Search results for string theory

Plasma Physics Feb 13, 2023

New model of quark-gluon plasma solves a long-standing discrepancy between theory and data

Research in fundamental science has revealed the existence of quark-gluon plasma (QGP)—a newly identified state of matter—as the constituent of the early universe. Known to have existed a microsecond after the Big Bang, ...

Astronomy Jan 4, 2023

Are black holes time machines? Yes, but there's a catch

Black holes form natural time machines that allow travel to both the past and the future. But don't expect to be heading back to visit the dinosaurs any time soon.

Quantum Physics Dec 19, 2022

Underground Italian lab searches for signals of quantum gravity

For decades, physicists have been hunting for a quantum-gravity model that would unify quantum physics, the laws that govern the very small, and gravity. One major obstacle has been the difficulty in testing the predictions ...

Soft Matter Dec 12, 2022

A peculiar protected structure links Viking knots with quantum vortices

Scientists have shown how three vortices can be linked in a way that prevents them from being dismantled. The structure of the links resembles a pattern used by Vikings and other ancient cultures, although this study focused ...

Biochemistry Dec 5, 2022

Why synonymous mutations are not always silent

New modeling shows how synonymous mutations—those that change the DNA sequence of a gene but not the sequence of the encoded protein—can still impact protein production and function. A team of researchers led by Penn ...

Nanomaterials Nov 9, 2022

Physicists show how tight 'diet' could produce single-chirality carbon nanotubes

Like a giraffe stretching for leaves on a tall tree, making carbon nanotubes reach for food as they grow may lead to a long-sought breakthrough.

General Physics Nov 1, 2022

As dense as it gets: New model for matter in neutron star collisions

With the exception of black holes, neutron stars are the densest objects in the universe. As their name suggests, neutron stars are mainly made of neutrons. However, our knowledge about the matter produced during the collision ...

Polymers Oct 26, 2022

Scientists discover material that can be made like a plastic but conducts like a metal

Scientists with the University of Chicago have discovered a way to create a material that can be made like a plastic, but conducts electricity more like a metal.

Other Oct 12, 2022

MacArthur's 2022 'genius grant' winners picked to inspire

A specialist in plastic waste management, artists, musicians, computer scientists, and a poet-ornithologist who advocates for Black people in nature are among this year's 25 winners of the John D. and Catherine T. MacArthur ...

Quantum Physics Oct 6, 2022

In race toward quantum computing, North Carolina takes center stage

In the 1950s, computers were bulky, inefficient and limited. They ate up entire rooms but couldn't go beyond rudimentary calculations.

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