Quantum computation of an interacting fermionic model
Quantum computation of an interacting fermionic model
复制标题
相互作用费米子模型的量子计算
DOI:
10.1088/2058-9565/ab8f63
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发表时间:
2020
影响因子:
6.7
通讯作者:
Siopsis, George
中科院分区:
文献类型:
--
作者:
Mishra, Chinmay;Thompson, Shane;Pooser, Raphael;Siopsis, George
Relativistic fermionic field theories constitute the fundamental description of all observable matter. The simplest of the models provide a useful, classically verifiable benchmark for noisy intermediate scale quantum computers. We calculate the energy levels of a model of Dirac fermions with four-fermion interactions, on a lattice in 1+ 1 space-time dimensions. We employ a hybrid classical-quantum computation scheme to obtain the mass gap in this model for three spatial sites. With error mitigation the results are in good agreement with exact classical calculations. Our calculations extend to the vicinity of the massless limit where chiral symmetry emerges, however relative errors for quantum computations in this regime are significant. We compare our results with an analytical calculation using perturbation theory.
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