And here I am.

Research by myself: 5.7%

Activism: 4.9%
Proposal writing: 4.7%
Paper writing: 4.4%
Listening to talks: 1.8%
Examinations: 1.3%

Outreach: 0.6%
Science politics: 0.3%
Catching up with the arXiv: 0.3%

In fact, all observed physical elementary particles become effectively extended objects, a complete change of paradigm from quasi pointlike elementary particles.

If this can be eventually confirmed at experiment, this may change fundamentally how we think about particles.

You can find the background about this in my review arxiv.org/abs/1712.04721 - this 45 years-old prediction is entirely redefining what we think are physical particles in electroweak physics. It may be decisive for the next big collider, and perhaps even the current one, to take this into account.

This supports the picture that physical particles are not the elementary ones, but need to be dressed by Higgs particles as bound states, without this changing their mass. This makes them extended objects. In theories different from the standard model, this can even alter the spectrum entirely.

Still feels surreal to discuss an transgenerational effort on a day this is released: bsky.app/profile/fish...

On my way back. Intensive day, but quite happy with the ambition level of the outcome. As soon as officially finalised, I will share it. But for the moment, it will need to be approved first.

Planning 50 years ahead feels unreal in time of the #ClimateCollapse.

Ich möchte viele mehr davon!

Danke, der Text ist echt hilfreich!

The Brout-Englert-Higgs effect in quantum gravity offers a third option: Supersymmetry is intact, but we fluctuate only weakly around a configuration of the universe. Bosons and fermions can be seen as effective fluctuations, while at the same time supersymmetry itself is intact, but not observable.

And it is this consistency which brings us to supersymmetry. If you add gravity, mathematical consistency requires you to make the difference between fermions and bosons either invisible, or to break supersymmetry. The latter is the preferred reason why we should not observe supersymmetry.

As I argue in arxiv.org/abs/1908.02140, this explains why quantum field theory works, despite quantum gravity. This is not directly related to gravity being weak, but because of the Brout-Englert-Higgs effect. Otherwise, mathematical consistency would require us to always keep gravity explicit.

Because our quantum universes are almost classical, they have distance regimes which look like flat space, and thus objects behave in it like in usual quantum theory.

This allows to expand, just like we do in electroweak physics, around this configuration.

How so? We see that particular configuration dominate our quantum gravity version. They show only small fluctuations around a particular configuration of the simulated universes. But this is exactly what the Brout-Englert-Higgs effect is! This can explain why we see almost particle-like excitations: