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Edge Physics of the Quantum Spin Hall Insulator from a Quantum Dot Excited by Optical Absorption
Romain Vasseur, Joel E. Moore
The gapless edge modes of the Quantum Spin Hall insulator form a helical liquid in which the direction of motion along the edge is determined by the spin orientation of the electro…
Operator content of the critical Potts model in d dimensions and logarithmic correlations
Romain Vasseur, Jesper Lykke Jacobsen
Using the symmetric group symmetry of the -state Potts model, we classify the (scalar) operator content of its underlying field theory in arbitrary dimension. In addition…
Universal entanglement crossover of coupled quantum wires
Romain Vasseur, Jesper Lykke Jacobsen, Hubert Saleur
We consider the entanglement between two one-dimensional quantum wires (Luttinger Liquids) coupled by tunneling through a quantum impurity. The physics of the system involves a cro…
Entanglement in quantum impurity problems is non perturbative
Hubert Saleur, Peter Schmitteckert, Romain Vasseur
We study the entanglement entropy of a region of length 2L with the remainder of an infinite one dimensional gapless quantum system in the case where the region is centered on a qu…
Crossover physics in the non-equilibrium dynamics of quenched quantum impurity systems
Romain Vasseur, Kien Trinh, Stephan Haas +1
A general framework is proposed to tackle analytically local quantum quenches in integrable impurity systems, combining a mapping onto a boundary problem with the form factor appro…
Logarithmic Conformal Field Theory: a Lattice Approach
A. M. Gainutdinov, J. L. Jacobsen, N. Read +2
Logarithmic Conformal Field Theories (LCFT) play a key role, for instance, in the description of critical geometrical problems (percolation, self avoiding walks, etc.), or of criti…