Events Archive

Many-body ground states and collective excitations in a tunable 2D system
Tue, Nov 8, 2022, 12:30 pm1:30 pm

The Landau levels of a two-dimensional electron system support a plethora of fascinating many-body ground states and collective low-energy excitations, thanks to enhanced electron-electron interactions and the characteristics of the LL wave functions. The n=1 LL is particularly fascinating as it hosts even-denominator fractional quantum Hall…

Speaker

Dark Cosmos - Count your halos
Tue, Jan 31, 2023, 4:00 pm5:00 pm

One of the strongest predictions of the standard cold dark matter paradigm is the hierarchy of structure down to Earth-mass scales.  However, individual self-bound clumps of dark matter--"halos"--are difficult to detect directly.  Instead, we use galaxies as lampposts for halos.  By counting galaxies, we can measure the…

Speaker

Faculty, Postdocs, graduate students
Hybrid Semiconductor-Superconductor devices: a quest to find elusive Majoranas - Marco Valentini, IST Austria
Mon, Jan 30, 2023, 2:00 pm3:00 pm

In 1937, Ettore Majorana suggested that a particle, which is its own antiparticle might exist. This triggered the interest of high-energy physicists, but, despite the big efforts, there is no evidence of such a particle [1]. In condensed matter, a quasiparticle with such property can be created, i.e. a Majorana zero mode (MZM). MZMs are non…

Faculty, post docs, grads
Special Seminar: " XXZ interactions for entanglement-enhanced sensing in atomic and solid-state spin ensembles"
Tue, Jan 24, 2023, 2:00 pm3:00 pm

Controlling many-body entanglement promises to yield both fundamental insights and practical advances. In particular, generating squeezed states for entanglement-enhanced metrology is an important near-term application of quantum systems. In past work, squeezing has been achieved in a clean, controlled setting using all-to-all Ising…

Speaker

Faculty, Postdocs, graduate students
HET Seminar |Sanjay Moudgalya, Caltech| “ Unconventional Symmetries from Commutant Algebras ” | PCTS & Zoom
Mon, Jan 23, 2023, 2:30 pm2:30 pm

The study of symmetry lies at the heart of various parts of physics. In equilibrium physics, symmetries are useful in classifying phases of matter and in non-equilibrium physics, they are necessary to understand the phenomenon of thermalization. Most symmetries conventionally studied in the literature are examples of so-called on-site unitary…

Speaker

University Closed
Mon, Jan 16, 2023, 8:30 am9:30 am
Special Seminar: "Designing quantum matter in two dimensions"
Wed, Jan 4, 2023, 11:00 am12:00 pm

Experimental condensed matter research is undergoing a revolution. Before, the need for 3D crystalline samples with a given structure and doping set stringent requirements for realization of the desired properties. Now, it is possible to create tunable 2D samples in the lab, overcoming the previous limitations and speeding up the research. Here…

Speaker

Faculty, Postdocs, graduate students
Special Seminar: "Hofstadter states and re-entrant charge order in a semiconductor moiré lattice"
Tue, Jan 3, 2023, 11:00 am12:00 pm

Abstract: In this talk, I will present local electronic compressibility measurements on a twisted transition metal dichalcogenide heterobilayer, which reveal a rich phase diagram of Hofstadter states and novel electron crystalline orders. We show that this reflects the coexistence of both flat and dispersive moiré bands whose…

Speaker

Faculty, Postdocs, graduate students
University Closed
Mon, Jan 2, 2023, 8:30 am10:00 am
University Closed
Fri, Dec 30, 2022, 8:30 am10:00 am
University Closed
Mon, Dec 26, 2022, 8:30 amTue, Dec 27, 2022, 9:30 am
IAS HET Seminar | Isabel Garcia Garcia, Institute for Advanced Study| “TBA” | Bloomberg Lecture Hall & Zoom
Fri, Dec 16, 2022, 1:45 pm1:45 pm

Speaker

Hamilton Colloquium Series, Kaushik Bhattacharya, Caltech, "Liquid Crystals Meet Elastomers"", Jadwin A-10
Tue, Dec 13, 2022, 4:00 pm5:00 pm

Liquid crystal elastomers are rubbery solids with liquid crystal mesogens incorporated into their polymer chains.  These solids combine the entropic elasticity of rubber with the orientational phase transitions of liquid crystals.  The deformation and orientational order are coupled, giving rise to a rich variety of phenomena…

Speaker

A free lecture open to the public.
Harmonic Analysis of the Stochastic Gravitational Wave Background - Kim Boddy - University of Texas
Tue, Dec 13, 2022, 4:00 pm5:30 pm

Abstract: A stochastic gravitational wave background (SGWB) is expected to be generated from a population of unresolved sources and potentially from early Universe processes. In the nHz band, supermassive black hole binaries generate a SGWB, and there have been hints that a detection of the SGWB by pulsar timing arrays (PTAs) may be on the…

Faculty, post docs, grads
Biophysics Seminar: Na Ji, UC Berkeley| Imaging the brain at high spatiotemporal resolution
Mon, Dec 12, 2022, 12:30 pm1:30 pm

To understand computation in the brain, one needs to understand the input-output relationships for neural circuits and the anatomical and functional properties of individual neurons therein. Optical microscopy has emerged as an ideal tool in this quest, as it is capable of recording the activity of…

Speaker

A free lecture open to the public.
PGI Seminar Series Fall 2022|Georgios Mavrogiannis|Rutgers University "Relatively Non-Degenerate Estimates on Kerr de Sitter Spacetimes"
Mon, Dec 12, 2022, 12:30 pm1:30 pm

"We will start discussing a new method of how to prove exponential decay for the solutions of the wave equation on a Schwarzschild de Sitter black hole spacetime by exploiting a novel "relatively non-degenerate" estimate. This estimate does not degenerate at trapping. The main ingredient in proving this estimate is to commute with a novel…

Faculty, Postdocs, graduate students
Special Seminar w/Dicke candidate Cyndia Yu (Stanford): "Large-Scale Observations of the Cosmic Microwave Background"
Thu, Dec 8, 2022, 10:00 am10:00 am

Speaker

Physics faculty, post docs, grads
Special Seminar w/Dicke candidate Hongyuan Li (UC Berkeley): "Imaging Correlated Quantum Phases in van der Waals Heterostructures"
Thu, Dec 8, 2022, 9:00 am10:00 am

Speaker

Physic faculty, post docs, grads
Condensed Matter Seminar
Tue, Dec 6, 2022, 12:30 pm1:30 pm

Title/Abstract TBA

Speaker

Simulatable models of Quantum Criticality in Heavy Fermion Systems - Tarun Grover
Tue, Dec 6, 2022, 12:00 pm1:00 pm

Abstract: The fermion sign problem tends to stymie exploration of
highly entangled phases of fermions, such as those relevant for heavy
fermion quantum criticality. In this talk, I will present recent
progress in simulating Fermi and non-Fermi liquids in the context of
Kondo lattice systems. One of the new ideas is…

Faculty, Postdocs, graduate students