magnified by positive tidal charges if $b < 1$ and lowered for $b > 1$. However, potential astrophysical relevance of the trapping phenomena is strongly enhanced for negative tidal charges enabling a significant enlargement of the ECS surface radius to values coherent with recent observations.'
author:
- Zdeněk Stuchlík
- Jan Hladík
- |
    \
    Martin Urbanec
date: 'Received: date / Accepted: date'
title: Neutrino trapping in braneworld extremely compact stars
---

Introduction
============

One of the promising approaches to the higher-dimensional gravity theories is represented by the braneworld models, where the observable universe is a 3-brane (domain wall) to which the matter fields are confined, while the gravity field enters the extra spatial dimensions of size that could strongly exceed the Planck length scale [@Ark-Dim-Dva:1998:]. Such models provide an elegant solution to the hierarchy problem of electroweak and quantum gravity scales, as these become of the same order ($\sim \mathrm{TeV}$) due to large extra dimensions and could be well tested on the planned supercollider experiments [@Dim-Lan:2001:]. Gravity can be localized near the brane at low energies even with an infinite size extra dimension with warped spacetime satisfying the 5D Einstein equations containing negative cosmological constant [@Ran-Sun:1999:] and an arbitrary 