Seminars


  • Particles and Fields Seminar

    Universality driven analytic structure of QCD crossover

    Vladimir Skokov, North Carolina State University

    19 Apr 2021, 14:00 Zoom

  • Physics Colloquium

    Visualizing the Quantum Phases of Magic Angle Graphene

    Shahal Ilani, Weizmann Institute

    19 Apr 2021, 16:10 Zoom

  • Condensed Matter Seminar

    Floquet-engineered topological phases and probes of quantum matter

    Babak Seradjeh, Indiana University

    20 Apr 2021, 18:00 Zoom *** Note the date/time change ***

Condensed Matter Theory

Electronic Transport in the Nano-Scale


Yigal Meir

The surprising emergence of a localized electronic state in a QPC, leading to the "0.7 anomaly".

As electrons are confined to smaller and smaller spaces, quantum effects and strong correlations among the electrons start to dominate the underlying physics. In this area of research we investigate how such effects influence the electronic properties of miniaturized devices, such as quantum dots (QDs) and quantum point contacts (QPCs), and how such devices can be used to enhance our understanding of quantum mechanics and many-body physics.

Condensed Matter Experimental

Magnetic Resonance on the single atom level


Yishay Manassen

above-silicon surface with carbide spots below tunneling junction and spin - spectrum

In the STM image shown, observed in our lab, we see some disordered white spots. The STM does not have chemical identification capability. Such chemical identification is observed macroscopically using macroscopic magnetic resonance – both of electrons and nuclei. We develop a magnetic resonance technique on the single atom level, observed via a Larmor frequency component in the tunneling current. We identify the type of atoms under the tip using their spectrum – for example the SiC hyperfine spectrum. Preliminary results showed the observation of the nuclear transitions (NMR) with the STM.

Seminars


  • Particles and Fields Seminar

    Universality driven analytic structure of QCD crossover

    Vladimir Skokov, North Carolina State University

    19 Apr 2021, 14:00 Zoom

  • Physics Colloquium

    Visualizing the Quantum Phases of Magic Angle Graphene

    Shahal Ilani, Weizmann Institute

    19 Apr 2021, 16:10 Zoom

  • Condensed Matter Seminar

    Floquet-engineered topological phases and probes of quantum matter

    Babak Seradjeh, Indiana University

    20 Apr 2021, 18:00 Zoom *** Note the date/time change ***

Biological and Soft Matter Physics

Nonlinear Dynamics and Biological Applications


Arik Yochelis

Simulation of waves in a model for intra-cellular actin polymerization and membrane ruffles

Biological systems show a plethora of fascinating self-organized behaviors that range from organ to cellular levels, such as spiral waves, pulses, synchronization, and steady states that are periodic in space. These non-equilibrium phenomena emerge through either spontaneous or forced symmetry breaking mechanisms. Employing nonlinear dynamics methods, we attempt to understand specific cases (localized waves in the inner ear) as well as gain general insights into the emergence of traveling waves with motivation taken from molecular motors, actin polymerization and cardiac system.

High-Energy Physics

Fluid-Gravity Correspondence


Michael Lublinsky

Illustration of a collision of two gold nuclei at RHIC.

Quark Ggluon Plasma (QGP) is created in Heavy Ion Collisions at the Relativistic Heavy Ion Collider (RHIC) and LHC. A striking discovery of RHIC is that QGP produced there is strongly coupled and behaves like a nearly perfect fluid with relativistic hydrodynamics being an appropriate description of the observed phenomena. Remarkably, hydrodynamical properties of QGP could be studied using gravitational theory of Black Holes in curved five-dimensional spaces. The fluid/gravity correspondence relates graviton`s absorption by a Black Hole to dissipation taking place in the QGP.

Seminars


  • Particles and Fields Seminar

    Universality driven analytic structure of QCD crossover

    Vladimir Skokov, North Carolina State University

    19 Apr 2021, 14:00 Zoom

  • Physics Colloquium

    Visualizing the Quantum Phases of Magic Angle Graphene

    Shahal Ilani, Weizmann Institute

    19 Apr 2021, 16:10 Zoom

  • Condensed Matter Seminar

    Floquet-engineered topological phases and probes of quantum matter

    Babak Seradjeh, Indiana University

    20 Apr 2021, 18:00 Zoom *** Note the date/time change ***

Atomic, Molecular and Optical Physics

Quantum Interferences and Lasing without inversion


Reuben Shuker

Sub-natural-width peak

Quantum-interference-related phenomena have many implications in physics. Quantum interference between two independent quantum channels in three-level systems gives rise to various coherent phenomena, such as electromagnetically induced transparency (EIT), coherent population trapping (CPT), lasing/gain without inversion (LWI/GWI), enhancement of refraction index, sub- and super-luminal light propagation etc. These phenomena open a wide-range perspective for new type of phase-sensitive spectroscopy. An example is the possibility to get sub-natural line widths (see movie).

Astrophysics and Cosmology

Black Holes


Uri Keshet

Stellar trajectories around SgA*, the central black hole of the Milky Way

Black holes play a dual role in physics, both as astronomical objects routinely discovered nowadays in binaries and in galactic centers, and as basic elements in quantum gravity. The presence of a supermassive black hole in the center of our own galaxy is evident from the trajectories of stars around a small region known as SgA* (see movie). We study black holes such as the one hiding in SgA*, and their dense stellar environment.