Date | Event Type | Speaker | |
03/01/2024 | Hep Th Discussion Group | Popov [ + ] | |
03/01/2024 | HEP Discussion Sessions | Zare [ + ] | |
03/04/2024 | CCPP Brown Bag | Gabriel Cuomo [ + ] | |
03/04/2024 | Informal HEP Talk | Thomas Steingasser [ + ] | |
03/04/2024 | Informal HEP Talk | Fiona Seibold [ + ] | |
03/05/2024 | Astro Seminar | Ben Farr [ + ] | |
03/05/2024 | Grad Pheno Journal Club | [ + ] | |
03/06/2024 | ArXiv Discussion | HEP/Pheno Journal Club [ + ] | |
03/06/2024 | HEP Seminar | Luca Delacrétaz [ + ] | |
03/08/2024 | Hep Th Discussion Group | Popov [ + ] | |
03/08/2024 | Informal HEP Talk | Federico Ambrosino [ + ] | |
03/08/2024 | HEP Discussion Sessions | Zare [ + ] | |
03/11/2024 | CCPP Brown Bag | Cameron Norton [ + ] | |
03/12/2024 | Astro Seminar | Adrian Bayer [ + ] | |
03/12/2024 | Grad Pheno Journal Club | [ + ] | |
03/13/2024 | HEP Seminar | Claudio Andrea Manzari [ + ] | |
03/14/2024 | EPP Job Talk | Tova Holmes [ + ] | |
03/14/2024 | Informal HEP Talk | Xingyang Yu [ + ] | |
03/14/2024 | Physics Dept Colloquium | Abhay Narayan Pasupathy [ + ] | |
03/15/2024 | Hep Th Discussion Group | Popov [ + ] | |
03/19/2024 | Grad Pheno Journal Club | [ + ] | |
03/20/2024 | ArXiv Discussion | HEP/Pheno Journal Club [ + ] | |
03/22/2024 | Hep Th Discussion Group | Popov [ + ] | |
03/22/2024 | Informal HEP Talk | Alon Farragi [ + ] | |
03/22/2024 | Informal HEP Talk | Chris Hull [ + ] | |
03/25/2024 | CCPP Brown Bag | Neal Weiner [ + ] | |
03/25/2024 | Informal HEP Talk | Bingrong Yu [ -- ] | |
Title: Axion dark matter from inflation-driven quantum phase transition Abstract: We propose a new mechanism to produce axion dark matter from inflationary fluctuations. Quantum fluctuations during inflation are strengthened by a coupling of the axion kinetic term to the inflaton. This coupling acts as an order parameter, breaking the scale invariance of the axion power spectrum and driving a quantum phase transition. A red-tilted spectrum leads to an exponential enhancement of the axion abundance as the comoving horizon shrinks during inflation. This enhancement allows sufficient axion production to comprise the entire dark matter abundance, despite the ultralight mass. Our mechanism predicts a significantly different parameter space from the usual misalignment mechanism, allowing much larger couplings to Standard Model particles, which can be probed by future axion experiments. It is applicable to both QCD axion and axion-like particles. (2:00 PM - 3:00 PM, 726 Broadway, 940, CCPP Seminar) | |||
03/26/2024 | Astro Seminar | Ken Van Tillburg [ + ] | |
03/26/2024 | Grad Pheno Journal Club | [ + ] | |
03/27/2024 | HEP Seminar | Tony Gherghetta [ + ] | |
03/28/2024 | Physics Dept Colloquium | Arjun Yodh [ + ] | |
03/29/2024 | Hep Th Discussion Group | Popov [ + ] | |
03/29/2024 | Oral Defense | Reza Javadi Nezhad [ + ] | |
03/29/2024 | HEP Discussion Sessions | Zare [ + ] |