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- W2885303178 abstract "A bstract We consider circuit complexity in certain interacting scalar quantum field theories, mainly focusing on the ϕ 4 theory. We work out the circuit complexity for evolving from a nearly Gaussian unentangled reference state to the entangled ground state of the theory. Our approach uses Nielsen’s geometric method, which translates into working out the geodesic equation arising from a certain cost functional. We present a general method, making use of integral transforms, to do the required lattice sums analytically and give explicit expressions for the d = 2 , 3 cases. Our method enables a study of circuit complexity in the epsilon expansion for the Wilson-Fisher fixed point. We find that with increasing dimensionality the circuit depth increases in the presence of the ϕ 4 interaction eventually causing the perturbative calculation to breakdown. We discuss how circuit complexity relates with the renormalization group." @default.
- W2885303178 created "2018-08-22" @default.
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- W2885303178 date "2018-10-01" @default.
- W2885303178 modified "2023-10-16" @default.
- W2885303178 title "Circuit complexity in interacting QFTs and RG flows" @default.
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- W2885303178 doi "https://doi.org/10.1007/jhep10(2018)140" @default.
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