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4 papers · 1 filter
Exchange constants and spin dynamics in Mn12-acetate
A. Honecker, N. Fukushima, B. Normand +2
We have obtained new inelastic neutron scattering (INS) data for the molecular magnet Mn12-acetate which exhibit at least six magnetic peaks in the energy range 5-35 meV. These are…
Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
Matthias Troyer, Uwe-Jens Wiese
Quantum Monte Carlo simulations, while being efficient for bosons, suffer from the "negative sign problem'' when applied to fermions - causing an exponential increase of the comput…
Exchange Interactions and High-Energy Spin States in Mn_12-acetate
G. Chaboussant, A. Sieber, S. Ochsenbein +5
We perform inelastic neutron scattering measurements on the molecular nanomagnet Mn_12-acetate to measure the excitation spectrum up to 45meV (500K). We isolate magnetic excitation…
HadAtom03
J. Gasser, A. Rusetsky, J. Schacher
These are the proceedings of the workshop "HadAtom03," held at the European Centre for Theoretical Nuclear Physics and Related Studies (ECT*), Trento (Italy), October 13 - 17, 2003…