Presented By: Leinweber Center for Theoretical Physics
HET Seminar | A Step in Understanding the Hubble Tension
Neal Weiner (NYU)
Precision cosmology has now allowed us to study whether the simple LCDM model agrees with data. Interestingly, a tension has arisen between measurements of the Hubble Parameter - how fast the universe is expanding - from the recent universe compared with values extracted from the early universe. I will discuss this tension and some ideas of how to address it requiring physics beyond LCDM. In particular, I will discuss models with a light (~eV) mass threshold as a means to address the tension and the possibility of testing these ideas in the future.
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