238 citations · 1.8k across the 28 of their papers we have counts for
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Universal behavior of a bipartite fidelity at quantum criticality
Jérôme Dubail, Jean-Marie Stéphan
We introduce the (logarithmic) bipartite fidelity of a quantum system as the (logarithm of the) overlap between its ground-state wave function and the ground-state one wo…
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…
Rényi entropy of a line in two-dimensional Ising models
Jean-Marie Stéphan, Grégoire Misguich, Vincent Pasquier
We consider the two-dimensional (2d) Ising model on a infinitely long cylinder and study the probabilities to observe a given spin configuration along a circular section…