"The true being is eternal, having no cause. Its indicator is its effect. The presence of the effect arises from the presence of its cause." -- Kaṇāda
"The true being is eternal, having no cause. Its indicator is its effect. The presence of the effect arises from the presence of its cause." -- Kaṇāda
National Postdoctoral Fellow (NPDF)
Theoretical Physics, School of Physical Science
Indian Association for the Cultivation of Science
Email: spssr3457[at]iacs.res.in (Office)
sibaramruidas[at]gmail.com (Personal)
Short Vitae
Postdoctorate from International Centre for Theoretical Science, Bangalore (2025)
Doctorate from Indian Institute of Science, Bangalore, Karnataka (2023)
Masters from IIT Madras, Chennai, Tamil Nadu (2016)
Undergraduate from Midnapore College, Midnapore, West Bengal (2014)
Every day, the rapidly evolving field of Condensed Matter Physics is getting enriched by new interesting studies of novel materials. Using solvable analytical techniques and state-of-the-art numerical methods, fascinating properties are being revealed. My research broadly focuses on understanding the complex equilibrium and non-equilibrium dynamics of classical and quantum systems under various probes.
During my PhD, I worked on many-body chaos, arguably an essential ingredient behind the thermalization of a non-integrable system, to find its thermal dependence across phase transitions and role in transport. A subtle connection between the quantum measurement-induced transitions and a classical many-body chaotic transition can be established, which was also explored in my thesis. While in ICTS as postdoc, we looked at the quest to understand the crossover from intebrable behavior to onset of chaotic due to interacting quasiparticles. Currently, I am focusing on driven quantum systems and their intrguing dynamics across various exotic phase transitions.
Ruidas, S., Roy, S., Bhattacharjee, S., & Moessner, R., How many-body chaos emerges in the presence of quasiparticles. (arXiv:2601.05238)
Ruidas, S., & Banerjee, S. (2024). Classical limit of measurement-induced transition in many-body chaos in integrable and non-integrable oscillator chains. Phys. Rev. Lett. 132, 030402 (arXiv:2210.03760).
Ruidas, S., & Banerjee, S. (2021). Many-body chaos and anomalous diffusion across thermal phase transitions in two dimensions. SciPost Physics, 11(5), 087 (arXiv:2007.12708).