19 citations · 102 across the 16 of their papers we have counts for
16 papers
Probing Short-Distance Modifications of Gravity via Spin-Independent and Spin-Dependent Effects in Muonic Atoms
J. E. J. Matias, A. S. Lemos, F. Dahia
High-precision spectroscopy of muonic atoms provides a powerful probe for new short-range interactions predicted by theories beyond the Standard Model (SM). In this work, we derive…
Extra-Dimensional de Broglie-Bohm Quantum Cosmology
F. A. P. Alves-Júnior, A. S. Lemos, F. A. Brito
In this work, we explore the de Broglie-Bohm Quantum Cosmology for a stiff matter, , anisotropic n-dimensional Universe. One begins by considering a Gaussian wave function f…
Hunting for extra dimensions in black hole shadows
A. S. Lemos, J. A. V. Campos, F. A. Brito
Observational data of the Sagittarius A* (Sgr A*) shadow released by the Event Horizon Telescope (EHT) are used to investigate eventual deviations in the black hole shadow radius,…
Constraining tachyonic inflationary β-exponential model with Continuous Spontaneous Localization collapse scheme
F. A. Brito, Julio C. M. Rocha, A. S. Lemos +1
In this work, we consider the dynamics of the self-induced collapse of the tachyon wave function in inflationary scenarios. We analyze the modifications on the power spectrum by co…
Emergence of squeezed coherent states in Kaluza-Klein cosmology
A. S. Lemos, A. S. Pereira, F. A. Brito +1
In this work, we consider a propagating scalar field on Kaluza-Klein-type cosmological background. It is shown that this geometrical description of the Universe resembles - from a…
The alpha particle charge radius, the radion and the proton radius puzzle
F. Dahia, A. S. Lemos
Recent measurements of the Lamb shift of muonic helium-4 ions were used to infer the alpha particle charge radius. The value found is compatible with the radius extracted from the…
Charged Lifshitz black holes from general covariance breaking
D. C. Moreira, A. S. Lemos, F. A. Brito
In this work we use a general covariance breaking method to obtain a class of topological charged black holes whose background geometry asymptotically approaches Lifshitz spacetime…
Squeezed coherent states for a free particle with time-varying mass
A. S. Pereira, A. S. Lemos, F. A. Brito
We obtain the squeezed coherent states (SCS) for a free particle with exponentially time-varying mass. We write these states in terms of the squeeze and displacement parameters on…
Quantum Gravity Constraints on Fine Structure Constant from GUP in Braneworlds
A. S. Lemos, F. A. Brito
The Generalized Uncertainty Principle (GUP) has been discussed in the thick braneworld scenario. By considering Rydberg atoms in this background, we show that the spacetime geometr…
Generalized para-Bose states
A. S. Pereira, A. S. Lemos, F. A. Brito
In this paper, we construct integrals of motion in a para-Bose formulation for a general time-dependent quadratic Hamiltonian, which, in its turn, commutes with the reflection oper…
Submillimeter constraints for non-Newtonian gravity from spectroscopy
A. S. Lemos
In this work, we consider the Yukawa-type and power-type non-Newtonian corrections, which induce amplification of gravitational interaction on submillimeter scales, and analyticall…
Time-dependent coherent squeezed states in a nonunitary approach
A. S. Pereira, A. S. Lemos
In this work, we have applied the integrals of motion method in a nonunitary approach and so obtained the time-dependent displacement and squeezed parameters of the coherent squeez…
Spectroscopic tests for short-range modifications of Newtonian and post-Newtonian potentials
A. S. Lemos, G. C. Luna, E. Maciel +1
There are theoretical frameworks, such as the large extra dimension models, which predict the strengthening of the gravitational field in short distances. Here we obtain new empiri…
Rydberg states of hydrogen-like ions in braneworld
F. Dahia, E. Maciel, A. S. Lemos
It has been argued that precise measurements of optical transition frequencies between Rydberg states of hydrogen-like ions could be used to obtain an improved value of the Rydberg…
Is the proton radius puzzle evidence of extra dimensions?
F. Dahia, A. S. Lemos
The proton charge radius inferred from muonic hydrogen spectroscopy is not compatible with the previous value given by CODATA-2010, which, on its turn, essentially relies on measur…
Constraints on extra dimensions from atomic spectroscopy
F. Dahia, A. S. Lemos
We consider a hydrogen atom confined in a thick brane embedded in a higher-dimensional space. Due to effects of the extra dimensions, the gravitational potential is amplified in di…