Exact bosonization for an interacting Fermi gas in arbitrary dimensions

Details Exact bosonization for an interacting Fermi gas in arbitrary dimensions Exact bosonization for an interacting Fermi gas in arbitrary dimensions

2009-07-19

arxiv.org/abs/0907.3243v2

Phys. Rev. Lett. 103,186403 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

Basic equations are derived more carefully and in a simpler way

Scientific paper

We present an exact mapping of models of interacting fermions onto boson models. The bosons correspond to collective excitations in the initial fermionic models. This bosonization is applicable in any dimension and for any interaction between fermions. We show schematically how the mapping can be used for Monte Carlo calculations and argue that it should be free from the sign problem. Introducing superfields we derive a field theory that may serve as a new way of analytical study.

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