Can the new Neutrino Telescopes reveal the Gravitational Properties of Antimatter?

TL;DR

This paper proposes that neutrino telescopes like Ice Cube could test whether antimatter experiences gravitational repulsion, by detecting antineutrinos emitted from black holes if such repulsion exists.

Contribution

It introduces a novel method to test antimatter gravity using neutrino observations from black holes, linking quantum vacuum effects to astrophysical signals.

Findings

Antineutrinos from supermassive black holes could be detectable.

Black holes might act as sources of antineutrinos if antimatter repulsion exists.

Potential for neutrino telescopes to test fundamental physics of antimatter gravity.

Abstract

We argue that the hypothesis of the gravitational repulsion between matter and antimatter can be tested at the Ice Cube, a neutrino telescope, recently constructed at the South Pole. If there is such a gravitational repulsion, the gravitational field, deep inside the horizon of a black hole, might create neutrino-antineutrino pairs from the quantum vacuum. While neutrinos must stay confined inside the horizon, the antineutrinos should be violently ejected. Hence, a black hole (made from matter) should behave as a point-like source of antineutrinos. Our simplified calculations suggest, that the antineutrinos emitted by supermassive black holes in the centre of the Milky Way and Andromeda Galaxy, could be detected by the new generation of neutrino telescopes.