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Computational capacity of the universe
1d'Arbeloff Laboratory for Information Systems and Technology, MIT Department of Mechanical Engineering, MIT 3-160, Cambridge, Massachusetts 02139, USA. slloyd@mit.edu
Physical Review Letters
|June 13, 2002
Summary
The Universe, as a physical system, can perform 10^120 operations on 10^90 bits of information. This calculation considers the fundamental laws of physics governing information processing in all systems.
Area of Science:
- Cosmology
- Physics
- Information Theory
Background:
- Physical systems inherently process information.
- The laws of physics dictate the limits of information registration (bits) and operations (ops).
Purpose of the Study:
- To calculate the total information capacity (bits) of the Universe.
- To determine the total number of elementary logic operations (ops) the Universe has performed.
Main Methods:
- Applying physical laws to the Universe as a complete physical system.
- Quantifying information capacity and operational limits based on cosmological parameters.
Main Results:
- The Universe can register approximately 10^90 bits of information.
- The Universe has performed or can perform approximately 10^120 elementary logic operations.
- Including gravitational degrees of freedom increases the information capacity to 10^120 bits.
Conclusions:
- The study quantifies the information processing limits of the Universe.
- These findings provide a physical basis for understanding the Universe's computational capacity.