A mechanism for vortex annihilation in two dimensional superfluid turbulence
APA
Lucas, A. (2014). A mechanism for vortex annihilation in two dimensional superfluid turbulence. Perimeter Institute. https://pirsa.org/14050139
MLA
Lucas, Andrew. A mechanism for vortex annihilation in two dimensional superfluid turbulence. Perimeter Institute, May. 22, 2014, https://pirsa.org/14050139
BibTex
@misc{ pirsa_PIRSA:14050139, doi = {10.48660/14050139}, url = {https://pirsa.org/14050139}, author = {Lucas, Andrew}, keywords = {Strong Gravity}, language = {en}, title = {A mechanism for vortex annihilation in two dimensional superfluid turbulence}, publisher = {Perimeter Institute}, year = {2014}, month = {may}, note = {PIRSA:14050139 see, \url{https://pirsa.org}} }
University of Colorado Boulder
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Abstract
Recent numerical simulations [1] have suggested that two dimensional superfluid turbulence is characterized by a direct cascade of energy to small length scales, in contrast to the inverse cascade of normal fluids, where energy is transported to large length scales. This direct cascade is characterized by many vortex-antivortex annihilation events. Recent experimental work [2] on Bose-Einstein condensates appears to demonstrate qualitatively similar physics. I will discuss recent work in progress towards identifying the physical mechanism underlying this direct cascade, using techniques of effective field theory.