Joint CMSP-QLS seminar by Sumedha - Monday, 12 June 2023 at 11:00 CET - Multiple phase transitions in spin-1 models with quenched random fields

[Quantitative Life Sciences Section]

Dear All,

Today, 12 June  2023 at 11:00 CET, Sumedha (National Institute of 
Science Education and Research, Bhubaneswar, India ) will give a seminar 
titled:
*
Multiple phase transitions in spin-1 models with quenched random fields*

Abstract:
In this talk I will discuss two versions of the famous Blume Capel 
model, one with random crystal field disorder and another with random 
magnetic field disorder for infinite range interactions.
I will introduce a method based on the theory of large deviations to 
perform the disorder averaging. We find novel phase diagrams with new 
phases and multi-critical points like the critical end point, bicritical 
point and tetra critical point. I will also discuss a generalisation of 
the Blume-Capel model to p-spin interaction. This model with random 
crystal field disorder has a Gardner-like transition for finite p>=3.
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_The seminar will take place in the L. Stasi seminar room, Leonardo 
building__
_
Indico webpage: https://indico.ictp.it/event/10392

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. +39-040-2240623
www.ictp.it/research/qls.aspx
e-mail:qls at ictp.it