541 citations · 2.5k across the 53 of their papers we have counts for
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cond-mat2001
Spin Coherent-State Path Integrals and the Instanton Calculus
Anupam Garg, Evgueny Kochetov, Kee-Su Park +1
We use an instanton approximation to the continuous-time spin coherent-state path integral to obtain the tunnel splitting of classically degenerate ground states. We show that prov…
cond-mat2001★ 90 cited
Wave Equation for Sound in Fluids with Vorticity
Santiago Esteban Perez Bergliaffa, Katrina Hibberd, Michael Stone +1
We use Clebsch potentials and an action principle to derive a closed system of gauge invariant equations for sound superposed on a general background flow. Our system reduces to th…