88 citations · 278 across the 24 of their papers we have counts for
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math-ph2008★ 19 cited
Integration of Grassmann variables over invariant functions on flat superspaces
Mario Kieburg, Heiner Kohler, Thomas Guhr
We study integration over functions on superspaces. These functions are invariant under a transformation which maps the whole superspace onto the part of the superspace which only…
cond-mat.mes-hall2008★ 11 cited
Quantum frustration of dissipation by a spin bath
D. D. Bhaktavatsala Rao, Heiner Kohler, Fernando Sols
We investigate the evolution of a central spin coupled to a spin bath without internal dynamics. We compare the cases where the bath couples to one or two components of the spin. I…
math-ph2008★ 1 cited
Exact diagonalisation of 1-d interacting spinless Fermions
Heiner Kohler
We acquire a method of constructing an infinite set of exact eigenfunctions of 1--d interacting spinless Fermionic systems. Creation and annihilation operators for the interacting…