The article discusses how modern cosmology, specifically the FLRW metric, can be derived using symmetry considerations, Newtonian Mechanics, and Thermodynamics, without the need for General Relativity.
A recent study proposes that the universe functions as a vast quantum gravity computer, processing information at the Planck scale at an incredible rate, potentially influencing how physicists view cosmic interactions and energy conservation.
A new model explains the small Higgs mass and the strong-CP problem by invoking a multiverse scenario. It predicts distinctive signals at hadronic EDM, fuzzy dark matter, and axion experiments.
Dark matter detectors designed to spot hypothetical dark matter particles have instead detected a signal from neutrinos produced by the sun. This 'neutrino fog' is both a milestone and a sign that these detectors may soon be overwhelmed by neutrinos, hindering their ability to detect dark matter.
This article presents a white paper summarizing current knowledge on quantum gravity phenomenology and its multi-messenger signals. It provides an overview of the field, discusses experimental and observational signatures, and identifies key questions and challenges.
Astrophysicists have detected subtle hints that the mysterious 'dark energy' that drives the universe's expansion may be slightly weakening over time.
