Racah colloquium

image can not be displayed

Physics Colloquium : "How Particle Theorists Can Help With Gravitational-Wave Predictions"

Mon, 23/12/2019 - 12:00 to 13:30

Location: 
Levin building, Lecture Hall No. 8

Lecturer: Zvi Bern
Abstract:
The remarkable detection of gravitational waves by the LIGO/Virgo
collaboration has opened a new window into the cosmos. In this
colloquium, we explain how particle theorists can help out with
high-precision calculations relevant for gravitational-wave emission
from compact astrophysical objects. We describe theoretical tools
such as the duality between color and kinematics, double-copy
relations and generalized unitarity. We explain how these ideas can

image can not be displayed

Physics Colloquium : "Direct measurement of superconducting stiffness and its implications"

Mon, 09/12/2019 - 12:00 to 13:30

Location: 
Levin building, Lecture Hall No. 8

Lecturer: Amit Keren, Technion
Abstract:
The London equation states that in a superconductor the current density is proportional to the vector potential. The proportionality constant is called stiffness. We present a new method

image can not be displayed

Physics Colloquium : "Signatures of non-equilibrium statistical physics in optically driven colloidal suspension."

Mon, 30/12/2019 - 12:00 to 13:30

Location: 
Levin building, Lecture Hall No. 8

Lecturer: Prof. Yael Roichman from Tel-Aviv University
Abstract:
Colloidal suspensions are ideal for the experimental study of statistical mechanics, since they allow characterization both on the single particle level and on the ensemble level. Using optical tweezers we are able to drive these suspensions out of equilibrium in different ways and in a controlled manner to study the characteristics of different non-equilibrium steady states (NESS). We compare and contrast these different experiments to look for universal traits of such NESS.