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cond-mat.quant-gas2017★ 19 cited
Quantum caustics and the hierarchy of light cones in quenched spin chains
W. Kirkby, J. Mumford, D. H. J. O'Dell
We show that the light cone-like structures that form in spin chains after a quench are quantum caustics. Their natural description is in terms of catastrophe theory and this impli…
cond-mat.quant-gas2016★ 11 cited
Emergence of singularities from decoherence: Quantum catastrophes
Aaron Z. Goldberg, Asma Al-Qasimi, J. Mumford +1
We use a master equation to study the dynamics of two coupled macroscopic quantum systems (e.g.\ a Josephson junction made of two Bose-Einstein condensates or two spin states of an…