# The Problem of Boltzmann Brains and How Bohmian Mechanics Helps Solve It

## TL;DR

The paper discusses how Bohmian mechanics offers a potential solution to the Boltzmann brain problem by leveraging the 'freezing' of configurations in quantum physics, challenging traditional classical and quantum interpretations.

## Contribution

It introduces how Bohmian mechanics can address the Boltzmann brain problem through the concept of configuration freezing, providing a novel perspective beyond orthodox quantum theory.

## Key findings

- Bohmian mechanics predicts configuration freezing in the universe.
- Freezing prevents the formation of Boltzmann brains in infinite space-time.
- This approach offers a potential resolution to a longstanding cosmological paradox.

## Abstract

Most versions of classical physics imply that if the 4-volume of the entire space-time is infinite or at least extremely large, then random fluctuations in the matter will by coincidence create copies of us in remote places, so called "Boltzmann brains." That is a problem because it leads to the wrong prediction that _we_ should be Boltzmann brains. The question arises, how can any theory avoid making this wrong prediction? In quantum physics, it turns out that the discussion requires a formulation of quantum theory that is more precise than the orthodox interpretation. Using Bohmian mechanics for this purpose, we point out a possible solution to the problem based on the phenomenon of "freezing" of configurations.