Department of Physics, Scottish Church College

30/06/2020

15/04/2020

Invitation to join QASTM seminar series:

Dear All,

I hope all of you are fine and doing well from your home. Stay safe and healthy. I am writing to let all of you now that tomorrow Johannes Knaute from GQFI Group of AEI is going to give a review talk in my QASTM group (Quantum Aspects of Space-Time and Matter) on "From spin chains to real-time thermal field theory using tensor networks [arXiv:1912.08836]" which is the second talk of this seminar series. The first talk of the forum was delivered by Prof. Jean Luc Lehners (The YouTube link: https://www.youtube.com/watch?v=rya4KvOifu4&t=2151s), our Theoretical Cosmology Group Leader from AEI, Potsdam. Now let me introduce to all of you about QASTM (https://www.facebook.com/groups/381445689157142/). This is an international non-profit research forum for all Master's students, Ph.D. students and Post Docs from any part of the world. The level of the talk should be for masters and Ph.D. students so that they can be really benefitted out of that. The talk will be recorded and posted on youtube for all so that those who have not attended can see the content of the talk. This effort is recently made by me to cheer all physics researchers in this critical situation worldwide due to coronavirus. I am cordially inviting you to join the talk and the upcoming all talks of QASTM seminar series. You guys are always free to give QASTM seminar series talks in the future. The talk will happen by zoom and the related link is the following:

Sayantan Choudhury is inviting all of you from the Cosmology Group to a scheduled Zoom meeting.

Topic: QASTM seminar series
Time: Apr 16, 2020 02:00 PM Amsterdam, Berlin, Rome, Stockholm, Vienna-> 05.30 PM India

Join Zoom Meeting
https://mpi-aei.zoom.us/j/93725285107…

Meeting ID: 937 2528 5107
Password: 036386
One tap mobile
+496971049922,,93725285107 #,, #,036386 # Germany
+493056795800,,93725285107 #,, #,036386 # Germany

Dial by your location
+49 69 7104 9922 Germany
+49 30 5679 5800 Germany
+49 695 050 2596 Germany
+1 301 715 8592 US
+1 312 626 6799 US (Chicago)
+1 346 248 7799 US (Houston)
+1 408 638 0968 US (San Jose)
+1 646 876 9923 US (New York)
+1 669 900 6833 US (San Jose)
+1 253 215 8782 US
Meeting ID: 937 2528 5107
Password: 036386
Find your local number: https://mpi-aei.zoom.us/u/ad6a8CXG5w

The title and abstract of the talk are appended below:

Title: From spin chains to real-time thermal field theory using tensor networks [arXiv:1912.08836]

Abstract:

One of the most interesting directions in theoretical high-energy and condensed matter physics is understanding dynamical properties of collective states of quantum field theories. The most elementary tool in this quest are re****ed equilibrium correlators governing the linear response theory. In this article we examine tensor networks as a way of determining them in a fully ab initio way in a class of (1+1)-dimensional quantum field theories arising as infra-red descriptions of quantum Ising chains. We show that, complemented with signal analysis using the Prony method, tensor network calculations for intermediate times provide a powerful way to explore the structure of singularities of the correlator in the complex frequency plane and to make predictions about the thermal response to perturbations in a class of non-integrable interacting quantum field theories.

Speaker: Mr. Johannes Knaute, GQFI Group, AEI, Potsdam, Germany.

Time: 14:00 pm to 15:30 pm (zoom talk)

I hope to see most of you tomorrow (if you are interested).

Best regards,
Sayantan Choudhury

Review talk on " Path Integral and Quantum Cosmology" by Professor Jean Luc Lehners from Max Planck Institue for Gravitational Physics, Potsdam, Germany for ...

18/01/2020

Random clicks during the performance of students in a play which they have written alone....Awesome performances by each one ..I have really enjoyed this play and watched at very nice performances after a long time....

18/01/2020

Reunion 2020 pics

17/01/2020

Some glimpses of my visit at Scottish Church College

04/05/2019

Let me introduce the group members of my newly formed research group "Quantum Aspects of Space-Time and Matter":
Prashali Chauhan, Asoka University, Delhi.
Arkaprava Mukherjee, IISER, Kolkata.
Abinash Swain, IIT, Gandhinagar.
Satyaki Chowdhury, NISER, Bhubaneswar.
Purnima Narayan, MPIG & University of Potsdam.
Vaishak Prasad, IUCAA, Pune.
Anjan Sarkar, RRI, Bengaluru.
Aman Kaushik , DTP, TIFR, Mumbai.
Yash Mohan Sharma, DNAP, TIFR, Mumbai.
Mahaveer Thalor, IMSC, Chennai and ICTS, TIFR, Bengaluru.
Sandipan Bhattacherjee, BIT, Mesra.
Tamal Chakraborty, NISER, Bhubaneswar.
Hardik Bohra, NIT, Rourkela.
Sourav Dey, NISER, Bhubaneswar.
Rajeev Singh, Cracow, INP, Poland.
Soham Choudhuri, Viswa Bharati.
Debopam Goswami, Scottish Church College, University of Calcutta.
Saif Ahmad, AKTU, Lucknow.
Prof. Sudhakar Panda , Director , IOP & NISER, Bhubaneswar.

Many more enthusiastic students are welcome to do summer projects, long term projects, Masters thesis project and PhD projects with me. Interested students directly contact in my following email id:
[email protected]

During application send your CV with the email. Interested students send applications as soon as possible.

Research topics are appended below:
1. Random Matrix Theory and its applications (including integrability).
2. Non-equilibrium aspects of Quantum Field Theory.
3. Open Quantum Systems and its applications in different areas of Theoretical Physics.
4. Quantum Entanglement and Information Theory.
5. Many-Body Quantum Field Theory.
6. Quantum Chaos, Scrambling, Butterfly Effect and physics of Out of time-ordered correlation function.
7. Quantum Thermodynamics.
8. Quantum Quench and its applications.
9. Path integral approaches in Thermal Field Theory and its applications.
10. Quantum dissipative system, Brownian motion and application to cosmology.
11. Stochasticity in Quantum Field Theory and its applications.
12. Particle physics and cosmology connection.
13. Thermodynamic Bethe Ansatz and its applications.
14. Effective Field Theory in Cosmology.
15. Bosonization in Quantum Field Theory.
16. Boson Fermion duality in Quantum Field Theory.
17. Scattering Amplitudes.
18. Quantum Cosmology and Lorentzian Path integral formulation using Picard Lifsh*tz Theory.
19. Non-linear Cosmological Perturbation Theory and Application to Large Scale Structure formation.
20. The idea of polytopes in Cosmology.
21. The idea of bootstrap in Cosmology.
22. Quantum Field Theory of De Sitter space.