Weak equivalence principle violated in gravitational waves

Credit: Pixabay/CC0 Public Domain

The Weak equivalence principle (WEP) is a key aspect of classical physics. It states that when particles are in freefall, the trajectories they follow are entirely independent of their masses. However, it is not yet clear whether this property also applies within the more complex field of quantum mechanics. In new research published in EPJ C, James Quach at the University of Adelaide, Australia, proves theoretically that the WEP can be violated by quantum particles in gravitational waves—the ripples in spacetime caused by colossal events such as merging black holes.

As well as resolving a long-standing debate in quantum theory, Quach’s findings could lead to the development of advanced new materials, including fluids with infinite conductivity and zero viscosity. These could be used as advanced gravitational wave detectors and may even lead to devices which can mirror gravitational waves and harvest their energy. Quach based

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ASU journalism student sues, claiming university violated her First Amendment rights in fallout from controversial tweet

An Arizona State University journalism student is suing after she says she was removed from leading the student-run radio station over a controversial tweet.

a woman standing in front of a building: ASU's Walter Cronkite School of Journalism and Mass Communication in downtown Phoenix.

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ASU’s Walter Cronkite School of Journalism and Mass Communication in downtown Phoenix.

The suit names the Arizona Board of Regents, ASU, the Walter Cronkite School of Journalism and Mass Communication and Kristin Gilger, Cronkite interim dean.

The lawsuit claims that the university violated Rae’Lee Klein’s First Amendment rights to free expression by refusing to allow her to continue as station manager of Blaze Radio because of her tweet.

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The university, in a statement to The Arizona Republic on Tuesday, refuted that claim, saying, “Klein’s conduct in the aftermath of the tweet — rather than the tweet itself — meant that she was no longer able to perform the

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