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Physics

Sabine Hossenfelder: There is a crisis in physics and it may spread to other sciences

Many science writers probably like the current state of affairs because nonsense about the multiverse and space aliens is easy to write. Artists might like it because it is easy to illustrate. Only if you cared about physics would you want to spoil the party. Read More ›

Hossenfelder, did you know that, for some, the search for dark matter is an act of faith?

At Nautilus: “My sense,” I say to Christopher, “is that the search for dark matter has produced an elaborate, delicate edifice of presuppositions, and a network of worship sites, also known as laboratories, all dedicated to the search for an invisible universal entity which refuses to reveal itself. It seems to resemble what we call religion rather more than what we call science.” Read More ›

Hossenfelder: Could the problem with dark matter come down to using wrong equations?

Sabine Hossenfelder: Given how much brain-power physicists have spent on trying to figure out what dark matter and dark energy is, I think it would be a good idea to definitely settle the question whether it is anything at all. At the very least, I would sleep better. Read More ›

Sabine Hossenfelder on the future of particle physics

Hossenfelder: The standard model works just fine with that number and it fits the data. But a small number like this, without explanation, is ugly and particle physicists didn’t want to believe nature could be that ugly. Read More ›

Rob Sheldon: Why process philosophy won’t rescue naturalism

"Let me repeat. Physics doesn't change. And even when discussing the changes (like an oscillation), the physics of change doesn't change. Somebody is making a serious category error when the physics of change becomes the change of physics." Read More ›

Are the “redundant” particles of the universe evidence of fine-tuning?

Rob Sheldon: Despite McMaster U. thinking this odd, and believing (hoping?) for a failure of the Standard Model, I see this as a necessary means of storing the information in the hot Big Bang, and demonstrating the ultimate fine-tuning of the cosmos. Read More ›

Does the electron “know” of an impending collision?

Researcher: The electron not only receives the expected momentum, but additionally one third of the photon momentum that actually should have gone to the atom nucleus. The sail, (electron), of the boat, (nucleus), therefore "knows" of the impending accident, (collision from the photon), before the cords tear and steals a bit of the boat's (nucleus's) momentum. Read More ›

Physics envy is a terrible thing, especially in economists

John Rapley: That’s something that ‘physics envy’ can’t capture – that the social nature of human beings makes any laws of behaviour tentative and contextual. In fact, the very term ‘social science’ is probably best seen as an oxymoron. Read More ›

Sabine Hossenfelder: Why some scientists think the universe is a hologram

Her view: “Personally I think that the motivations for the holographic principle are not particularly strong and in any case we’ll not be able to test this hypothesis in the coming centuries. ” And in our next post, experimental physicist Rob Sheldon replies. Read More ›

Sean Carroll: Physicists don’t even want to understand quantum mechanics

Carroll wants a multiverse out of any new findings, one suspects. One question many might have is, apart from the lack of a multiverse, how bad is the current situation in physics? What, besides that, is going wrong? Read More ›