Critical behaviour of finite-temperature U(1) lattice gauge model
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文摘
With the variational-cumulant expansion (VCE), the expectation 
L
of the Polyakov line of the finite-temperature U(1) lattice gauge model in (3 + 1)-dimensions (Nτ = 1) is expanded to the 4th order. Because the variational parameter is determined by the accumulation point scheme, the expansion rapidly converges and accurate critical behaviour and the critical exponent β are easily obtained.
L of the Polyakov line of the finite-temperature U(1) lattice gauge model in (3 + 1)-dimensions (Nτ = 1) is expanded to the 4th order. Because the variational parameter is determined by the accumulation point scheme, the expansion rapidly converges and accurate critical behaviour and the critical exponent β are easily obtained.