201 citations · 1.5k across the 32 of their papers we have counts for
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cond-mat.other2014★ 1 cited
Numerical optimization using flow equations
Matthias Punk
We develop a method for multidimensional optimisation using flow equations. This method is based on homotopy continuation in combination with a maximum entropy approach. Extrema of…
cond-mat.other2008★ 201 cited
Relaxation of antiferromagnetic order in spin-1/2 chains following a quantum quench
Peter Barmettler, Matthias Punk, Vladimir Gritsev +2
We study the unitary time evolution of antiferromagnetic order in anisotropic Heisenberg chains that are initially prepared in a pure quantum state far from equilibrium. Our analys…
cond-mat.other2007★ 128 cited
Theory of RF-spectroscopy of strongly interacting Fermions
M. Punk, W. Zwerger
We show that strong pairing correlations in Fermi gases lead to the appearance of a gap-like structure in the RF-spectrum, both in the balanced superfluid and in the normal phase a…