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2011

The generalized fermion-bag approach

Chandrasekharan, Shailesh, Li, Anyi

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We present a new approach to some four-fermion lattice field theories which we call the generalized fermion bag approach.

The basic idea is to identify unpaired fermionic degrees of freedom that cause sign problems and collect them in a bag.
Paired fermions usually act like bosons and do not lead to sign problems.
A resummation of all unpaired fermion degrees of freedom inside the bag is sufficient to solve the fermion sign problem in a variety of interesting cases.

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Built on

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Then

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