C. M. L. de Aragao
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
C. M. L. de Aragao has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Dario Zappalà
INFN, Sezione di Catania
2 shared publications - Joao G. Rosa
Univ Coimbra, Faculdade de Ciências e Tecnologia da Universidade de Coimbra and CFisUC
2 shared publications - Orfeu Bertolami
Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
2 shared publications - Paolo Castorina
INFN
2 shared publications - A. Grillo
Facoltà di Ingegneria DMFCI Università di Catania Viale Andrea Doria 6 95126 Catania Italy
1 shared publication - Maurizio Consoli
Istituto Nazionale di Fisica Nucleare, Sezione di Catania, 95123 Catania, Italy
1 shared publication
Latest Publications
- Open Access
Evidence for an anisotropy of the speed of light
By comparing with the most recent experimental results, we point out the model dependence of the present bounds on the anisotropy of the speed of light. In fact, by replacing the CMB with a class of preferred frames that can better account for the experimental data, one obtains values of the RMS anisotropy parameter (1/2 -beta + delta) that are one order of magnitude larger than the presently quoted ones. The resulting non-zero anisotropy can be understood starting from the observation that the speed of light in the Earth's gravitational field is not the basic parameter c=1 entering Lorentz transformations. In this sense, light can propagate isotropically only in one `preferred' frame.
Open AccessEvidence for an anisotropy of the speed of light
By comparing with the most recent experimental results, we point out the model dependence of the present bounds on the anisotropy of the speed of light. In fact, by replacing the CMB with a class of preferred frames that can better account for the experimental data, one obtains values of the RMS anisotropy parameter (1/2 -beta + delta) that are one order of magnitude larger than the presently quoted ones. The resulting non-zero anisotropy can be understood starting from the observation that the speed of light in the Earth's gravitational field is not the basic parameter c=1 entering Lorentz transformations. In this sense, light can propagate isotropically only in one `preferred' frame.
- Top Cited Papers
- 22 July 2005
- Published by American Physical Society (APS) in Physical Review D
- Vol. 72 (2) , 025010
Noncommutative gravitational quantum well
We study noncommutative geometry at the quantum mechanics level by means of a model where noncommutativity of both configuration and momentum spaces is considered. We analyze how this model affects the problem of the two-dimensional gravitational quantum well and use the latest experimental results for the two lowest energy states of neutrons in the Earth’s gravitational field to establish an upper bound on the fundamental momentum scale introduced by noncommutativity, namely, , a value that can be improved in the future by up to orders of magnitude. We show that the configuration space noncommutativity has, in leading order, no effect on the problem. We also analyze some features introduced by the model, especially a correction to the presently accepted value of Planck’s constant to part in .- 22 July 2005
- Published by American Physical Society (APS) in Physical Review D
- Vol. 72 (2) , 025010
Top Cited PapersNoncommutative gravitational quantum well
We study noncommutative geometry at the quantum mechanics level by means of a model where noncommutativity of both configuration and momentum spaces is considered. We analyze how this model affects the problem of the two-dimensional gravitational quantum well and use the latest experimental results for the two lowest energy states of neutrons in the Earth’s gravitational field to establish an upper bound on the fundamental momentum scale introduced by noncommutativity, namely, , a value that can be improved in the future by up to orders of magnitude. We show that the configuration space noncommutativity has, in leading order, no effect on the problem. We also analyze some features introduced by the model, especially a correction to the presently accepted value of Planck’s constant to part in . - Open Access
Noncommutative Gravitational Quantum Well
We study noncommutative geometry at the Quantum Mechanics level by means of a model where noncommutativity of both configuration and momentum spaces is considered. We analyze how this model affects the problem of the two-dimensional gravitational quantum well and use the latest experimental results for the two lowest energy states of neutrons in the Earth's gravitational field to establish an upper bound on the fundamental momentum scale introduced by noncommutativity, namely $\sqrt{\eta}\lesssim1\ \mathrm{meV/c}$, a value that can be improved in the future by up to 3 orders of magnitude. We show that the configuration space noncommutativity has, in leading order, no effect on the problem. We also analyze some features introduced by the model, specially a correction to the presently accepted value of Planck's constant to 1 part in $10^{24}$.Open AccessNoncommutative Gravitational Quantum Well
We study noncommutative geometry at the Quantum Mechanics level by means of a model where noncommutativity of both configuration and momentum spaces is considered. We analyze how this model affects the problem of the two-dimensional gravitational quantum well and use the latest experimental results for the two lowest energy states of neutrons in the Earth's gravitational field to establish an upper bound on the fundamental momentum scale introduced by noncommutativity, namely $\sqrt{\eta}\lesssim1\ \mathrm{meV/c}$, a value that can be improved in the future by up to 3 orders of magnitude. We show that the configuration space noncommutativity has, in leading order, no effect on the problem. We also analyze some features introduced by the model, specially a correction to the presently accepted value of Planck's constant to 1 part in $10^{24}$.