Tag

Physical Review Letters

All articles tagged with #physical review letters

space13 days ago•73 min saved

Listening for Darkness: Could Gravitational Waves Reveal Dark Matter's Signature

A new study proposes that dense dark-matter clouds around spinning black holes could imprint a detectable signal on gravitational waves produced by merging black holes. Researchers analyzed 28 LIGO/Virgo/KAGRA events and found one—GW190728—whose waveform may carry such an imprint, though not a definitive detection. If true, this could provide a new way to probe dark matter using upcoming gravitational-wave observations and detector improvements, with the results published in Physical Review Letters.

via Space|

#black-holes #dark-matter #gravitational-waves

science3 months ago•5 min saved

Two Beads, One Standing Wave: A Lab-Scale Time Crystal

NYU researchers demonstrate a classical time crystal using an acoustic standing-wave field to levitate and couple tiny polystyrene beads; through non-reciprocal scattering of sound, the beads self-sustain a temporal oscillation without external driving, making it the simplest possible time-crystal system and offering a macroscopic platform to study non-reciprocity. The findings are reported in Physical Review Letters.

via ScienceAlert|

#acoustic-levitation #non-reciprocal-interaction #physical-review-letters

physics2 years ago•2 min saved

"Discovery of a Novel Subatomic Particle Confirmed"

The BESIII collaboration has observed an anomalous line shape around the ppbar mass threshold in the J/ψ→γ3(π+π-) decay, indicating the existence of a ppbar bound state, with a new resonance X(1880) discovered near the ppbar mass threshold. The mass and width of X(1880) were determined to be 1882.1±1.7±0.7 MeV/c2 and 30.7±5.5±2.4 MeV/c, respectively, supporting the existence of a ppbar bound state. This result was published in Physical Review Letters and selected as "Featured in Physics."

via Phys.org|

#besiii-collaboration #nucleon-antinucleon-bound-state #physical-review-letters