5 papers
Perturbative aspects of analogue FLRW spacetime Jellium models
Matheus E. Pereira, Hermano Velten, Francisco B. Lustosa +1
We study electro-acoustic perturbative modes in homogeneous, isotropic and expanding -- dubbed as Friedmann-Lemaitre-Robertson-Walker (FLRW) -- Jellium models, thereby mimicking de…
Bulk viscosity from early-time thermalization of cosmic fluids in light of DESI DR2 data
Hermano Velten, William Iania
If nonrelativistic dark matter and radiation are allowed to interact, reaching an approximate thermal equilibrium, this interaction induces a bulk viscous pressure changing the eff…
Galactic core-tail structure in BEC dark matter with Kapitza potential
Itauany do Nascimento Barroso, Hermano Velten
Recently, the experimental realization of a Kapitza potential in a Bose-Einstein Condensate (BEC) has been reported for the first time in literature, motivating further theoretical…
A note on Gravitational radiation in generalized Brans-Dicke theory: compact binary systems
Diego S. Jesus, Hermano Velten, Júnior D. Toniato
This note revisits and corrects a previous analysis on gravitational radiation in compact binary systems within the framework of Brans-Dicke-f(R) theories-models featuring both mas…
Anisotropic quantum polytropes
Hermano Velten, Felipe S. Escórcio, Nadson J. S. Trindade
The structure of astrophysical objects is usually modeled under the assumption of hydrostatic equilibrium. However, actual configurations may deviate from perfect spherical or isot…