| 2010-06-23
The boomerang of life reunites Hawking and Laflamme at IQC
At first glance, a wooden boomerang might seem like a peculiar gift to give the world’s most famous scientist.
But Stephen Hawking immediately understood the significance of the gift he received this week from his former doctoral student, IQC Director Raymond Laflamme.
A couple of decades have passed since Laflamme proved to Hawking his PhD supervisor at the University of Cambridge that time behaves more like an arrow than a boomerang in a contracting universe.
But Hawking’s visit to IQC this week demonstrated that the “arrow of time” can sometimes bring longtime friends and colleagues full-circle.
In the 1980s, when Hawking was writing his best-seller “A Brief History of Time,” Laflamme’s job was to mathematically demonstrate his mentor’s theory about what happens to time in a contracting universe.
Trouble was, the math just didn’t add up. Laflamme instead proved that Hawking’s theory that time reverses direction could not be true.
Hawking conceded his student's calculations were sound, and personalized Laflamme’s copy of “A Brief History of Time” with the inscription: “To Raymond, who showed me that the arrow of time is not a boomerang. Thank you for all your help. Stephen.”
Laflamme gave his former mentor the grand tour of IQC’s labs, introducing him to the faculty, students, and staff of the institute. “These are the people that allow great science to happen,” Laflamme said.
During a small reception, Laflamme presented Hawking with the boomerang, which is engraved with an optimistic message for the future: “Come back soon!”
from the Institute For Quantum Computing
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