2 papers
cond-mat.stat-mech2020
Topological effects and conformal invariance in long-range correlated random surfaces
Nina Javerzat, Sebastian Grijalva, Alberto Rosso +1
We consider discrete random fractal surfaces with negative Hurst exponent . A random colouring of the lattice is provided by activating the sites at which the surface height i…
cond-mat.stat-mech2019
Open XXZ chain and boundary modes at zero temperature
Sebastian Grijalva, Jacopo De Nardis, Veronique Terras
We study the open XXZ spin chain in the anti-ferromagnetic regime and for generic longitudinal magnetic fields at the two boundaries. We discuss the ground state via the Bethe ansa…