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Abstract for Next Colloquium

March 18, 2019
11:15am in PH1-223
Refreshments in HSCI-224 from 10:45-11:05am

Kev Abazajian - UC Irvine

Cosmological Neutrinos

Cosmology has entered a precision era, allowing to make inferences of the constituency of the Universe to the sub-percent level on quantities like the density of matter. The density of light, relativistic components like neutrinos can also be inferred, so that limits on the mass of the neutrinos are an order of magnitude stronger from cosmology than the laboratory, albeit with some important caveats. The neutrino sector could hold some surprises, including dark/sterile species that may constitute the dark matter. An unexplained line in X-ray astronomy may indicate a signal of this sort of dark matter, which has initiated several follow-up astronomical and laboratory searches.

Figure above: Neutrinos are the second most abundant known particle in the Universe. A special, sterile, neutrino could be the dark matter and may be seen in X-ray observations.

The Colloquium is a unique opportunity for students to learn about new developments in physics and what physicists do after they graduate. Hosted by the Department of Physics and Astronomy at California State University Long Beach, the weekly meetings invite guests from universities, research laboratories, and industry to present and discuss current topics in physics. All students are encouraged to attend for a well-rounded experience and training in physics.


The following Colloquia are on Mondays at 11:15am in PH1-223 unless otherwise noted.

Date Title Speaker and Affiliation
March 25, 2019 Distinguished Lecture (technical). Probing topological protection of Bismuth nanowire hinge states. 11:00am in PH1-223 Sophie Guéron, Laboratoire de Physique des solides, Orsay France
March 27*, 2019 Distinguished Lecture (general). Probing topological protection of Bismuth nanowire hinge states. 10:00am in HSCI-100 Sophie Guéron, Laboratoire de Physique des solides, Orsay France
April 8, 2019 (TBD - Field: Experimental Condensed Matter Physics) Chris Regan, UCLA
April 15, 2019 Sequencing DNA with Single Molecule Electronics Phil Collins, UC Irvine
April 22, 2019 (TBD - Field: Experimental Condensed Matter Physics) Ni Ni, UCLA
April 29, 2019 (TBD - Field: Condensed Matter Physics Theory) Rosa di Felice, USC
May 6, 2019 Student Presentations I Students, CSU Long Beach
May 8*, 2019 Student Presentations II Students, CSU Long Beach

*These Special Colloquia fall outside of the regularly scheduled Monday talks.

Previous Colloquia

The following are Colloquia from this semester. The Colloquium Archive has the Colloquia from previous semesters.

Date Title Speaker and Affiliation
March 11, 2019 Towards Rapid Sequencing of Individual DNA Molecules in Graphene Nanogaps Henk Postma, CSU Northridge
March 4, 2019 Innovative Approaches in mm-Wavelength Cosmology: From Inflation to the Epoch of Reionization and Beyond Abigail Crites, Caltech
February 20, 2019 The Anomalous Origin of Polymer Enhanced Oil Recovery Shima Parsa, Harvard
February 18, 2019 Physics of Knots in Stretched DNA Alexander Klotz, MIT
February 13, 2019 Visualizing brain chemistry using optical nanomaterials Jackson Travis Del Bonis-O'Donnell, UC Berkeley
February 11, 2019 Optical Imaging with Super-resolution and Light Sheet Microscopy to Unravel Transient Processes in Live Cells, Tissues and Organisms Per Niklas Hedde, UC Irvine
February 4, 2019 Materials Science, Where Chemistry and Physics Meet Shahab Derakhshan, CSU Long Beach
January 28, 2019 Improving Tests of Quantum Entanglement by using Light from Distant Quasars Jason Gallicchio, Harvey Mudd College


We acknowledge with gratitude donations and support from the following present sponsors:

  • H.E. and H.B. Miller and Family Endowment
  • Benjamin Carter
  • The American Physical Society
  • Anonymous

We also acknowledge with gratitude our past donors: The Forty-Niner Shops, Inc., The Northrop Grumman Foundation, Sandra Dana, Anonymous.

If you wish to support the Colloquium, please contact the colloquium coordinator or the department chair. Thank you!