Upcoming Colloquium
How much can we 'see' with a single quantum of light at the LHC? 2 pm, Wednesday, October 25, 2017 Prof. Amal Kumar Raychaudhury Lecture Hall
The Large Hadron Collider (LHC) at the European Particle Physics Laboratory, CERN, is a proton proton collider. At present it is colliding proton on proton at a center of mass energy of 13 TeV. Two experiments, the CMS and the ATLAS,looking at the collision data, are designed to search for new particles in the multi TeV energy range and new forces whose effects may be observed at a length scale of 10^-18 meters. With the discovery of the Higgs boson at the LHC, the Standard Model (SM) of particle physics is experimentally established and a new era of particle physics has started. The central question that the LHC is trying to address today, is - what is beyond
Standard Model? In the hunt for new physics beyond standard model one
of the most exciting possibility is can LHC produce the particles of dark matter, if dark matter is indeed made up of some fundamental particle? In this talk I will give an overview of the ongoing search for new physics at the LHC. I will discuss in some detail how one looks for dark matter at the LHC, using as example one very clean final state in which there will be only one photon seen in the CMS. Magnetizing the Universe 2 pm, Wednesday, November 1, 2017 Prof. Amal Kumar Raychaudhury Lecture HallThe universe is magnetized on all scales probed so far, from planets and stars to micro Gauss strength large scale fields in galaxies and galaxy clusters. Recent observational evidence suggests that even the intergalactic medium in voids could host a weak femto Gauss magnetic field, coherent on Mega parsec scales. How did the Universe get magnetized? We discuss how the first seed magnetic fields could arise in the early Universe or in astrophysical batteries. These need to be amplified and maintained by cosmic dynamos in collapsed objects, which convert the kinetic energy of motions to magnetic energy. The basic idea behind such dynamos and the challenges they encounter are described. It is relatively easy for magnetic energy to grow, but explaining the spatio-temporal coherence of cosmic magnetic fields remains challenging.
A L L A R E W E L C O M E ! | About The Speaker  Prof Satyaki Bhattacharya is a professor at the Saha institute of Nuclear Physics working on experimental high energy physics. About The Speaker  Prof Kandaswamy Subramanian is a professor at IUCAA working on magnetic fields in the cosmos. |
Wednesday lecture series
Department
of Physics, Presidency University organizes weekly lectures by
eminent scientists across the globe where they talk about latest and
cutting edge research and ideas. As a unique academic event in the
country, this sets the stage for interaction with researchers from a
diverse background in Physics and even outside of it. The lectures
are supposed to be held on each Wednesday generally in the
afternoon depending on the availability of the speakers.