An anisotropic phase-only Josephson array with a single BKT transition yields apparent double-Tc in linear R-T curves under anisotropic dissipation and finite-size crossover, but critical scaling criteria remain consistent with one transition.
It is convenient to introduce the twist per bond δµ ≡Φ µ/L,(15) so that Υµ(L,T)= 1 L2 ∂2F ∂δ2µ δµ=0 .(16) For the Hamiltonian in Eq
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Apparent double-$T_c$ from a single BKT transition in anisotropic phase-only models
An anisotropic phase-only Josephson array with a single BKT transition yields apparent double-Tc in linear R-T curves under anisotropic dissipation and finite-size crossover, but critical scaling criteria remain consistent with one transition.