3 papers
cond-mat.str-el2023
Thermodynamics and fractal Drude weights in the sine-Gordon model
Botond C. Nagy, Márton Kormos, Gábor Takács
The sine-Gordon model is a paradigmatic quantum field theory that provides the low-energy effective description of many gapped 1D systems. Despite this fact, its complete thermodyn…
cond-mat.stat-mech2023
Weak vs. strong breaking of integrability in interacting scalar quantum field theories
Bence Fitos, Gábor Takács
The recently proposed classification of integrability-breaking perturbations according to their strength is studied in the context of quantum field theories. Using random matrix me…
cond-mat.stat-mech2023
Quantum Integrability vs Experiments: Correlation Functions and Dynamical Structure Factors
M. Lencsés, G. Mussardo, G. Takács
Integrable Quantum Field Theories can be solved exactly using bootstrap techniques based on their elastic and factorisable S-matrix. While knowledge of the scattering amplitudes re…