6 citations · 6 across the 5 of their papers we have counts for
6 papers
Pseudo entropy from entanglement entropy
Abhigyan Saha, Piotr Sułkowski, Tadashi Takayanagi
Pseudo entropy extends entanglement entropy from a single quantum state to a pair of nonorthogonal states and is generally complex. Taking advantage of Cauchy-Riemann equations, Kr…
Generalised Entanglement Entropies from Unit-Invariant Singular Value Decomposition
Pawel Caputa, Abhigyan Saha, Piotr Sułkowski
We introduce generalisations of von Neumann entanglement entropy that are invariant with respect to certain scale transformations. These constructions are based on the Unit-Invaria…
Quivers and BPS states in 3d and 4d
Piotr Kucharski, Pietro Longhi, Dmitry Noshchenko +2
We propose a symmetrization relation between BPS quivers encoding 4d theories and symmetric quivers associated to 3d theories. We analyse in detail…
Wild wall-crossing and symmetric quivers in 4d and 3d field theories
Daniel Bryan, Piotr Sułkowski
We reformulate Kontsevich-Soibelman wall-crossing formulae for 4d class theories and corresponding BPS quivers, including those of wild type, as ident…
Musings on SVD and pseudo entanglement entropies
Pawel Caputa, Souradeep Purkayastha, Abhigyan Saha +1
Pseudo-entropy and SVD entropy are generalizations of the entanglement entropy that involve post-selection. In this work we analyze their properties as measures on the spaces of qu…
Unlinking symmetric quivers
Piotr Kucharski, Hélder Larraguível, Dmitry Noshchenko +1
We analyse the structure of equivalence classes of symmetric quivers whose generating series are equal. We consider such classes constructed using the basic operation of unlinking,…