238 citations · 1.8k across the 28 of their papers we have counts for
15 papers · 1 filter
Exact time evolution formulae in the XXZ spin chain with domain wall initial state
Jean-Marie Stéphan
We study the time evolution of the spin-1/2 XXZ chain initialized in a domain wall state, where all spins to the left of the origin are up, all spins to its right are down. The foc…
The boundary density profile of a Coulomb droplet. Freezing at the edge
Gabriel Cardoso, Jean-Marie Stéphan, Alexander G. Abanov
We revisit the problem of computing the boundary density profile of a droplet of two-dimensional one-component plasma (2D OCP) with logarithmic interaction between particles in a c…
Entanglement entropies of inhomogeneous Luttinger liquids
Alvise Bastianello, Jérôme Dubail, Jean-Marie Stéphan
We develop a general framework to compute the scaling of entanglement entropy in inhomogeneous one-dimensional quantum systems belonging to the Luttinger liquid universality class.…
Free fermions at the edge of interacting systems
Jean-Marie Stéphan
We study the edge behavior of inhomogeneous one-dimensional quantum systems, such as Lieb-Liniger models in traps or spin chains in spatially varying magnetic fields. For free syst…
Return probability after a quench from a domain wall initial state in the spin-1/2 XXZ chain
Jean-Marie Stéphan
We study the return probability and its imaginary () time continuation after a quench from a domain wall initial state in the XXZ spin chain, focusing mainly on the region with…
Universal terms in the overlap of the ground state of the spin-1/2 XXZ chain with the Néel state
Michael Brockmann, Jean-Marie Stéphan
We analyze universal terms that appear in the large system size scaling of the overlap between the Néel state and the ground state of the spin-1/2 XXZ chain in the antiferromagneti…
Inhomogeneous field theory inside the arctic circle
Nicolas Allegra, Jérôme Dubail, Jean-Marie Stéphan +1
Motivated by quantum quenches in spin chains, a one-dimensional toy-model of fermionic particles evolving in imaginary-time from a domain-wall initial state is solved. The main int…
Unusual Corrections to Scaling and Convergence of Universal Renyi Properties at Quantum Critical Points
Sharmistha Sahoo, E. Miles Stoudenmire, Jean-Marie Stéphan +3
At a quantum critical point, bipartite entanglement entropies have universal quantities which are subleading to the ubiquitous area law. For Renyi entropies, these terms are known…
Inhomogeneous quenches in a fermionic chain: exact results
Jacopo Viti, Jean-Marie Stéphan, Jérôme Dubail +1
We consider the non-equilibrium physics induced by joining together two tight binding fermionic chains to form a single chain. Before being joined, each chain is in a many-fermion…
Shannon and Rényi mutual information in quantum critical spin chains
Jean-Marie Stéphan
We study the Shannon mutual information in one-dimensional critical spin chains, following a recent conjecture (Phys. Rev. Lett. 111, 017201 (2013)), as well as Rényi generalizatio…
Emptiness formation probability, Toeplitz determinants, and conformal field theory
Jean-Marie Stéphan
We revisit the study of the emptiness formation probability, the probability of forming a sequence of spins with the same ferromagnetic orientation in the ground-state of a…
Logarithmic corrections to the free energy from sharp corners with angle
Jean-Marie Stéphan, Jérôme Dubail
We study subleading corrections to the corner free energy in classical two-dimensional critical systems, focusing on a generic boundary perturbation by the stress-tensor of the und…
Rényi entanglement entropies in quantum dimer models : from criticality to topological order
Jean-Marie Stéphan, Grégoire Misguich, Vincent Pasquier
Thanks to Pfaffian techniques, we study the Rényi entanglement entropies and the entanglement spectrum of large subsystems for two-dimensional Rokhsar-Kivelson wave functions const…
Local quantum quenches in critical one-dimensional systems: entanglement, the Loschmidt echo, and light-cone effects
Jean-Marie Stéphan, Jérôme Dubail
We study a particular type of local quench in a generic quantum critical one-dimensional system, using conformal field theory (CFT) techniques, and providing numerical checks of th…
Geometric entanglement of critical XXZ and Ising chains and Affleck-Ludwig boundary entropies
Jean-Marie Stéphan, Grégoire Misguich, Fabien Alet
We study the geometrical entanglement of the XXZ chain in its critical regime. Recent numerical simulations [Q.-Q. Shi, R. Orús, J. O. Fjærestad and H.-Q Zhou, New J. Phys. {\bf 12…