Research Area

Nonequilibrium Statistical Mechanics and Dynamical Systems Theory

• Stochastic thermodynamics: Applications in Chemical reaction networks, Chemical computations, Finite-time computation
• Soft condensed matter: Study of properties of simple fluids using the aids of dynamical systems theory
• Transport phenomena: Spontaneous and driven transport over energy and entropy barriers
• Climate science: Linkage between climate change and economy, Stochastic and dynamical modifications to Integrated Assessment Model

Research Interests

The purpose of science is to understand our surroundings in a logical manner and apply this realization for the benefits of mankind. Broadly speaking, we aim to understand important and interesting natural processes; i.e., physical, chemical and biological functions, using statistical mechanical tools and dynamical systems theory and design efficient systems to perform the desired actions using the same. The first part of our research activity contributes towards basic sciences and the second part to technology.

Almost all natural processes occur through nonequilbrium paths and consequently, are subject to fluctuations. Therefore, it is very important to study the roles and properties of fluctuations to understand characteristic natural phenomena. The general research interest of the group is to perform proper analysis of fluctuations related to natural processes and also to figure out efficient control of fluctuations to design useful systems to carry out some intended functions. Currently our specific interests are on the study of chemical reaction networks and chemical computations from the perspective of stochastic and information thermodynamics, optimization of finite-time computation, transport over energetic and entropic barriers, study of simple fluids from the viewpoint of dynamical systems theory, and exploring the linkage between global warming and economy to propose better strategies to control climate change.

Representative Publications

• Moupriya Das and Holger Kantz, "Role of thermal fluctuations in biological copying mechanisms", Physical Review E 103, 032110 (2021).
• Moupriya Das and Holger Kantz, "Stochastic resonance and hysteresis in climate with state-dependent fluctuations", Physical Review E 101, 062145 (2020).
• Moupriya Das and Jason R. Green, "Critical fluctuations and slowing down of chaos", Nature Communications 10, 2155 (2019).
• Moupriya Das and Jason R. Green, "Self-averaging fluctuations in the chaoticity of simple fluids", Physical Review Letters 119, 115502 (2017).
• Moupriya Das, "Capturing the Landauer bound through the application of a detailed Jarzynski equality for entropic memory erasure", Physical Review E 90, 062120 (2014).

Recent Publications

• Ludvico T. Giorgini, Ralf Eichhorn, Moupriya Das, Woosok Moon, John S. Wettlaufer, "The Thermodynamic Cost of Erasing Information in Finite-time" (submitted) arXiv preprint arXiv:2206.02064 (2022).
• Moupriya Das and Holger Kantz, "Logical response induced by temperature asymmetry", Physical Review E 100, 032108 (2019).