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Uwe-Jens Wiese
Researcher at University of Bern
Publications - 262
Citations - 9050
Uwe-Jens Wiese is an academic researcher from University of Bern. The author has contributed to research in topics: Quantum chromodynamics & Lattice gauge theory. The author has an hindex of 43, co-authored 253 publications receiving 7638 citations. Previous affiliations of Uwe-Jens Wiese include ETH Zurich & United States Department of Energy.
Papers
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Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
Matthias Troyer,Uwe-Jens Wiese +1 more
TL;DR: It is proved that the sign problem is nondeterministic polynomial (NP) hard, implying that a generic solution of the sign problems would also solve all problems in the complexity class NP inPolynomial time.
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Monopole condensation and color confinement
TL;DR: In this paper, it was shown that monopole condensation is responsible for confinement in U(1) lattice gauge theory and that this mechanism persists in SU(2) nonabelian gauge theories.
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Quantum link models: A discrete approach to gauge theories☆
TL;DR: In this article, the elements of the link matrices are represented by noncommuting operators acting in a Hilbert space, and the configuration space of quantum link models is discrete and hence their numerical treatment should be simpler than that of ordinary lattice gauge theories with a continuous configuration space.
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Atomic Quantum Simulation of Dynamical Gauge Fields coupled to Fermionic Matter: From String Breaking to Evolution after a Quench
Debasish Banerjee,Marcello Dalmonte,Marcello Dalmonte,Markus Müller,Enrique Rico,Enrique Rico,Pascal Stebler,Uwe-Jens Wiese,Peter Zoller,Peter Zoller,Peter Zoller +10 more
TL;DR: Using a Fermi-Bose mixture of ultracold atoms in an optical lattice, a quantum simulator is constructed for a U(1) gauge theory coupled to fermionic matter to investigate string breaking as well as the real-time evolution after a quench in gauge theories, which are inaccessible to classical simulation methods.
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Atomic Quantum Simulation of U ( N ) and SU ( N ) Non-Abelian Lattice Gauge Theories
Debasish Banerjee,Michael Bögli,Marcello Dalmonte,Enrique Rico,Enrique Rico,Pascal Stebler,Uwe-Jens Wiese,Peter Zoller,Peter Zoller +8 more
TL;DR: Using ultracold alkaline-earth atoms in optical lattices, a quantum simulator is constructed for U(N) and SU( N) lattice gauge theories with fermionic matter based on quantum link models that share qualitative features with QCD.