3 papers
gr-qc2026
On the quantum nature of strong gravity
Felipe Sobrero, Luca Abrahão, Thiago Guerreiro
Belenchia et al. [Phys. Rev. D 98, 126009 (2018)] have analyzed a gedankenexperiment where two observers, Alice and Bob, attempt to communicate via superluminal signals using a sup…
gr-qc2025
Scalar-tensor theories in the Lyra geometry: Invariance under local transformations of length units and the Jordan-Einstein frame conundrum
E. C. Valadão, Felipe Sobrero, Santiago Esteban Perez Bergliaffa
The Lyra geometry provides an interesting approach to develop purely geometrical scalar-tensor theories. Here we present a theory on Lyra manifolds which contains generalizations o…
cond-mat.dis-nn2025
Hydrodynamic fields in fluctuating environment: a model for isochoric heat capacity of simple liquids
I. P. de Freitas, F. Sobrero, A. M. S. Macedo +1
Using functional methods, we investigate the sound quanta arising from quantized hydrodynamic fields in simple liquids at low temperatures, under the influence of high-energy proce…