Cosmology Intelligent Design Physics

Sabine Hossenfelder: Does the universe have higher dimensions?

Hossenfelder: If one adds 7 dimensions of space to our normal three dimensions, then one can describe all of the fundamental forces of nature geometrically. And that sounds like a really promising idea for a unified theory of physics. Indeed, in the early 1980s, the string theorist Edward Witten thought it was intriguing that seven additional dimensions of space is also the maximum for supergravity. However, that numerical coincidence turned out to not lead anywhere. This geometric construction of fundamental forces which is called Kaluza-Klein theory, suffers from several problems that no one has managed to solved.

Cosmology Intelligent Design Multiverse Physics

At Quanta: Are we looking at the end of physics?

Ah yes, the problem of dead-endedness that Sabine Hossenfelder often writes about. As does Columbia mathematician Peter Woit, on the subject of string theory. But surely much of the nonsense around string theory and the multiverse is in part due to a practical failure—the inability to find even a single particle of dark matter or similar evidence for dark energy.

Extraterrestrial life Intelligent Design

Physicists: Life forms could flourish in the interior of stars

This would seem to be string theory’s contribution to biology: At a time when we haven’t yet located fossil bacteria on Mars (of which there is at least a plausible hope), we are asked to accept that there might be formations within stars that we would not identify as life but really are. String theory is then about as fruitful in biology as it is in cosmology.

Cosmology Intelligent Design Physics

Has a way been found to test string theory? Rob Sheldon responds

Sheldon: “This article explains precisely why thousands of theoretical physicists have not made any progress in 40 years. One hopelessly ad hoc and unsupported theory (inflation) conflicts with another hopelessly unphysical theory (string theory) and then others purport to resolve the difficulty by resorting to highly questionable phenomena (gravity waves).

Cosmology Intelligent Design Multiverse Physics

If quantum mechanics were a researcher, she’d be fired

And have to leave academic science. Factually correct answers do not matter now if they are not politically correct. In a review of Adam Becker’s What Is Real? The Unfinished Quest for the Meaning of Quantum Physics (Basic Books, 2018), mathematician and physicist Sheldon Lee Glashow tells us No one can doubt that quantum mechanics is Read More…

Cosmology Intelligent Design Physics

Cosmologist: String theory is incompatible with dark energy

Rob Sheldon mentioned a story going the rounds earlier today, about whether dark energy was “even allowed.” Here’s the story, from ScienceDaily: In string theory, a paradigm shift could be imminent. In June, a team of string theorists from Harvard and Caltech published a conjecture which sounded revolutionary: String theory is said to be fundamentally Read More…

Intelligent Design

Black holes do not behave as string theorists say they should

Sabine Hossenfelder, author of Lost in Math: How Beauty Leads Physics Astray, explains, Three weeks ago, Steinhauer’s group reported results from a new experiment in which they have now measured the temperature of the fluid black hole: Observation of thermal Hawking radiation at the Hawking temperature in an analogue black hole Juan Ramón Muñoz de Nova, Katrine Read More…