Related Experiment Video
Updated: Aug 6, 2026

07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Almost certain escape from black holes in final state projection models
1MIT Mechanical Engineering, Cambridge, Massachusetts 02139, USA. slloyd@mit.edu
Physical Review Letters
|April 12, 2006
Summary
Quantum information can escape black holes via a teleportation-like process. This study confirms information escape consistency, with minimal loss of about half a bit, regardless of the amount of data.
Area of Science:
- Quantum Gravity
- Black Hole Physics
- Information Theory
Background:
- Black hole final state models propose quantum information can escape.
- These models often depend on the controversial final-state projection process.
Purpose of the Study:
- To examine the self-consistency of the final-state projection hypothesis.
- To investigate black hole information escape for diverse final states and interactions.
Main Methods:
- Analysis of the final-state projection hypothesis.
- Investigation of generic interactions between matter and Hawking radiation.
Main Results:
- Quantum information escapes black holes with a fidelity of approximately (8/3pi)^2.
- On average, only half a bit of quantum information is lost.
- Information loss is independent of the total number of bits escaping.
Conclusions:
- The final-state projection hypothesis is self-consistent for black hole information escape.
- A significant portion of quantum information is preserved during black hole evaporation.
- This finding has implications for the black hole information paradox.
Related Concept Videos
Escape Velocity
The escape velocity of an object is defined as the minimum initial velocity that it requires to escape the surface of another object to which it is gravitationally bound and never to return. For example, what would be the minimum velocity at which a satellite should be launched from the Earth's surface such that it just escapes the Earth's gravitational field?
To calculate the escape velocity, it is assumed that no energy is lost to any frictional forces. In practice, a satellite launched from...
To calculate the escape velocity, it is assumed that no energy is lost to any frictional forces. In practice, a satellite launched from...
Schwarzschild Radius and Event Horizon
No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape velocity with the...
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape velocity with the...
Detection of Black Holes
Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Escape Velocities of Gases
To escape the Earth's gravity, an object near the top of the atmosphere at an altitude of 100 km must travel away from Earth at 11.1 km/s. This speed is called the escape velocity. The temperature at which gas molecules attain the rms speed, which is equal to the escape velocity, can be estimated by using the equation for the average kinetic energy of the gas molecules. According to the kinetic theory of gas, the average kinetic energy of the gas molecules is proportional to its temperature.
Reduced Mass Coordinates: Isolated Two-body Problem
In classical mechanics, the two-body problem is one of the fundamental problems describing the motion of two interacting bodies under gravity or any other central force. When considering the motion of two bodies, one of the most important concepts is the reduced mass coordinates, a quantity that allows the two-body problem to be solved like a single-body problem. In these circumstances, it is assumed that a single body with reduced mass revolves around another body fixed in a position with an...
Conservation of Mass in Finite Cotrol Volume
The principle of conservation of mass is a fundamental law in fluid mechanics and is applied using the continuity equation. We apply the concept to a finite control volume to derive the continuity equation.
A system is defined as a collection of unchanging contents, and the conservation of mass states that a system's mass is constant.
A system is defined as a collection of unchanging contents, and the conservation of mass states that a system's mass is constant.

