Tuesday, December 8, 2020

Seminar by Anupam Mazumdar

 

Speaker: Anupam Mazumdar, University of Groningen
Place: The Cloud

Date: Tuesday, December 15th

Time: 9am


Join Zoom Meeting

https://lsu.zoom.us/j/6574388959?pwd=UlVxUzYrUHMvSW1GVUswSjVJc2I0QT09


Title: Witnessing Quantum gravity in a laboratory via miniaturist quantum accelerator

AbstractUnveiling the nature of spacetime remains one of the final frontiers of modern theoretical physics. I will discuss how to witness the quantum nature of gravity in a table-top experiment by creating the right witness involving the two neutral masses (spin embedded) undergoing through the Stern-Gerlach apparatus. I will discuss various challenges involved in pursuing the dream of witnessing graviton and the critical challenges. There are many challenges to be met and I will discuss the important ones: (1)  To create a macroscopic quantum superposition of heavy masses via the Stern-Gerlach setup while controlling the stray gravitational acceleration and the gravity gradient noise, (2) Precise constraints on the magnetic field/current such that various electromagnetic interactions are under control, (3) Vacuum dominated Casimir effect which will create the main background for the experiment, (4) Constraints on vacuum and temperatures, (5) Feasibility of the experiment in a drop-tower, (6) The material properties and patch potentials. I will briefly discuss time scales for realising such an accelerator which will witness for the first time the graviton in a terrestrial laboratory.

Subtitles (.vtt) (80kb)

Wednesday, March 18, 2020


Speaker: Alejandro Corichi, UNAM Morelia.




Place: Via Zoom.

Date: Thursday, March 19th.

Time: 10am

Title: TBA

Thursday, January 23, 2020

Group seminar by Jorge Pullin


Speaker: Jorge Pullin
Place: Digital Media Theater

Date: Thursday, January 9th

Time: 3:30pm

Title: Universality and scaling in the collapse of spherical scalar fields in semiclassical loop quantum gravity.