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What Makes Information Physical? | Chiara Marletto
What makes information a real part of physics rather than just a way of describing the world?
Chiara Marletto explains how constructor theory grounds information in physical reality, why information is not merely a human concept, and how knowledge differs from information by possessing the ability to persist and shape the world around it.
0:00 Constructor Theory and the Physics of Information 1:49 Is Information Fundamental to Reality? 4:42 Constructor Theory Beyond Quantum Information 6:31 Information, Knowledge, and Resilience 10:17 Why Knowledge Emerges Above Fundamental Physics.
Chiara Marletto is a Research Fellow at Wolfson College, University of Oxford. She holds degrees from the universities of Oxford and Turin. Her main research focus is in theoretical physics, and she also pursues interests in theoretical biology, epistemology, and Italian literature. The Science of Can and Can’t: A Physicist’s Journey Through the Land of Counterfactuals is her first trade book.
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Closer To Truth, created and hosted by Robert Lawrence Kuhn, presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence and sentience. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers. #CloserToTruth #Cosmos #ChiaraMarletto #InformationTheory #Knowledge.
Quantum-gravitational mechanism could explain the universe’s homogeneity
Our universe is known to be remarkably homogeneous and isotropic. This essentially means that matter is distributed evenly throughout the universe and that it looks almost the same in all directions.
Physics theories, however, predict that in its early days, the universe may have been far less orderly, with different regions expanding at varying rates. Yet how the universe could have evolved from this potentially uneven beginning into the smoothness we observe today remains unclear.
Researchers at Baylor University, Jiangxi Normal University, State University of Rio de Janeiro and Universidade Federal Fluminense recently delineated a mechanism that could explain how the universe shifted from early unevenness (i.e., anisotropy) to its current homogeneity. Their theoretical paper, published in Physical Review Letters, models the evolution of the early universe using a framework known as the modified loop quantum cosmology (mLQC-I) model.
Neutron-based technique reveals uneven lithium flow in batteries
A neutron-based mapping technique has been used to track the movement of lithium ions in real time inside a functioning all-solid-state battery.
Researchers at the Institut Laue-Langevin (ILL) in France discovered unexpected structural complexities, which could inform the design of safer, more efficient solid-state batteries.
The operando neutron powder diffraction technique was used to peer inside the battery interface. Interestingly, the experiment revealed a chaotic structure within the electrode, showing that lithium doesn’t flow through the battery nearly as smoothly as previously thought.
Scientists to track critically endangered tope sharks in the Solent
One of Britain’s largest and most endangered sharks is to be tracked through the busy waters of the Solent, following a £230,000 research grant awarded to scientists at the University of Portsmouth – part of the largest ever government investment in recovering England’s threatened wildlife.
The tope shark, listed as critically endangered on the IUCN Red List, can grow to nearly two metres in length, yet remains largely invisible to the public despite living in some of the UK’s most heavily trafficked coastal waters.
Facing sustained pressure from overfishing, bycatch, habitat loss and wider environmental change, tope populations have declined significantly across their global range.
