77 citations · 398 across the 16 of their papers we have counts for
16 papers
Gravitational quantum switch on a superposition of spherical shells
Natália S. Móller, Bruna Sahdo, Nelson Yokomizo
In the absence of a complete theory of quantum gravity, phenomenological models built upon minimal assumptions have been explored for the analysis of possible quantum effects in gr…
Cosmological states in loop quantum gravity on homogeneous graphs
Bekir Baytas, Nelson Yokomizo
We introduce a class of states characterized by proposed conditions of homogeneity and isotropy in loop quantum gravity and construct concrete examples given by Bell-network states…
Universal terms of the entanglement entropy in a static closed universe
Rodolfo Soldati, L. S. Menicucci, N. Yokomizo
Subdominant contributions to the entanglement entropy of quantum fields include logarithmic corrections to the area law characterized by universal coefficients that are independent…
Quantum switch in the gravity of Earth
Natália S. Móller, Bruna Sahdo, Nelson Yokomizo
We introduce a protocol for a quantum switch in the gravitational field of a spherical mass and determine the time interval required for its realization in the gravity of Earth. On…
Entanglement production in the dynamical Casimir effect at parametric resonance
Ivan Romualdo, Lucas Hackl, Nelson Yokomizo
The particles produced from the vacuum in the dynamical Casimir effect are highly entangled. In order to quantify the correlations generated by the process of vacuum decay induced…
Gluing polyhedra with entanglement in loop quantum gravity
Bekir Baytaş, Eugenio Bianchi, Nelson Yokomizo
In a spin-network basis state, nodes of the graph describe un-entangled quantum regions of space, quantum polyhedra. In this paper we show how entanglement between intertwiner degr…
Linear growth of the entanglement entropy and the Kolmogorov-Sinai rate
Eugenio Bianchi, Lucas Hackl, Nelson Yokomizo
The rate of entropy production in a classical dynamical system is characterized by the Kolmogorov-Sinai entropy rate given by the sum of all positive Lyapunov exp…
Tensor perturbations during inflation in a spatially closed Universe
Béatrice Bonga, Brajesh Gupt, Nelson Yokomizo
In a recent paper [17], we studied the evolution of the background geometry and scalar perturbations in an inflationary, spatially closed Friedmann-Lemaître-Robertson-Walker (FLRW)…
Loop expansion and the bosonic representation of loop quantum gravity
Eugenio Bianchi, Jonathan Guglielmon, Lucas Hackl +1
We introduce a new loop expansion that provides a resolution of the identity in the Hilbert space of loop quantum gravity on a fixed graph. We work in the bosonic representation ob…
Squeezed vacua in loop quantum gravity
Eugenio Bianchi, Jonathan Guglielmon, Lucas Hackl +1
We introduce squeezed vacua in loop quantum gravity, a new overcomplete basis of states that contain prescribable correlations between geometric operators. We study the behavior of…
Entanglement time in the primordial universe
Eugenio Bianchi, Lucas Hackl, Nelson Yokomizo
We investigate the behavior of the entanglement entropy of space in the primordial phase of the universe before the beginning of cosmic inflation. We argue that in this phase the e…
Entanglement entropy of squeezed vacua on a lattice
Eugenio Bianchi, Lucas Hackl, Nelson Yokomizo
We derive a formula for the entanglement entropy of squeezed states on a lattice in terms of the complex structure J. The analysis involves the identification of squeezed states wi…
Dirac fermions in strong electric field and quantum transport in graphene
S. P. Gavrilov, D. M. Gitman, N. Yokomizo
Our previous results on the nonperturbative calculations of the mean current and of the energy-momentum tensor in QED with the T-constant electric field are generalized to arbitrar…
Localizability in de Sitter space
N. Yokomizo, J. C. A. Barata
An analogue of the Newton-Wigner position operator is defined for a massive neutral scalar field in de Sitter space. The one-particle subspace of the theory, consisting of positive…
Multiple classical limits in relativistic and nonrelativistic quantum mechanics
N. Yokomizo, J. C. A. Barata
The existence of a classical limit describing interacting particles in a second-quantized theory of identical particles with bosonic symmetry is proved. This limit exists in additi…
Topological low-temperature limit of Z(2) spin-gauge theory in three dimensions
N. Yokomizo, P. Teotonio-Sobrinho, J. C. A. Barata
We study Z(2) lattice gauge theory on triangulations of a compact 3-manifold. We reformulate the theory algebraically, describing it in terms of the structure constants of a bidime…