Polarization Signals from Universe’s First Light Emphasize Hubble Tension

In a new study, UC Davis researchers and their colleagues in the South Pole Telescope (SPT) collaboration used observational data of this first light — collected from the SPT located at the National Science Foundation’s Amundsen-Scott South Pole Station in Antarctica — to explore the theoretical underpinnings of the Lambda-cold dark matter model, the standard cosmological model of the Big Bang.

Manuel Calderón de la Barca Sánchez Returns to Alma Mater to Host ‘Secrets of the Universe’ Screenings

This week, Manuel Calderón de la Barca Sánchez returned to his alma mater in Mexico to host screenings of ‘Secrets of the Universe,’ an IMAX film that explores the formation of the universe through the eyes of Aggie researchers. Calderón de la Barca Sánchez, a UC Davis physics professor, hopes the film will inspire students to pursue STEM education and careers.

Removing the Arrow of Time from The Equation

In two new papers appearing in Physical Review Research, UC Davis and Los Alamos National Laboratory researchers introduce a new model to explain the phenomenon of decoherence, when a system’s behavior shifts from being explainable by quantum mechanics to being explainable by classical mechanics. The new model divorces the arrow of time from the go-to theoretical tool for understanding decoherence.