369 citations · 633 across the 2 of their papers we have counts for
9 papers
Topological Order and Conformal Quantum Critical Points
Eddy Ardonne, Paul Fendley, Eduardo Fradkin
We discuss a certain class of two-dimensional quantum systems which exhibit conventional order and topological order, as well as two-dimensional quantum critical points separating…
Competing density-wave orders in a one-dimensional hard-boson model
Paul Fendley, K. Sengupta, Subir Sachdev
We describe the zero-temperature phase diagram of a model of bosons, occupying sites of a linear chain, which obey a hard-exclusion constraint: any two nearest-neighbor sites may h…
Phase transitions in one dimension and less
Paul Fendley, Oleg Tchernyshyov
Phase transitions can occur in one-dimensional classical statistical mechanics at non-zero temperature when the number of components N of the spin is infinite. We show how to solve…
Taking N to zero with S matrices
Paul Fendley
Interesting physical results can be obtained from sigma models by taking the number of fields N to zero. I discuss how one can make sense of this limit by using exact S matrix tech…
Critical points in two-dimensional replica sigma models
Paul Fendley
I survey the kinds of critical behavior believed to be exhibited in two-dimensional disordered systems. I review the different replica sigma models used to describe the low-energy…
Airy functions in the thermodynamic Bethe ansatz
Paul Fendley
Thermodynamic Bethe ansatz equations are coupled non-linear integral equations which appear frequently when solving integrable models. Those associated with models with N=2 supersy…