for
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physics.class-ph2017★ 20 cited
Restrictions on wave equations for passive media
Sverre Holm, Martin Blomhoff Holm
Most derivations of acoustic wave equations involve ensuring that causality is satisfied. Here we explore the consequences of also requiring that the medium should be passive. This…
physics.class-ph2015★ 9 cited
Four ways to justify temporal memory operators in the lossy wave equation
Sverre Holm
Attenuation of ultrasound often follows near power laws which cannot be modeled with conventional viscous or relaxation wave equations. The same is often the case for shear wave pr…
physics.class-ph2013★ 67 cited
Comparison of fractional wave equations for power law attenuation in ultrasound and elastography
Sverre Holm, Sven Peter Näsholm
A set of wave equations with fractional loss operators in time and space are analyzed. It is shown that the fractional Szabo equation, the power law wave equation, and the fraction…