Physics
•
Quantum mechanics
•
Quantum entanglement
•
Particle physics
•
Thought
•
Causality
Concept
Thought experiment
Metaphysics of science
Time symmetry
Snipview
Retrocausality
Retrocausality (also called retro-causation, retro-chronal causation, backward causation, and similar terms) is any of several hypothetical phenomena or processes that reverse causality, allowing an e...
Quantum entanglement
•
Faster-than-light
•
Tachyon
•
Closed timelike curve
•
Delayed choice quantum eraser
•
Quantum radar
A New ‘Einstein’ Equation Suggests Wormholes Hold Key To Quantum Gravity
A new Einsteinian equation, ER=EPR, may be the clue physicists need to merge quantum mechanics with general relativity.
China Launches The First Quantum Communications Satellite – And What Is That, Exactly?
Congratulations are in order for China: by launching the world's first quantum communications satellite, the country has achieved an interesting — if..
Schrödinger’s cat just got even weirder (and even more confusing)
The researchers hope their findings will help make quantum computers a reality.
Three 'Twisted' Photons In 3 Dimensions
Researchers at the Institute of Quantum Optics and Quantum Information, the University of Vienna, and the Universitat Autonoma de Barcelona have achieved a new milestone in quantum physics: they were ...
A Different Picture Of Quantum Surrealism
With its ideas of particles zipping in and out of existence, quantum mechanics is probably the kookiest-sounding theory in science. And our understanding of it is little helped by the mysterious “pro...
Albert Einstein Wouldn’t Like It: New Test Proves Universe Is ‘Spooky’
The universe really is weird, which is bad news both for Albert Einstein and for would-be hackers hoping to break into quantum encryption systems. Eighty years after the physicist dismissed as “spooky...
The Race To Prove 'Spooky' Quantum Connection May Have a Winner
Particles don’t obey the same rules as people. Poke a particle, and another one far away can instantly respond the touch -- without any messages passing through the space between, as if the two partic...
Quantum Teleportation? Producing Spin-Entangled Electrons
Researchers have successfully produced pairs of spin-entangled electrons and demonstrated that they remain entangled even when they are separated from one another on a chip. This research could contri...
New Method Of Quantum Entanglement Vastly Increases How Much Information Can Be Carried In A Photon
A team of researchers led by UCLA electrical engineers has demonstrated a new way to harness light particles, or photons, that are connected to each other and act in unison no matter how far apart the...
Quantum Physics: What Is Really Real?
Ever since they invented quantum theory in the early 1900s, explains Maroney, who is himself a physicist at the University of Oxford, UK, they have been talking about how strange it is — how it allows...
Quantum Computing Is About To Overturn Cybersecurity’s Balance Of Power
Quantum mechanics is now being used to construct a new generation of computers that can solve the most complex scientific problems—and unlock every digital vault in the world. These will perform in s...
How Quantum Pairs Stitch Space-Time
Brian Swingle was a graduate student studying the physics of matter at the Massachusetts Institute of Technology when he decided to take a few classes in string theory to round out his education — “be...
Wormhole Entanglement And The Firewall Paradox
One hundred years after Albert Einstein developed his general theory of relativity, physicists are still stuck with perhaps the biggest incompatibility problem in the universe. The smoothly warped spa...
Physicists show 'quantum freezing phenomenon' is universal
Physicists who work on quantum technologies are always looking for ways to manage decoherence, which occurs when a quantum system unavoidably interacts with the surrounding environment. In the past fe...
Great Scott! Reverse-Causality Research Ends in a Quantum Muddle
One of the longest-running and weirdest examples of a crowdfunded scientific experiment is finally reaching the end of the road, and the results will come as a disappointment to anyone who wishes the ...
Quantum Record! 3,000 Atoms Entangled in Bizarre State
Using a single particle of light, scientists have for the first time linked together thousands of atoms in a bizarre state known as quantum entanglement, where the behavior of the atoms would stay con...
Quantum entanglement
Quantum entanglement is a physical phenomenon that occurs when pairs or groups of particles are generated or interact in ways such that the quantum state of each particle cannot be described independe...
Faster-than-light
Faster-than-light (also superluminal or FTL) communication and travel refer to the propagation of information or matter faster than the speed of light.Under the special theory of relativity, a particl...
Tachyon
A tachyon /ˈtæki.ɒn/ or tachyonic particle is a hypothetical particle that always moves faster than light. The word comes from the Greek: ταχύ or tachy /ˈtɑːxi/, meaning "swift, quick, fast, rapi...
Tachyon - Wikipedia
Closed timelike curve
In mathematical physics, a closed timelike curve (CTC) is a world line in a Lorentzian manifold, of a material particle in spacetime that is "closed", returning to its starting point. This possibility...
Delayed choice quantum eraser
A delayed choice quantum eraser, first performed by Yoon-Ho Kim, R. Yu, S.P. Kulik, Y.H. Shih and Marlan O. Scully, and reported in early 1999, is an elaboration on the quantum eraser experiment that ...
Quantum radar
Quantum radar is a theoretical remote-sensing method based on quantum entanglement. The most convincing model has been proposed by an international team of researchers. This team designed a model of q...
Hartman effect
The delay time for a quantum tunneling particle is independent of the thickness of the opaque barrier. This is called the Hartman effect, after Thomas Hartman who discovered it in 1962. In 2007, Nimtz...
John Stewart Bell
John Stewart Bell FRS (28 June 1928 – 1 October 1990) was a Northern Irish physicist, and the originator of Bell's theorem, a significant theorem in quantum physics regarding hidden variable theories....
John Stewart Bell - Wikipedia
Superfluid vacuum theory
Superfluid vacuum theory (SVT), sometimes known as the BEC vacuum theory, is an approach in theoretical physics and quantum mechanics where the fundamental physical vacuum (non-removable background) i...
Quantum entanglement - What is quantum entanglement
One of the most amazing phenomena in quantum mechanics is that of entanglement. Entanglement can be so mysterious it can almost seem magical. With help from ...
Quantum nonlocality
In theoretical physics, quantum nonlocality is the phenomenon by which the measurements made at a microscopic level necessarily refute one or more notions (often referred to as local realism) that are...
Hypersphere (The History of the Galaxy)
Expansion: The History of the Galaxy (Russian: "История Галактики", Istoriya Galaktiki) is a science fiction book series by Russian writer Andrey Livadny. With the plot span between 23rd and 39th ...
Hypersphere (The History of the Galaxy) - Wikipedia
Technology in Revelation Space
This article lists elements of technology in the fictional Revelation Space universe created by Alastair Reynolds.
Abstraction is the process by which humans with neural implants gain access to wi...
Technology in Revelation Space - Wikipedia