Speaker
Urs Wenger
(Institute for Theoretical Physics, University of Bern)
Description
We review the construction of twisted supersymmetry and Q-exact
actions on the lattice in low dimensions and discuss the formulation
of such supersymmetric lattice models as an interacting gas of bosonic
and fermionic loops. We comment on the relevance of the fermion sign
problem for the vanishing of the Witten index and show how this sign
problem can be solved by employing the Prokof'ev-Svistunov worm
algorithm together with topological boundary conditions.
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Primary author
Urs Wenger
(Institute for Theoretical Physics, University of Bern)
Co-author
David Baumgartner
(Institute for Theoretical Physics, University of Bern)
