Negative group velocity and Kelvin-like wake pattern
E. Kolomeisky, J. Colen, and J.P. Straley
Published in Physical Review B, 2022
We derived and demonstrated how excitations with negative group velocity may exhibit a reversed Kelvin wake pattern. This novel pattern could be observed, for example, in superfluid 4He.
Collaboration with Eugene Kolomeisky (UVA) and Joseph Straley (Kentucky).