@article {653,
	title = {Exact results for the O(N) model with quenched disorder},
	journal = {J. High Energy Phys.},
	volume = {2018},
	year = {2018},
	pages = {77},
	abstract = {We use scale invariant scattering theory to exactly determine the lines of renormalization group fixed points for <em>O</em>(<em>N</em>)-symmetric models with quenched disorder in two dimensions. Random fixed points are characterized by two disorder parameters: a modulus that vanishes when approaching the pure case, and a phase angle. The critical lines fall into three classes depending on the values of the disorder modulus. Besides the class corresponding to the pure case, a second class has maximal value of the disorder modulus and includes Nishimori-like multicritical points as well as zero temperature fixed points. The third class contains critical lines that interpolate, as <em>N</em> varies, between the first two classes. For positive <em>N</em>, it contains a single line of infrared fixed points spanning the values of <em>N</em> from √2 - 1 to 1. The symmetry sector of the energy density operator is superuniversal (i.e. <em>N</em>-independent) along this line. For <em>N</em> = 2 a line of fixed points exists only in the pure case, but accounts also for the Berezinskii-Kosterlitz-Thouless phase observed in presence of disorder.},
	doi = {10.1007/JHEP04(2018)077},
	url = {https://link.springer.com/article/10.1007/JHEP04(2018)077},
	author = {Gesualdo Delfino and Noel M. Lamsen}
}