events


Online Physics Seminar: Extreme-matter under the strongest magnetic fields in the universe, 14 August, 2020, 5:00 PM - 6:00 PM

Published on : 09-Aug-2020

We are hosting an online Physics seminar on Aug 14, 2020, by Prof. Victor Roy from NISER with the details below.

Title: Extreme-matter under the strongest magnetic fields in the universe.

Speaker:    Prof. Victor Roy

Affiliation:   NISER Bhubaneswar, India 

Day/Date:   Friday, Aug 14, 2020

Time:          17:00-18:00 Hrs (IST)
 

Abstract: Lorentz boosted heavy-ions produce the strongest magnetic fields in the universe in the collider experiments. 

I will talk about some of the implications that we expect from such an unprecedented combination of matter under extreme temperatures and intense magnetic fields.

About the speaker:

Victor has been a faculty member in the School of Physical Science at NISER Bhubaneswar since 2016. Prior to that, he had been at Frankfurt University as an Alexander von Humboldt Postdoctoral fellow (2014-16) and at Hua-Zhong Normal Univ  (2013-14). He obtained his Ph.D. degree from VECC Kolkata in 2012. 

His area of research is Strong interaction Physics and Relativistic Heavy-ion Collisions with research interests on Numerical relativistic hydrodynamics and magnetohydrodynamics, Transport coefficients of Quark-Gluon Plasma, Relativistic Transport models and Electromagnetic field in high energy heavy-ion collisions. 

To know more about the speaker, you can click on https://www.niser.ac.in/users/victor


Online Physics Colloquium : The Noise of Gravitons by Prof. Maulik Parikh, 10th August, 10.30 AM

Published on : 17-Jul-2020
We are organizing a colloquium (online via google meet) by Prof. Maulik Parikh from the Arizona State University on 10th August, 10:30 AM - 11:30 AM. (IST)

Title: The Noise of Gravitons

Abstract: If gravity is quantized, then gravitons exist. I will show that the bombardment of gravitons affects the motion of falling objects — by adding tiny fluctuations to their classical trajectories. Detection of these fluctuations (or “noise”) would provide evidence for the quantization of gravity and the existence of gravitons.

To attend the colloquium, I request you to kindly register using this google form: LINK

You may find further details in our physics colloquium page: https://www.iitgn.ac.in/academics/lectures/physics_colloquium


Black Hole Second Law from large D membranes

Published on : 10-Jan-2020
Dr. Arunabha Saha from the University of Geneva will be visiting us from 13th to 15th Jan 2020. He will be delivering a seminar on 14th January.
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The details are:

Time and Venue: 2:30 PM- 3:30 PM, Block 6/203

Title: Black Hole Second Law from large $D$ membranes 

Abstract: I will discuss the duality between black hole dynamics and co-dimension one membranes in the limit of spacetime dimensionality tending to infinity. I will then use this duality to find an entropy current on the membrane world volume which captures the second law for the dual black hole in the Einstein -Gauss-Bonnet gravity. I will work up to the second subleading order in 1/D where the non-trivial entropy production starts. This analysis will be up to linear order in the Gauss-Bonnet parameter. I will also present some initial results for a non-perturbative analysis in the GB parameter up to leading order in 1/D. 


Compact binary Coalescences: Constraints on waveforms

Published on : 09-Jan-2020
 Mr. Neev Khera, who is a Ph.D. student at Penn State University will be visiting us on 16th January. He will be delivering a seminar on 16th, the details are:

Venue and Time: Block 5/203, 4:00 PM - 5:00 PM

Title: Compact binary Coalescences: Constraints on waveforms

Abstract: Gravitational-wave detections of compact binary coalescences (CBCs) are reliant on accurate modeling.  With upcoming future detectors, our models must improve by orders of magnitude. Exact general relativity applied to compact binary coalescences (CBCs) gives constraints that the waveforms must satisfy. These constraints can then be used as qualitatively new checks on the accuracy of waveform models. In this talk, we see the derivation of these constraints using the Bondi-Metzner-Sachs (BMS) group and its associated balance laws in the context of CBCs. We also see applications of this work in understanding the issue of angular momentum ambiguities for CBCs in general asymptotically flat spacetimes.  
 





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