Gravitational crystal inside the black hole

TL;DR

This paper proposes that inside black holes, gravity may undergo a phase transition into a crystal-like state at the Planck scale, offering a new perspective on quantum gravity effects and the black hole information paradox.

Contribution

It introduces the idea that black hole interiors can form a crystalline phase, providing a novel mechanism for quantum effects at macroscopic distances and addressing the information paradox.

Findings

Crystalline phase inside black holes at Planck scale.

Potential resolution to the black-hole information paradox.

Quantum effects pronounced at macroscopic distances.

Abstract

Crystals, as quantum objects typically much larger than their lattice spacing, are a counterexample to a frequent prejudice that quantum effects should not be pronounced at macroscopic distances. We propose that the Einstein theory of gravity only describes a fluid phase and that a phase transition of crystallization can occur under extreme conditions such as those inside the black hole. Such a crystal phase with lattice spacing of the order of the Planck length offers a natural mechanism for pronounced quantum-gravity effects at distances much larger than the Planck length. A resolution of the black-hole information paradox is proposed, according to which all information is stored in a crystal-phase remnant with size and mass much above the Planck scale.