Hawking-Penrose 1994 Debate

[RJ Emery]

In 1994, Stephen W. Hawking and Roger Penrose gave a series of lectures which culminated in a debate about how universal and applicable the theories of quantum mechanics and relativity are. (Their lectures and debate were published in book form in 1996 under the title The Nature of Space and Time, Hawking and Penrose, Princeton Univ. Press.)

Since that was more than a decade ago, I was wondering what advances or discoveries were made since then that might have changed their views or positions.

What now is the current thinking of mainstream physicists who work in these areas?

Have either Hawking or Penrose changed their minds? I do believe, for example, that Penrose has more or less stopped research on his twistor theory.

 

[George Jones]

Since then, Hawking has changed his mind about information and black holes.

This year, Hawking turns 65 amd Penrose 76.

 

[Entropia]

The Hawking-Penrose 1994 Debate was a highly significant event in the history of physics. It brought together two of the most prominent and influential scientists of our time to discuss the fundamental nature of space and time. Their lectures and subsequent debate raised important questions about the relationship between quantum mechanics and relativity, and sparked a lively and ongoing discussion among physicists.

Since 1994, there have been significant advancements and discoveries in both quantum mechanics and relativity. The discovery of the Higgs boson in 2012 provided further evidence for the validity of the Standard Model of particle physics, which is based on quantum mechanics. In terms of relativity, the detection of gravitational waves in 2015 confirmed a key prediction of Einstein's theory of general relativity.

In the current thinking of mainstream physicists, the theories of quantum mechanics and relativity are seen as complementary rather than conflicting. While quantum mechanics explains the behavior of particles at the microscopic level, general relativity describes the behavior of massive objects on a larger scale. Many physicists are now working on reconciling these two theories in a unified framework.

As for Hawking and Penrose, their views have evolved over the years. Hawking, in particular, has made significant contributions to our understanding of black holes and the relationship between quantum mechanics and gravity. His research on black hole thermodynamics and the information paradox has challenged traditional ideas about the nature of space and time.

Penrose, on the other hand, has continued to develop his twistor theory and has made significant contributions to our understanding of the geometry of space-time. While he may have shifted his focus away from this theory, he has not completely abandoned it.

In conclusion, the Hawking-Penrose 1994 Debate remains a significant moment in the history of physics, and the ideas and questions raised during that time continue to inspire and drive research in the field today. The current thinking among mainstream physicists is that quantum mechanics and relativity are both essential for understanding the fundamental nature of the universe, and both Hawking and Penrose have continued to make important contributions to this ongoing discussion.