Sunday, April 30, 2023

Unraveling the Paradox: Black Holes' Disruption of Quantum States in Experiments

According to recent findings presented by physicists at the American Physical Society's meeting on April 17, conducting a quantum experiment near a black hole can lead to paradoxes, as the black hole's mere presence disrupts all quantum states in its vicinity. This discovery arises from a thought experiment that tests the rules of quantum mechanics and black holes against each other. If a quantum experiment is conducted near a black hole, it could potentially reveal information about the black hole's interior, which contradicts what physics currently permits. However, the team proposes that the way around this paradox is for the black hole to annihilate any quantum states that come close to it.

Black holes have long been recognized for their ability to bend space and time in their proximity, producing spectacular visual effects such as the striking light patterns depicted in this illustration. Recent discoveries indicate that black holes also distort quantum states in their vicinity, further expanding their influence over the fundamental workings of the universe.


This destruction of quantum states may have implications for future theories of quantum gravity, which aim to unite quantum mechanics and general relativity. The team's theoretical physicist, Gautam Satishchandran of Princeton University, explains that the goal is to leverage the properties of these theories to investigate aspects of the fundamental theory of quantum gravity.

The team's experiment involves a thought experiment in which a person, Alice, conducts the double-slit experiment in a lab orbiting a black hole, while another person, Bob, is situated inside the black hole's event horizon. When Bob observes which slit Alice's particle went through, the particle's quantum state collapses, leading to a paradox in which nothing inside a black hole should affect the outside. Despite this paradox, the laws of physics behave similarly inside and outside the event horizon.

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