Regular black hole remnants and graviatoms with de Sitter interior as heavy dark matter candidates probing inhomogeneity of early universe

TL;DR

This paper explores regular black hole remnants and graviatoms with de Sitter interiors as heavy dark matter candidates, proposing their potential observational signatures and implications for early universe inhomogeneity detection.

Contribution

It introduces the concept of graviatoms with de Sitter interiors as novel heavy dark matter candidates and discusses their unique signatures, including induced proton decay, for experimental detection.

Findings

Graviatoms can induce proton decay with enhanced cross-sections.

These objects could account for a significant portion of dark matter.

Proposed observational signatures include proton decay paths detectable at IceCUBE.

Abstract

We address the question of regular primordial black holes with de Sitter interior, their remnants and gravitational vacuum solitons G-lumps as heavy dark matter candidates providing signatures for inhomogeneity of early universe, which is severely constrained by the condition that the contribution of these objects in the modern density does not exceed the total density of dark matter. Primordial black holes and their remnants seem to be most elusive among dark matter candidates. However, we reveal a nontrivial property of compact objects with de Sitter interior to induce proton decay or decay of neutrons in neutron stars. The point is that they can form graviatoms, binding electrically charged particles. Their observational signatures as dark matter candidates provide also signatures for inhomogeneity of the early universe. In graviatoms, the cross-section of the induced proton decay is strongly enhanced, what provides the possibility of their experimental searches. We predict proton decay paths induced by graviatoms in the matter as an observational signature for heavy dark matter searches at the IceCUBE experiment.