Speaker
Márton Kormos
(Budapest University of Technology and Economics; HUN-REN-BME-BCE Quantum Technology Research Group)
Description
We investigate large-scale fluctuations of conserved quantities and their associated currents in the sine-Gordon field theory. Our approach is based on the framework of Generalized Hydrodynamics, which has only recently become fully applicable across all regimes of the model. By combining this with Ballistic Fluctuation Theory, we analyse the distribution of conserved charges and the full counting statistics of currents. We derive analytical results in both the low- and high-temperature limits. Notably, we find that the cumulants of the topological charge distribution exhibit a fractal-like dependence on the coupling constant, mirroring the behaviour observed in the Drude weight of the topological charge.
Authors
Botond Nagy
(Budapest University of Technology and Economics)
Prof.
Gábor Takács
(Department of Theoretical Physics, Budapest Unitersity of Technology and Economics)
Márton Kormos
(Budapest University of Technology and Economics; HUN-REN-BME-BCE Quantum Technology Research Group)
