Theoretical physicist Lennaert Huiszoon has described a new family of strings in research conducted at the National Institute for Nuclear Physics and High Energy Physics. He investigated so-called open strings which can describe elementary particles with a strong interaction.
With string theory, physicists are trying to construct a unifying theory for gravity and quantum mechanics. The theory describes extremely heavy and very small objects such as the universe shortly after the Big Bang or black holes. According to string theory our universe has ten dimensions: three spatial dimensions, one time dimension and six dimensions which are possibly rolled up into thin cylinders.
One of the problems of string theory is that five different versions of it exist! Four of these are theories with closed strings, which can be visualised with elastic bands that move in space-time. The fifth theory has open strings, which can be visualised with elastic bands cut open. In string theory the physics is limited to the splitting and joining of strings. This is the interaction between elementary particles. The greater the number of branches, the stronger the interaction between the particles. To make the calculations feasible, string theorists only examine weak interactions, in other words strings with few branches.
Michel Philippens | EurekAlert!
UNH scientists help provide first-ever views of elusive energy explosion
16.11.2018 | University of New Hampshire
NASA keeps watch over space explosions
16.11.2018 | NASA/Goddard Space Flight Center
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
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19.11.2018 | Life Sciences