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Quantum variational approach to lattice gauge theory at nonzero density

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arxiv 2104.10669 v2 pith:UFWP5MU7 submitted 2021-04-21 hep-lat hep-phquant-ph

Arata Yamamoto This is my paper · ORCID
classification hep-lathep-phquant-ph
keywords latticequantumdensitygaugenonzerotheorysimulationvariational
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The simulation of dense fermionic matters is a long-standing problem in lattice gauge theory. One hopeful solution would be the use of quantum computers. In this paper, digital quantum simulation is designed for lattice gauge theory at nonzero density. The quantum variational algorithm is adopted to obtain the ground state at nonzero density. A benchmark test is performed in the lattice Schwinger model.

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  1. Critical behavior of the Schwinger model via gauge-invariant VUMPS

    hep-lat 2024-12 conditional novelty 6.0 of 10

    The gauge-invariant VUMPS algorithm determines the continuum critical mass of the Schwinger model as (m/g)c = 0.333556(5) and produces data collapse consistent with Ising critical exponents.

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