Gianluca Bertaina

Editor searching reviewers in August

Google Scholar Is Doomed Academia built entire careers on a free Google service with zero guarantees. What could go wrong?

Since search is dead, how soon do you think Google Scholar is headed for the Google Graveyard? I'm betting it's soon, and academia is NOT prepared

m.youtube.com/watch?v=K0si...

Unraveling Open Quantum Dynamics with Time-Dependent Variational Monte Carlo We introduce a method to simulate open quantum many-body dynamics by combining time-dependent variational Monte Carlo (tVMC) with quantum trajectory techniques. Our approach unravels the Lindblad mast...

Here is the preprint:
arxiv.org/abs/2506.23928

#OpenQuantumSystems #ComputationalPhysics #ManyBodyPhysics #QuantumMonteCarlo #QuantumMetrology #Quantum 🧪

This research was driven by the excellent work of Christian Apostoli and Jacopo D'Alberto and our fruitful and always fun collaboration with Marco G. Genoni and Davide E. Galli.

* Unprecedented accuracy: Maintains high fidelity even in complex, highly entangled regimes, within the flexibility of the variational approach.

* Massive parallelism: Double Monte Carlo sampling of configurations and of trajectories.

What does this mean for researchers?
* Drastic reduction in cost: Slashes the computational resources needed for large systems.

In our latest work, we introduce a new method that unravels master equations into quantum trajectories, solved using a stochastic time-dependent variational Monte Carlo approach.

Schematic representation of the otVMC method. Open quantum system dynamics is unreveled in quantum trajectories, and each trajectory is evaluated with the stochastic time-dependent variational Monte Carlo method

New preprint!

Simulating the dynamics of open quantum systems is a major computational bottleneck, largely due to the exponential scaling of density matrices. We're tackling this challenge head-on. 🧪

Butterfly meme: a physicist looks at any physical system and asks "Is this a harmonic oscillator?"

Our SPS group circulated this:

Un augurio ai maturandi e a Venditti: scoprire che la matematica non è fredda, è poesia che pensa | Il Foglio Il cantante oppone la poesia alla freddezza dei numeri e invita i ragazzi alle prese con l'esame di maturità a non “fare della matematica il proprio mestiere”. Ma la vera matematica non è calcolo sterile né oppressione di numeri: è libertà, intuizione, bellezza

www.ilfoglio.it/scienza/2025...

Fearing yet more war;
hoping for peace.

May war-mongering leaders be removed, and innocents everywhere be safe. What else is worth saying?

My students' final essays are due tomorrow. Lol.

The Helgoland 2025 quantum mechanics centenary meeting kicked off last night at the rather grand Hotel Atlantic in Hamburg, with a dinner followed by historical talks.

Fluorine surprises by becoming heaviest atom ever to quantum tunnel First experimental evidence of tunnelling in fluorine pushes the boundary of our understanding of chemical bonding

Quantum tunnelling may be common at the tiniest scales, but no one had ever observed the phenomenon in fluorine - the element was simply thought to be too heavy. Now, this accepted wisdom has been upended in new experiments that observe fluorine tunnelling

www.chemistryworld.com/news/fluorin...

How Noether’s Theorem Revolutionized Physics | Quanta Magazine Emmy Noether showed that fundamental physical laws are just a consequence of simple symmetries. A century later, her insights continue to shape physics.

The conceptual consequences of Noether’s theorem are hard to overstate.

These are real images of exoplanets.

Four super-Jupiters, imaged 10 times over 12 years around a star 133 lightyears away.

These are real, giant worlds, out there in the dark.

And we can see them.

Git was 20 years old this week. Written by the creator of Linux as a tool to streamline his workflow - it shows the importance of making tools. If you have a better way of doing something, write and share it. It's possible that few others understand the problem, let alone have the solution you do!

La prima stagione di “Una mattina” - Il Post È uscito il nuovo podcast di Luca Misculin che cerca di raccontare per bene la Resistenza italiana: sono disponibili le prime cinque puntate

È uscito il nuovo podcast di Luca Misculin che cerca di raccontare per bene la Resistenza italiana: sono disponibili le prime cinque puntate

www.ilpost.it/2025/04/25/u...

We just need to turn the negative productivity of scientists at NASA and IRS auditors that DOGE fired to gainfully making shoes in Nike factories reshored from Vietnam.

This is the groundbreaking economic thinking of communist purges from Mao to Pol Pot with a sprinkle of American Exceptionalism.

Explaining to young men that outsourcing your thinking to LLMs is bad because reading and writing is like lifting for your brain

Spettacolo https://www.infn.it/osservati-per-la-prima-volta-gli-effetti-quantistici-della-gravita/

The Trump Administration Accidentally Texted Me Its War Plans U.S. national-security leaders included me in a group chat about upcoming military strikes in Yemen. I didn’t think it could be real. Then the bombs started falling.

In 25 years of covering national security, I’ve never seen a story like this: Senior Trump officials discussed planning for the U.S. attack on Yemen in a Signal group--and inadvertently added the editor-in-chief of The Atlantic. www.theatlantic.com/politics/arc...

1. For the past thirty years I've had the best job in the world.


I've had the opportunity to follow my curiosity; explore the workings of nature and society; mentor students and junior colleagues in the same process; and teach generations of students about it all.

Planet Definitions xkcd.com/3063

Two plastic trays of Portuguese egg, custard tarts that look yellow with just a little bit of gold and brown in a lighted glass pastry display case

This timeline needs more pastel de nata.

#PhysicsFactlet
Remake of an old animation about quantum tunnelling in the time domain.
🧪⚛️💡

A few details:
* The incident and reflected wavefunctions interfere, creating fringes when it hits the barrier.
* Even when far away from the barrier, the wavefunction is slowly broadening.