Physics Department Colloquia (September 28 through November 30) Tuesday, October 7 3:30 PM J. Kondev Colloquium: The Scale Invariant Cell Tuesday, October 14 3:30 PM C. Rodriguez Colloquium: Growing Big Black Holes in Dense Star Clusters Tuesday, October 21 3:30 PM K. Perez Colloquium: Probing the Dark Universe with X-ray Optics Tuesday, October 28 3:30 PM L. Fu Colloquium: Electrons in Pairs and Fractions: New Phases in 2D Quantum Materials Tuesday, November 4 3:30 PM C. Hill Colloquium: High-Precision CMB Power Spectra and Cosmological Constraints from the Atacama Cosmology Telescope Tuesday, November 11 3:30 PM K. Kechedzhi Colloquium: Towards practical quantum simulation with quantum echo Tuesday, November 18 3:30 PM N. Gedik Colloquium: TBD Tuesday, November 25 3:30 PM P. Harris Colloquium: Around the Forces in 80 Microseconds