We report on a systematic approach for the calculation of the negativity in the ground state of
a one-dimensional quantum field theory. The partial transpose ${\rho} _ {A}^{{T} _ {2}} $ of …

We consider the logarithmic negativity of a finite interval embedded in an infinite one
dimensional system at finite temperature. We focus on conformal invariant systems and we …

We study the continuum limit of the entanglement Hamiltonians of a block of consecutive
sites in massless harmonic chains. This block is either in the chain on the infinite line or at …

A bstract We study the entanglement entropies of an interval for the massless compact
boson either on the half line or on a finite segment, when either Dirichlet or Neumann …

We construct a contour function for the entanglement entropies in generic harmonic lattices.
In one spatial dimension, numerical analysis are performed by considering harmonic chains …

We study the dynamics of the statistics of the energy transferred across a point along a
quantum chain which is prepared in the inhomogeneous initial state obtained by joining two …

We study a toy model of a multiverse consisting of canonically quantized universes that
interact with each other on a quantum level based on a field-theoretical formulation of the …

In this Letter it is studied the effects that an interaction scheme among universes can have in
the values of their cosmological constants. In the case of two interacting universes, the value …

By correctly identifying the role of the central extension in the centrally extended Heisenberg
algebra h⁠, we show that it is indeed possible to construct a Hopf algebraic structure on the …

We consider quantum systems consisting of a linear chain of n harmonic oscillators coupled
by a nearest-neighbour interaction of the form (refers to the position of the rth oscillator). In …