92 citations · 1.3k across the 98 of their papers we have counts for
9 papers · 1 filter
Systematization of Basic Divergent Integrals in Perturbation Theory and Renormalization Group Functions
L. C. T. Brito, H. G. Fargnoli, A. P. Baêta Scarpelli +2
We show that to n loop order the divergent content of a Feynman amplitude is spanned by a set of basic (logarithmically divergent) integrals which need not be evaluated. Only the c…
Multipartite entanglement control via Quantum Zeno Effect
J. G. Oliveira, R. Rossi, M. C. Nemes
We develop a protocol based on 2M pairwise interacting qubits, which through Quantum Zeno Effect controls the entanglement distribution of the system. We also show that if the coup…
Control of state and state entanglement with a single auxiliary subsystem
R. Rossi, A. R. Bosco de Magalhães, J. G. Peixoto de Faria +1
We present a strategy to control the evolution of a quantum system. The novel aspect of this protocol is the use of a \emph{single auxiliary subsystem}. Two applications are given,…
On the Casimir energy for a massive quantum scalar field and the Cosmological constant
G. Gazzola, M. C. Nemes, W. F. Wreszinski
We present a rigorous, regularization independent local quantum field theoretic treatment of the Casimir effect for a quantum scalar field of mass which yields closed form…
Exciton BCS or BEC state in a semiconductor bilayer system?
E. H. Martins Ferreira, Tathiana Moreira, M. C. Nemes
We calculate the off-diagonal long range order (ODLRO) terms of the exciton--exciton correlation function of a semiconductor bilayer system with Coulomb interaction and a transvers…
Protecting, Enhancing and Reviving Entanglement
J. G. Oliveira, R. Rossi, M. C. Nemes
We propose a strategies not only to protect but also to enhance and revive the entanglement in a double Jaynes-Cummings model. We show that such surprising features arises when Zen…
Indirect evidence for the Gouy phase for matter waves
I. G. da Paz, M. C. Nemes, C. H. Monken +2
We show that the well known geometric phase, the Gouy phase in optics can be defined for matter waves in vacuum as well. In particular we show that the underlying physics for the "…
Gauge invariance and the CPT and Lorentz violating induced Chern-Simons-like term in extended QED
A. P. Baeta Scarpelli, Marcos Sampaio, M. C. Nemes +1
The radiative induction of the CPT and Lorentz violating Chern-Simons (CS) term is reassessed. The massless and massive models are studied. Special attention is given to the preser…
Implicit regularization beyond one loop order: gauge field theories
E. W. Dias, A. P. Baeta Scarpelli, L. C. T. Brito +2
We extend a constrained version of Implicit Regularization (CIR) beyond one loop order for gauge field theories. In this framework, the ultraviolet content of the model is displaye…