3 papers
cond-mat.quant-gas2024
Interaction-induced dissipative quantum phase transition in a head-to-tail atomic Josephson junction
Koichiro Furutani, Luca Salasnich
We propose a dissipative phase transition in a head-to-tail Bose Josephson junction. The quantum phase transition has the same origin as the one in a resistively shunted Josephson…
cond-mat.supr-con2024
Amplitude, phase, and topological fluctuations shaping the complex phase diagram of two-dimensional superconductors
Koichiro Furutani, Giovanni Midei, Andrea Perali +1
We study the amplitude and phase fluctuations of the Ginzburg-Landau quasiorder parameter for superconductors in two spatial dimensions. Starting from the mean-field critical tempe…
cond-mat.supr-con2024
Predictive power of the Berezinskii-Kosterlitz-Thouless theory based on Renormalization Group throughout the BCS-BEC crossover in 2D superconductors
Giovanni Midei, Koichiro Furutani, Luca Salasnich +1
Recent experiments on 2D superconductors allow the characterization of the critical temperature and of the phase diagram across the BCS-BEC crossover as a function of density. We o…