Curvature function renormalisation, topological phase transitions and multicriticality

23 Mar 2020 Faruk Abdulla Priyanka Mohan Sumathi Rao

A recently proposed curvature renormalization group scheme for topological phase transitions defines a generic `curvature function' as a function of the parameters of the theory and shows that topological phase transitions are signalled by the divergence of this function at certain parameters values, called critical points, in analogy with usual phase transitions. A renormalization group procedure was also introduced as a way of flowing away from the critical point towards a fixed point, where an appropriately defined correlation function goes to zero and topological quantum numbers characterising the phase are easy to compute... (read more)

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  • MESOSCALE AND NANOSCALE PHYSICS
  • STATISTICAL MECHANICS