4 papers
Exact mutual information for free massless fermions in any dimension
Nicolás Abate, Leandro Martinek
We obtain an exact expression for the Rényi mutual information (RMI) between two spherical regions for a free, massless Dirac field in spacetime dimensions and for a massless R…
Exact Mutual Information Difference: Scalar vs. Maxwell Fields
Nicolás Abate, Horacio Casini, Marina Huerta +1
We compute, for any Rényi index , the exact difference between the mutual Rényi informations of a pair of free massless scalars and that of a Maxwell field in dimensions…
Quantum microstate counting from Brownian motion: from many-body systems to black holes
Enzo Bavaro, Javier M. Magan, Leandro Martinek
We introduce a new way to produce infinite families of bases of a quantum system's Hilbert space, as well as methods to find its dimension. These families are constructed via Brown…
Optimal symmetry operators
Leandro Martinek
We present a constructive method to maximize the expectation value of operators that implement a symmetry on a subsystem, making use of modular tools. More generally, we study the…