Undergraduate

NPA Zoom Seminar, Stefania Amodeo, Cornell University, "Halo gas thermodynamics from the CMB: results from the Atacama Cosmology Telescope DR5"

The thermodynamic properties of the ionized baryons in galaxies, groups, and clusters encode the effects of the assembly history and feedback processes that shape galaxy and cluster formation. These properties can be studied through the imprints that the scattering of cosmic microwave background (CMB) photons off the free-electron gas in galaxies and clusters leave on high resolution CMB maps: the thermal and kinematic Sunyaev-Zel’dovich effects.

Undergraduate Research Fair 2020

The undergraduate research fair is an annual event which seeks to facilitate undergraduates with a physics interest to obtain research positions and to facilitate faculty in their search for capable undergraduate researchers. Faculty with primary and secondary appointments are invited.
Hosts: Nikhil Padmanabhan (DUS) and Karsten Heeger (Department Chair)
Join from PC, Mac, Linux, iOS or Android: https://yale.zoom.us/j/96745497003?pwd=S0Uva29kWFM4dm5NWE9vbmd6Mkovdz09

Wright Lab All Hands Meeting, Karsten Heeger, "Planning for DEI action"

Members of the Wright Lab community are invited to join to discuss and provide input to the department’s DEI action plan at the all-hands meeting time of 9:30 on Monday, October 12. The action plan has been developed by the Physics DEIAP writing group and the department’s APS-IDEA team, together with the CDC and the department community.

WIDG Seminar: Yunpeng Ji, Yale University, "Many-body Physics with Ultracold Homogeneous Fermi Gases"

From superconductors, quark–gluon plasmas to neutron stars, interacting fermions are at the center of some of the most important problems in modern physics. The realization of degenerate Fermi gases with ultracold atoms has offered a versatile platform to experimentally investigate some of those problems, with unprecedented tunability of inter-particle interactions and trapping geometries. In particular, novel programmable light sculpting devices have enabled us to trap atoms in a uniform box potential, thus realizing the textbook homogeneous Fermi gas.

Kuheli Dutt Seminar: “Diversity, Equity, and Inclusion: Addressing Systemic Racism in STEM”

STEM fields tend to lack diversity, with minorities (women, people of color, LGBTQ+ individuals) facing challenges and typically leaving these fields at higher rates than majority groups. In the geosciences, racial diversity has not increased in the past forty years. The less diverse a field, the greater the reliance on stereotypes and implicit biases, which in turn disproportionately impacts marginalized groups.

WIDG Seminar: Carl Rethmeier, Carleton University: "Measurement of Alpha-Decaying Backgrounds and the Search for 5.5 MeV Solar Axions in DEAP-3600"

DEAP-3600 is a liquid argon (LAr) based spin-independent direct dark matter search experiment. It is designed to detect nuclear recoils induced by the elastic scattering of weakly interacting massive particles (WIMPs) on argon nuclei. Last year, DEAP-3600 reported its second physics result that included the best reported upper limit on the WIMP-nucleon spin-independent cross section on a LAr target of 3.9×10^−45 cm^2 for a 100 GeV/c^2 WIMP mass at 90% C. L.

WIDG Seminar: Chitres Guria, Yale University, "Topological structures and dynamics in an optomechanical system with exceptional points"

A system whose time evolution is linear, i.e. dx/dt= -iH.x, shows non-trivial topological structures and dynamics when the effective Hamiltonian H is allowed to be any complex matrix, which includes all Hermitian and non-Hermitian matrices. Previous works have investigated a system of two optomechanically coupled oscillators, described by a non-Hermitian 2x2 effective Hamiltonian H parametrized by two independent control parameters.

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