Zobrazeno 1 - 10
of 446
pro vyhledávání: '"Nogueira, J. P."'
The homogeneous Bethe-Salpeter equation (BSE) of a (1/2)$^+$ bound system, that has both fermionic and bosonic degrees of freedom, that we call a {\em mock nucleon}, is studied in Minkowski space, in order to analyse the chiral limit in covariant gau
Externí odkaz:
http://arxiv.org/abs/2304.13218
In this work we determine the consequences of the quantum entanglement of a system of two identical particles when a generalized uncertainty principle (GUP) is considered. GUP's are usually associated with the existence of a minimal length. We focus
Externí odkaz:
http://arxiv.org/abs/2301.11966
Autor:
Lopes, L., Andringa, S., Assis, P., Blanco, A., Carolino, N., Cerda, M. A., Clemêncio, F., Conceição, R., Cunha, O., Dobrigkeit, C., Ferreira, M., Loureiro, C., Mendes, L., Nogueira, J. C., Pereira, A., Pimenta, M., Saraiva, J., Sarmento, R., Teixeira, P., Tomé, B.
Over the last two decades, the possibility of using RPCs in outdoors systems has increased considerably. Our group has participated in this effort having installed several systems and continues to work on their optimization, while simultaneously stud
Externí odkaz:
http://arxiv.org/abs/2212.05131
In the present paper we deal with the issue of finding the self-adjoint extensions of a $p^4$-corrected Hamiltonian. The importance of this subject lies on the application of the concepts of quantum mechanics to the minimal-length scale scenario whic
Externí odkaz:
http://arxiv.org/abs/2204.00687
The parton distribution of the pion is obtained for the first time from the solution of a dynamical equation in Minkowski space. The adopted equation is the homogeneous Bethe-Salpeter one with a ladder kernel, described in terms of i) constituent qua
Externí odkaz:
http://arxiv.org/abs/2203.07106
In this work, we consider effects of the dynamical vacuum in quantum cosmology in presence of a minimum length introduced by the GUP (generalized uncertainty principle) related to the modified commutation relation $[\hat{X},\hat{P}] := \frac{i\hbar}{
Externí odkaz:
http://arxiv.org/abs/2012.09158
Publikováno v:
Phys. Rev. D 103, 014002 (2021)
A dynamical model is applied to the study of the pion valence light-front wave function, obtained from the actual solution of the Bethe-Salpeter equation in Minkowski space, resorting to the Nakanishi integral representation. The kernel is simplified
Externí odkaz:
http://arxiv.org/abs/2012.04973
Publikováno v:
Phys. Rev. A 103, 032438 (2021)
In this paper, we present a proof-of-principle of the formation of pure maximally entangled states from the Greenberger-Horne-Zeilinger class, in the experimental context of charged quantum dots. Each qubit must be identified as a pair of quantum dot
Externí odkaz:
http://arxiv.org/abs/2009.04569
Publikováno v:
Phys.Rev. D101 (2020) 096018
The structure of the three-boson bound state in Minkowski space is studied for a model with contact interaction. The Faddeev-Bethe-Salpeter equation is solved both in Minkowski and Euclidean spaces. The results are in fair agreement for comparable qu
Externí odkaz:
http://arxiv.org/abs/2005.07943
Publikováno v:
Phys. Rev. D 100, 016021 (2019)
The ladder Bethe-Salpeter Equation of a bound (1/2)+ system, composed by a fermion and a scalar boson, is solved in Minkowski space, for the first time. The formal tools are the same already successfully adopted for two-scalar and two-fermion systems
Externí odkaz:
http://arxiv.org/abs/1907.03079