Sentences with phrase «quantum spacetime»

Research on the dynamics of the quantized model revealed an amazing result: processes modeled using the quantum theory on quantum spacetime turned out to exhibit the same dynamics as when the quantum theory takes place in a classical continuous spacetime, i.e. the kind we know from everyday experience.

This function reflects the degree of non-classicalness of quantum spacetime: in conditions similar to classical it is close to zero, whereas in truly quantum conditions its value is close to one.

Calculations showed that in this model, particles that differ in terms of energy interact with quantum spacetime somewhat differently — much as photons of different energies interact with a prism somewhat differently.

They imagine dropping a tiny being into one building block in the quantum spacetime.

Not exact matches

Before the anomaly that created the spacetime bubble, besides nothing, «Quantum physics has to exist (in some sense) so that a quantum transition can generate the cosmos in the first place.»

Inflation happens in a «cold» spacetime in its later phases, relatively weak quantum fluctuations of gravitons and presumably inflatons being present.

For process philosophy», no quantum, no particle no material body no instance of actual concrete existence whatsoever is a permanently enduring body in absolute spacetime, simply located such that it is describable without reference to anything else, any time or place else.

That being the quantum universe could have foamlike fluctuations that rule spacetime, not unlike the 0's and 1's that are the foundation of computing and storing information.

The quest for a theory of quantum gravity gained added significance after the recent discovery of ripples in spacetime dating back to a mere 10 - 36 seconds after the birth of the universe (SN: 4/5/14, p. 6).

Researchers suspect the phenomenon arises from quantum effects at work throughout spacetime, creating a sort of repulsive gravity.

An answer may come from the attempts the people are making to try to develop a theory of quantum gravity because under one of the models for this called up loop quantum gravity spacetime itself almost consists of, like, you can think of it is like a little a atom of spacetime; and one possibility is that when you start to cram everything very close together when space itself is packed down into a small enough point that it can't keep shrinking it, it can't keep compacting it.

Also in December, Joe's latest article, «Kantowski - Sachs spacetime in loop quantum cosmology: bounds on expansion and shear scalars and the viability of quantization prescriptions» — written with Singh — appeared in the journal Classical and Quantum Gravity.

Thus, he points out, the tensor network approach supports the conclusion suggested in previous work by Raamsdonk and others: «Gravitational spacetime emerges from quantum entanglement.»

«It is fascinating that the intrinsically quantum phenomenon of entanglement appears to be crucial for the emergence of classical spacetime geometry.»

This link between tensor networks, entanglement and gravity may prove useful in studying the physics of black holes or in investigating the quantum nature of spacetime at very small distances, Orús proposes.

Given an added dimension, spacetime with gravity emerges from the physics described by quantum field theory on its boundary.

The known laws of physics allow for a matter density up to the so - called Planck value of 1097 kilograms per cubic meter — the density at which the strength of gravity becomes so strong that quantum - mechanical fluctuations should break down the fabric of spacetime.

Since wormholes are contortions of spacetime geometry — described by Einstein's gravitational equations — identifying them with quantum entanglement would forge a link between gravity and quantum mechanics.

Among them: understanding the wormhole - entanglement equality could be the key to merging quantum mechanics and general relativity, that details of the merger would explain the mystery of entanglement, that spacetime itself could emerge from quantum entanglement, and that the controversies over how to interpret quantum mechanics could be resolved in the process.

In one recent paper, Caltech physicists ChunJun Cao, Sean M. Carroll and Spyridon Michalakis attempt to show how spacetime can be «built» from the vast network of quantum entanglement in the vacuum.

But, thanks to quantum mechanics, not only did the quantum field created in the big bang fluctuate — so did spacetime itself.

It seems that unzipping the fabric of spacetime and harking back to 19th - century notions of time could lead to a theory of quantum gravity.

The main story» Splitting Time from Space — New Quantum Theory Topples Einstein's Spacetime,» describes recent excitement over a quantum theory of gravity proposed by physicist Petr Hoava of the University of California, Berkeley.

Euclidean Quantum Gravity Made famous by physicist Stephen Hawking, this approach supposes that spacetime emerges from a grand quantum average of all possible shapes.

Much more recently, the math describing quantum error correction has turned up in a completely unexpected context — efforts to understand the nature of spacetime by uniting gravity with quantum mechanics.

«Two years ago we reported that in our quantum cosmological models, different types of particles feel the existence of spacetimes with slightly different properties.

For years now it has been suspected that particles of different energies in quantum universe models essentially sense spacetimes with slightly different structures.

We start with the fuzzy world of quantum geometry, where it is even difficult to say what is time and what is space, yet the phenomena occurring in our cosmological model still look as if everything was happening in ordinary spacetime!

Conversely, on a quantum scale spacetime is highly turbulent.

From Newton's unchanging realm in which space and time are absolute, to Einstein's fluid conception of spacetime, to quantum mechanics» entangled arena where vastly distant objects can bridge their spatial separation to instantaneously coordinate their behavior or even undergo teleportation, Greene reveals our world to be very different from what common experience leads us to believe.

(*) Unless you care to suggest that, say, plate tectonics, quantum electrodynamics, gravity - as - distortion - of - spacetime, and evolution of biological organisms are also «guesswork».