Traversable Wormholes Sourced by Dark Matter in Loop Quantum Cosmology

TL;DR

This paper explores the theoretical possibility of traversable wormholes sourced by dark matter within Loop Quantum Cosmology, analyzing their geometric properties, energy conditions, and observational signatures like shadows.

Contribution

It introduces new wormhole solutions in Loop Quantum Cosmology with dark matter sources, analyzing their regularity, energy conditions, and potential observational signatures.

Findings

Wormhole solutions satisfy geometric criteria and are free of singularities.

Certain scenarios violate classical energy conditions, indicating exotic matter presence.

The wormhole shadow can be distinguished from black holes, matching M87 observations.

Abstract

In this work, we investigate the existence of wormholes within the framework of Loop Quantum Cosmology, using isotropic dark matter as the source. We analyze three distinct density profiles and solve the modified gravity field equations alongside the stress-energy tensor conservation, applying appropriate boundary conditions to obtain traversable wormhole solutions. Each solution is shown to satisfy the geometric criteria for wormholes, and their regularity is verified by computing the Kretschmann scalar to ensure the absence of singularities under determined conditions. Additionally, we examine the stress-energy tensor to identify scenarios in which energy conditions are violated within this model. The wormhole geometry is further explored through embedding diagrams, and the amount of exotic matter required to sustain these structures is computed using the Volume Integral Quantifier. Finally, we study the shadow produced by our wormhole solution, considering one of the dark matter density profiles, and compare it with observations of the M87 galaxy.