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One of the biggest challenges in physics, marrying quantum theory with gravity, has a new hypothesis.
https://www.eurekalert.org/news-releases/1075665
#quantumgravity #physics #sciencenews
EurekAlert!Gravity from entropy: A radical new approach to unifying quantum mechanics and general relativityThe study introduces a novel approach that derives gravity from quantum relative entropy, bridging the gap between two of the most fundamental yet seemingly incompatible theories in physics: quantum mechanics and Einstein’s general relativity.
Exciting development in theoretical physics! Professor Ginestra Bianconi of Queen Mary University of London proposes a novel framework deriving gravity from quantum relative entropy, potentially unifying quantum mechanics and general relativity. This approach introduces the G-field, offering fresh insights into dark matter and the universe's accelerated expansion.
#QuantumGravity #EntropicGravity #DarkMatter #GoodNews
https://phys.org/news/2025-03-gravity-entropy-radical-approach-quantum.html
Phys.org · Gravity from entropy: A radical new approach to unifying quantum mechanics and general relativity
Huh... the bot (?) accounts from #freysa Mastodon instance have managed to push the tags #physics and #quantumgravity into the Current Trends list on my chaos.social homepage, by posting the same drivel from lots of accounts.
I'd be very OK with banning this instance – doesn't appear to have any useful content, or did I miss anything?
I've just viewed a lecture from Carlo Rovelli, an Italian physicist, about the theories of TIME. It was a fascinating lecture to hear. Frankly, it all made sense and I can't wait to get hold of his book :The Order of Time.
#Physics #QuantumMechanics #NewtonianSpace #QuantumGravity #Neurology #SpecialRelativity #SpaceTime #ArrowOfTime
Dr. Ana Alonso-Serrano is a long-term vistor at @mpi_grav Potsdam.
She has worked on several aspects at the interface of quantum mechanics and general relativity. Nowadays, she is focused on the study the quantum behavior of spacetime close to the classical singularities and phenomenology of quantum gravity.
www.aei.mpg.deAna Alonso-Serrano
The challenge of uniting Einstein’s gravity with quantum mechanics remains a profound enigma. General relativity describes gravity on a cosmic scale, while quantum mechanics governs subatomic particles. Yet when strong gravitational fields come into play—such as near black holes—attempts to blend the two break down. Does this mismatch point to a deeper theory beyond our current models? The search continues, hinting that reality may weave together in ways we have yet to grasp. #QuantumGravity
What if gravity is quantum? Marletto & Vedral propose an experiment to entangle particles through gravity alone, inspired by Marletto's Constructor Theory. The results would allow us to decide, if I understand correctly, whether gravity is quantum or not… It’s important… it’s a bit like the Bell inequality experiments by Aspect; this experiment will allow us to settle this question. Fascinating! #QuantumGravity #Physics https://www.youtube.com/watch?v=Uey_mUy1vN0
I haven't worked in #physics since my undergraduate studies, but I still enjoy articles like this about the cutting edge of the discipline. Experimental design to collect empirical evidence for #quantumgravity, not currently practical, but maybe in the next 10-20 years. I've always thought of the topic as a purely theoretical endeavour with no hope of experimental validation.
Physics World · Century-old photoelectric effect inspires a new search for quantum gravity – Physics WorldProposed experiment could demonstrate absorption and emission of individual gravitons
#Philosopher of Physics Karen Crowther
…"Moving from #physics to #philosophy we use the same methods. It's helpful, this kind of analytic trying to deduce things and solve the arguments, and with the same sort of satisfaction, too … In the same way that you see a philosophical argument and you know that something's wrong with it"…
https://www.youtube.com/watch?v=TonV6EJvKzc 23 Aug 2017 https://KarenCrowther.space
Is the nature of our universe holographic?
#blackhole #universe #holography #spacetime #quantumgravity #research #science
Quanta Magazine · If the Universe Is a Hologram, This Long-Forgotten Math Could Decode It
Interesting set of Quanta articles today
Clue to Quantum Gravity Sits on Surfaces of Black Holes
https://www.quantamagazine.org/the-1-clue-to-quantum-gravity-sits-on-the-surfaces-of-black-holes-20240925
If Universe Is a Hologram This Math Could Decode It
https://www.quantamagazine.org/if-the-universe-is-a-hologram-this-long-forgotten-math-could-decode-it-20240925
Can Space-Time Be Saved?
https://www.quantamagazine.org/can-space-time-be-saved-20240925
Two Faces of Space-Time
https://www.quantamagazine.org/the-two-faces-of-space-time-20240925
...
Quanta Magazine · The #1 Clue to Quantum Gravity Sits on the Surfaces of Black Holes | Quanta MagazineA black hole formula worked out in the 1970s remains the most concrete clue physicists have about the threads of the space-time fabric.
#ICYMI: The lectures from this year's International Congress of Mathematical Physics in Strasbourg, France, are online now.
Here's the talk “E10 and K(E10): searching for a fundamental symmetry of physics” by Hermann Nicolai, director emeritus at the @mpi_grav in Potsdam, head of the ERC-funded research group “Exceptional Quantum Gravity”.
www.canalc2.tvE10 and K(E10): searching for a fundamental symmetry of physics - CanalC2 : la web télévision des événements universitaires de l'Université de Strasbourg
The lectures from this year's International Congress of Mathematical Physics in Strasbourg, France, are online now.
Here's the talk “E10 and K(E10): searching for a fundamental symmetry of physics” by Hermann Nicolai, director emeritus at the @mpi_grav in Potsdam, head of the ERC-funded research group “Exceptional Quantum Gravity”.
www.canalc2.tvE10 and K(E10): searching for a fundamental symmetry of physics - CanalC2 : la web télévision des événements universitaires de l'Université de Strasbourg
A physics paper with an official publication date of Jan 2025, "On the same origin of quantum physics and general relativity from Riemannian geometry and Planck scale formalism", already has an expression of concern. If a paper is retracted before it is published, does the journal vanish in a catastrophic spacetime paradox?
https://www.pubpeer.com/publications/EC8B4C9BB47F33E3A30B7E443028F3
#PublicationEthics #ResearchIntegrity #Retractions #Elsevier #AstroParticlePhysics #QuantumPhysics #GeneralRelativity #QuantumGravity #PhysicsMastodon
www.pubpeer.comPubPeer - On the same origin of quantum physics and general relativity...There are comments on PubPeer for publication: On the same origin of quantum physics and general relativity from Riemannian geometry and Planck scale formalism (2025)
Can we unify general relativity and quantum mechanics? 
• A theory of quantum gravity would resolve one of the biggest conflicts in modern physics, providing a unified understanding of the fundamental forces. #QuantumGravity #UnifiedTheory #Physics
