QLS Seminar - Wednesday, 22 October at 11h00 "Controlling collective phases via Subsystem Resetting in many-body interacting systems" by Anish Acharya, TIFR Mumbai

[Quantitative Life Sciences]

Dear All,

On Wednesday, 22 October at 11:00 CET, Dr. Anish Acharya (Dept. of 
Theoretical Physics, Tata Institute of Fundamental Research, Mumbai) 
will give a seminar titled:

*"Controlling collective phases via Subsystem Resetting in many-body 
interacting systems**"

*For practical applications, one is often interested in interacting 
systems in a phase which is thermodynamically unstable in parameter 
regimes of interest. In traditional approaches, such phases are 
stabilised through intervening in the dynamics of all system 
constituents or introducing additional interactions. In this work, we 
present an alternative approach for stabilising and systematically 
manipulating phases in the context of many-body interacting systems, 
namely, subsystem resetting. The idea is simple: only a chosen subpart 
of the full system is stochastically reset to a fixed configuration, 
while the rest of the system evolves freely, and we ask what happens to 
a specific order parameter at steady state. This avoids global 
interventions and fine-tuning of couplings. We have applied this 
protocol across a wide variety of models, namely, mean-field spin models 
and the noisy Kuramoto oscillator system. In this talk, after discussing 
the protocol, I will focus on the application to Kuramoto oscillators 
and one of the spin models. I will demonstrate how resetting a subpart 
can have robust control of the phase diagram of the original model for 
the rest of the system, by adjusting the reset frequency, subsystem 
size, and reset configuration. These results open up a versatile 
framework for stabilising or suppressing targeted phases in complex 
interacting systems.

The seminar will take place in the Common area, Old SISSA building, 
second floor - Via Beirut, 2

Indico: https://indico.ictp.it/event/11201/

** You are all most welcome to attend!

Best regards,

  Erica



Erica Sarnataro
Group Secretary
Quantitative Life Sciences
The Abdus Salam International Centre for Theoretical Physics (ICTP)
Trieste,  Italy
Tel. +39-040-22404623 (NEW PHONE NUMBER)
www.ictp.it/research/qls.aspx
e-mail:qls at ictp.it