Astronomy and Astrophysics Seminar: Cosmological Information in Forward Modeling of Biased Tracers
Giovanni Cabass (IAS).
I discuss how much information on cosmological parameters can be extracted from a perturbative bias model at the field level after marginalizing over initial conditions, compared with summary…
Astronomy and Astrophysics Seminar: Seeking solutions for the Hubble tension
Meng-Xiang Lin (Chicago)
Although the $\Lambda$CDM model has been remarkably successful in explaining a wide range of observational data, the model does not reconcile distance-redshift measurements when anchored at low redshift…
Condensed and Living Matter Seminar: "Quantum optics meets correlated electrons"
Mohammad Hafezi, University of Maryland
One of the key challenges in the development of quantum technologies is the control of light-matter interaction at the quantum level where individual excitations matter. During the past couple of decades…
From Foundations to Frontiers
Chinese American Contributions to the Fabric of America
Moderator: Prof. Andrea Liu
A special upcoming presentation and panel discussion for all members of the Penn community will be held virtually on October 19 at 4pm, featuring three members of the Penn faculty and the Committee…
Physics and Astronomy Colloquium: "Biological tissues as mechanical metamaterials"
M. Lisa Manning (Syracuse University)
Abstract: In multicellular organisms, properly programmed collective motion is required to form tissues and organs, and this programming breaks down in diseases like cancer. Recent experimental work…
HET Seminar: Gravitational Phenomenology of Dark Photon Production
Peter Adshead (University of Illinois at Urbana-Champaign)
Axion-like fields are ubiquitous in high-energy physics. Their symmetry properties also make them favored ingredients in many cosmological scenarios ranging from inflation to dark matter. The resonant,…
Astronomy and Astrophysics Seminar: Large Scale Structure Beyond the 2-Point Function
Oliver Philcox (Princeton)
Quantum fluctuations in inflation provide the seeds for the large scale distribution of matter today. According to the standard paradigm, these fluctuations induce density perturbations that are…
Condensed and Living Matter Seminar: "Interlayer Excitons and Magneto-Exciton Condensation in van der Waals Heterostructures"
Philip Kim, Harvard
A pair of electrons and holes across the interface of semiconductor heterostructure can form a bound quantum state of the interlayer exciton. In a coupled interface between atomically thin van der Waals…