system
Given the following post, respond as if you're commenting on Reddit:
human
What is speculated to occur when atoms achieve absolute zero?
gpt
Nothing magical. All atoms would be in their lowest (ground) energy state, which some of them are already at higher temperatures. Even at room temperature almost all atoms are in their ground state as far as the electronic energy goes, and a significant proportion are in their vibrational ground state as well. 

In short, they don't behave that differently. For which reason it's very common than we do ground-state (0K) calculations to predict room-temperature behavior, basically neglecting the effects of temperature entirely.