activity
20242026
most citedBulk viscosity from early-time thermalization of cosmic fluids in light of DESI DR2 data

1 citations · 1 across the 7 of their papers we have counts for

collaborators

8 papers

quant-ph2026

Metric and Dispersive Dynamics of Phase Perturbations in Bohmian Quantum Mechanics

Felipe S. Escórcio, Hermano Velten

By linearizing the hydrodynamic equations associated with the Madelung transformation in the context of Bohmian dynamics, we derive an effective metric for the phase perturbation a…

gr-qc2026

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…

astro-ph.GA2026

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…

astro-ph.CO2025★ 1 cited

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…

gr-qc2025

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…

gr-qc2025

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…

gr-qc2024

Cosmological eras with the neutrino non-relativistic transition in RTB gravity

Jonas Pinheiro da Silva, Hermano Velten

Theories based on the Ricci and the trace of the energy-momentum tensor, or the short name Ricci-trace-based (RTB) theories, represent a gravitational approach based on the Ricci s…

q-bio.PE2024

Extended error threshold mechanism in {\it quasispecies} theory via population dynamics

Hermano Velten, Carlos Felipe Pinheiro, Alcides Castro e Silva

We investigate Eigen's model for the evolution of the genetic code of microorganisms using a novel method based on population dynamics analysis. This model, for a given number of o…