There is so much about our closest star that we still don't know!
That is why NASA and ESA will sent two missions to observe the Sun very closely.
Understand the behaviour of the Sun's corona might help scientists to predict future mass ejections as well as the star's evolution.
Discover more by clicking on the image below, where you can find amazing videos about the missions!
More about the ultracold state of matter, Bose-Einstein Condensates, and new experiments in the International Space Station!
I am sure you love scrambled eggs for breakfast. They can be a good way to start in the morning!
Have you heard of "scramble" in another context? Scramble means to mix up, shuffle, melee; in general, you scramble something when it becomes disorganized, chaotic, leading to a lose of information.
In physics, it has been conjectured that black holes are the fastest scramblers in nature [link1, link2], as any information thrown into them is "scrambled" with what is inside, and then is released very fast (emission known as Hawking radiation). This also called "Butterfly effect" indicates that an initial perturbation induces the spreading of information and a growth of chaos. There is a lot of research going on about the role of scrambling in black holes, string theory and the connection with quantum gravity. One example can be found here.
The next step leads us to thermodynamics, as thermal systems are considered chaotic as well. The phenomenon of thermalization (the process of physical bodies reaching thermal equilibrium through mutual interaction) is very sensitive to the initial conditions. Now we start to see a link with the process of scrambling in black holes described above.
We are now ready to understand the link at the quantum level. If we look at the process of thermalization in a quantum system, it is the same as to understand the spreading of information, or in other words, how the system scrambles. The out-of-time-order correlators (OTOC) are used to measure quantum chaos, and therefore many of the current experiments (to know more click on the image below) focus on trying to measure these correlators through non local measurements. The idea is to be able to set a time scale on which black holes should start releasing information. And to make everything even harder to understand, it seems in the process of scrambling time flows in both directions!
All in all, the important concepts are here. Furthermore, any additional information can be found in the links provided.
In summary, any information falling into a black hole gets scrambled and the released of radiation that follows could be key to understand quantum gravity.
It is like putting milk into your coffee, mixing them (process of thermalization), and then you are trying to understand where the milk comes from, although everything is already light brownish and you have no means to access the initial white milk.
As it is not possible to study black holes in the lab, the idea is use many-body quantum physics and quantum chaos, by studying thermalization in a bunch of atoms (spins) through these out-of-time correlators, thus suggesting a table-top simulation for quantum gravity.
Entanglement, that "spooky action at a distance" that drove Einstein crazy. Once more it has been demonstrated that entanglement exists, and this new record opens up possibilities for quantum communication and, yes, teleportation. It will not be in the near future that we could travel "instantaneously" to another corner in the universe. However, this small step could be a giant leap for quantum physics.
If you want to know more about this achievement, please click on the image below.
For more information and an introductory video about quantum entanglement click HERE.
Yes, teleportation is possible.. in the quantum world!
Click on the image below and enjoy the video!
If you have any further question, do not forget to use the Forum!
Amazing as it sounds, IBM plans to commercialize a "quantum computer" this year! But do not get so excited just yet... the race towards the first actual quantum computer is still on!
If you want to know more, just click on the image below. You have more information also HERE.
This educational documentary is marvelous. It explains the theory of relativity in a time when cinema was still in its infancy (there is not even music in the film). Just eight years after Einstein formulated the general relativity, this video shows all key concepts of the theory. The movie talks about the speed of light, the effect of gravity, that time is relative, and even about time travel! Enjoy, it is definitely worth watching!
You can find by clicking in the image below an article I have written about quantum computation, hope you enjoy it!
I do not think I have deppen enough into the winning theme of this year's Nobel Prize in Physics.
The winners have been Thouless, Haldane and Kosterlitz "for theoretical discoveries of topological phase transitions and topological phases of matter".
But what does topology mean?
To begin with, the definition of topology is as follows: the mathematical study of the properties that are preserved through deformations, twistings, and stretchings of objects.
You can access below an explanatory video about the topology, as a mathematical concept.
Now, geometry and mathematics, what is the physical relationship with matter?
By clicking on the image below you can access all kind of relevant information about topological phases.
Thanks to Satoshi Tanda, from Hokkaido University, for the image.
Some time ago Sciencefreaktion dedicated a post to Quantum biology (LINK). One of the topics in the discussion was photosynthesis. Now imagine that we could design a solar cell at a quantum level based on how plants extract energy from the sun. It seems that this idea came up to a physicist in California, and a group of researchers have realised the design of this quantum photocell. Discover more below!