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Quantum phases of two-dimensional <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="double-struck">Z</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> gauge theory coupled to single-component fermion matter
Gauge theories are ubiquitous in contemporary physics. Here, the authors investigate the many-body phase diagram of a model where dynamical discrete Ising gauge fields mediate interactions between single-component fermionic matter. Such a system remained intractable for years, due to the lack of sign-problem-free Monte-Carlo simulations. With the help of a …