39 citations · 190 across the 16 of their papers we have counts for
7 papers · 1 filter
Geometric expansion of fluctuations and average shadows
Clément Berthière, Benoit Estienne, Jean-Marie Stéphan +1
Fluctuations of observables provide unique insights into the nature of physical systems, and their study stands as a cornerstone of both theoretical and experimental science. Gener…
Separability and entanglement of resonating valence-bond states
Gilles Parez, Clément Berthiere, William Witczak-Krempa
We investigate separability and entanglement of Rokhsar-Kivelson (RK) states and resonating valence-bond (RVB) states. These states play a prominent role in condensed matter physic…
Full-counting statistics of corner charge fluctuations
Clément Berthiere, Benoit Estienne, Jean-Marie Stéphan +1
Outcomes of measurements are characterized by an infinite family of generalized uncertainties, or cumulants, which provide information beyond the mean and variance of the observabl…
Entanglement of skeletal regions
Clément Berthiere, William Witczak-Krempa
The entanglement entropy (EE) encodes key properties of quantum many-body systems. It is usually calculated for subregions of finite volume (or area in 2d). In this work, we study…
Entanglement and separability in continuum Rokhsar-Kivelson states
Christian Boudreault, Clement Berthiere, William Witczak-Krempa
We study a vast family of continuum Rokhsar-Kivelson (RK) states, which have their groundstate encoded by a local quantum field theory. These describe certain quantum magnets, and…
Relating bulk to boundary entanglement
Clément Berthiere, William Witczak-Krempa
Quantum many-body systems have a rich structure in the presence of boundaries. We study the groundstates of conformal field theories (CFTs) and Lifshitz field theories in the prese…
Boundary-corner entanglement for free bosons
Clement Berthiere
In quantum field theories defined on a spacetime with boundaries, the entanglement entropy exhibits subleading, boundary-induced corrections to the ubiquitous area law. At critical…