The information describing a volume of space may be entirely contained on its boundary surface. This article examines where that idea came from, what the AdS/CFT correspondence established, and what it implies about the nature of space and information.
#cosymorg #science #holographic_principle
https://cosym.org/2026/05/19/is-reality-a-lower-dimensional-projection/?utm_source=mastodon&utm_medium=jetpack_social
Ⅸ: Is Reality a Lower-Dimensional Projection? | coSym.
The information describing a volume of space may be entirely contained on its boundary surface. This article examines where that idea came from, what the AdS/CFT correspondence established, and what it implies about the nature of space, gravity, and information.
A technical overview of spacetime singularities from the Penrose-Hawking theorems to the limits of stellar collapse.
Examine how LQG, string theory, and asymptotic safety resolve the infinite curvature of the classical manifold.
#cosymorg #science #singularities
https://cosym.org/2026/05/12/singularities/?utm_source=mastodon&utm_medium=jetpack_social
Ⅷ: Singularities | coSym.
What are singularities? How do they form from the death of stars? The types general relativity predicts and what the three leading approaches to quantum gravity each propose as a resolution?
Is spacetime smooth and continuous, or does it have a fundamental granular structure?
This article examines the theoretical and experimental evidence for spacetime discreteness.
#cosymorg #science
https://cosym.org/2026/05/03/is-spacetime-discrete/?utm_source=mastodon&utm_medium=jetpack_social
Ⅶ: Is Spacetime Discrete? | coSym.
Is spacetime smooth and continuous, or does it have a fundamental granular structure? This article examines the theoretical and experimental evidence for spacetime discreteness.
What if the failure of quantum gravity was never a problem with the theory but only with the method? What if gravity, at the highest energies, simply stops changing?
#cosymorg #science #asymptoticsafety
https://cosym.org/2026/04/27/asymptotic-safety/?utm_source=mastodon&utm_medium=jetpack_social
Ⅵ: Asymptotic Safety | coSym.
Every attempt to quantise gravity using standard methods produces infinities that cannot be controlled. Asymptotic safety asks what if gravity, at the highest energies, simply stops changing?
String theory replaces point particles with one-dimensional strings, providing a description for gravity.
This article examines the theory's development, its concrete results, and the landscape problem it has not resolved.
#cosymorg #science #stringtheory
https://cosym.org/2026/04/20/string-theory/?utm_source=mastodon&utm_medium=jetpack_social
Ⅴ: String Theory | coSym.
String theory replaces point particles with one-dimensional strings, providing a description for gravity. This article examines the theory's development, its concrete results, and the landscape problem it has not resolved.
Loop quantum gravity suggests spacetime is not continuous but quantised, leading to new insights into black holes and the early universe. In the article, explore how far this idea goes and where it falls short.
#cosymorg #science #LQG #BigBounce #SpinFoam #SpinNetworks
https://cosym.org/2026/04/11/loop-quantum-gravity/?utm_source=mastodon&utm_medium=jetpack_social
Ⅳ: Loop Quantum Gravity | coSym.
Loop quantum gravity predicts that space is fundamentally discrete, with quantised units of area and volume, and offers possible resolutions to the early universe.
What is renormalisation, and why does it work for electromagnetism, the strong force and the weak force but fail completely when applied to gravity?
#cosymorg #science #quantumgravity
https://cosym.org/2026/04/06/the-quantum-gravity-problem/?utm_source=mastodon&utm_medium=jetpack_social
Ⅲ: The Quantum Gravity Problem | coSym.
Renormalisation is the procedure that made quantum field theory work. It successfully describes electromagnetism, the strong force, and the weak force with extraordinary precision. When applied to gravity, it fails.
Quantum mechanics predicts experimental results to eleven significant figures. Yet it does not explain what happens when a quantum system is observed. This article examines the measurement problem and why the problem has direct consequences for any theory of quantum gravity.
#cosymorg #science #QM
https://cosym.org/2026/04/01/the-measurement-problem/?utm_source=mastodon&utm_medium=jetpack_social
Ⅱ: The Measurement Problem - coSym.
This article examines the measurement problem in quantum mechanics and why the problem has direct consequences for any theory of quantum gravity.
What is Planck length? How it emerges from fundamental constants, what it reveals about quantum gravity, and why physics breaks down at the smallest scales?
#cosymorg #science #planck_length
https://cosym.org/2026/03/30/the-planck-length/?utm_source=mastodon&utm_medium=jetpack_social
Ⅰ: The Planck Length - coSym.
In 1899, Max Planck derived a length from three fundamental constants of nature. It sits at 10⁻³⁵ metres – sixteen orders of magnitude below the reach of the most powerful accelerator ever built. What it marks is the scale at which the two most successful theories in physics simultaneously break down.
Modern deep learning violated classical statistical theories by achieving exceptional generalisation despite overparameterization, raising critical questions about theoretical foundations and the underlying mechanics of neural networks.
#cosymorg #science #neural_network #computerscience
https://cosym.org/2026/03/23/what-neural-networks-actually-learn/?utm_source=mastodon&utm_medium=jetpack_social
What Neural Networks Actually Learn? - coSym.
Modern deep learning violated classical statistical theories by achieving exceptional generalisation despite overparameterization, raising critical questions about theoretical foundations and the underlying mechanics of neural networks.
