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...
Retrocausality - Wikipedia
Quantum entanglement
•
Faster-than-light
•
Tachyon
•
Closed timelike curve
•
Delayed choice quantum eraser
•
Quantum radar
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.
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.
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...
The Day After Tomorrow (TV special)
The Day After Tomorrow (also known as Into Infinity in the United Kingdom) is a 1975 British science-fiction television drama produced by Gerry Anderson between the two series of Space: 1999. Written ...
The Day After Tomorrow (TV special) - Wikipedia
Teletransporter
Teletransporter or teleporter refers to a fictional machine that allows teleportation. It is widely used in literature science fiction and fantasy, and was popularized in the television series Star Tr...
Spontaneous parametric down-conversion
Spontaneous parametric down-conversion (also known as SPDC, parametric fluorescence, or parametric scattering) is an important process in quantum optics, used especially as a source of entangled photo...
Spontaneous parametric down-conversion - Wikipedia
Kefitzat Haderech
Kefitzat Haderech (Hebrew: קְפִיצַת הַדֶּרֶךְ, Qəfiẓat haDéreḫ or Kfitzat haDérech, Qəp̄îṣáṯ hadDéreḵ) is a Jewish Kabbalistic term that literally means "contracting the path." The word ...
Inertialess drive
The inertialess drive is a fictional means of accelerating to close to the speed of light or faster-than-light travel, originally used in Triplanetary and the Lensman series by E.E. "Doc" Smith, and l...
Exotic matter
In physics, exotic matter is matter that somehow deviates from normal matter and has "exotic" properties. Exotic mass has been considered a colloquial term for matters such as Dark matter, negative ma...
Density matrix
A density matrix is a matrix that describes a quantum system in a mixed state, a statistical ensemble of several quantum states. This should be contrasted with a single state vector that describes a q...
Density matrix - Wikipedia