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Einstein and Euler Put to the Test at the Edge of the Universe

June 22, 2023 —The cosmos is a unique laboratory for testing the laws of physics, in particular those of Euler and Einstein. Euler described the movements of celestial objects, while Einstein described the way in which celestial objects distort the Universe. Since the discovery of dark matter and the acceleration ...

Curved Spacetime in a Quantum Simulator

May 17, 2023 —The connection between quantum physics and the theory of relativity is extremely hard to study. But now, scientists have set up a model system, which can help: Quantum particles can be tuned in such a way that the results can be translated into information about other systems, which are much harder ...

Curved Spacetime in the Lab

Dec. 9, 2022 —In a laboratory experiment, researchers have succeeded in realizing an effective spacetime that can be manipulated. In their research on ultracold quantum gases, they were able to simulate an entire family of curved universes to investigate different cosmological scenarios and compare them with the ...

Physicists Observe Wormhole Dynamics Using a Quantum Computer

Nov. 30, 2022 —Scientists have developed a quantum experiment that allows them to study the dynamics, or behavior, of a special kind of theoretical ...

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First Glimpse of What Gravity Looks Like on Cosmological Scales

Nov. 4, 2022 —Scientists have reconstructed gravity to find a more robust way of understanding the ...

Active Matter, Curved Spaces: Mini Robots Learn to 'Swim' on Stretchy Surfaces

Sep. 29, 2022 —Physicists are using small wheeled robots to better understand these indirect mechanical interactions, how they play a role in active matter, and how ...

MICROSCOPE Mission Presents Most Precise Test of General Relativity's Weak Equivalence Principle

Sep. 14, 2022 —Researchers present the most precise test yet of the weak equivalence principle, a key component of the theory of general relativity. The report ...

A Step Towards Quantum Gravity

Aug. 12, 2022 —Solving Einstein's equations by using quantities that apply across all space and time coordinates could enable physicists to eventually find their 'white whale': a quantum theory of ...

Defending the Validity of Stokes-Einstein Equation in Living Systems

July 13, 2022 —New research defends the validity of the Stokes-Einstein equation, one of Albert Einstein's most famous equations, as it relates to biology. The research will help scientists better understand ...

Researchers Remeasure Gravitational Constant

July 12, 2022 —Researchers have redetermined the gravitational constant G using a new measurement technique. Although there is still a large degree of uncertainty regarding this value, the new method offers great ...

Detecting New Particles Around Black Holes With Gravitational Waves

June 7, 2022 —Clouds of ultralight particles can form around rotating black holes. A team of physicists now show that these clouds would leave a characteristic imprint on the gravitational waves emitted by binary ...

Research Breakthrough Means Warp Speed 'Unruh Effect' Can Finally Be Tested in Lab Settings

May 9, 2022 —A major hurdle for work at the forefront of fundamental physics is the inability to test cutting-edge theories in a laboratory setting. But a recent ...

Invisible Helium Atoms Provide Exquisitely Sensitive Test of Fundamental Theory

Apr. 8, 2022 —Physicists have developed the most sensitive method ever for measuring the potential energy of an atom (within a hundredth of a decillionth of a ...

Moon's Orbit Proposed as a Gravitational Wave Detector

Mar. 17, 2022 —Researchers propose using the variations in distance between the Earth and the Moon, which can be measured with a precision of less than a centimeter, as a new gravitational wave detector within a ...