Dr. E. A. Gopalakrishnan, Assistant Professor (SG) at Amrita Center for Computational Engineering and Networking (CEN), Coimbatore, published his article, titled "Experimental investigation on preconditioned rate induced tipping in a thermoacoustic system", in Nature Scientific Reports (IF > 5.5). The paper is a collaborative work between Amrita, IIT Madras and Potsdam Institute for Climatic Impact Research, Germany (PIK, Germany).

"I have no words to express my gratitude towards the management for the unconditional support and encouragement that I received. I pray to Chancellor AMMA for her blessings which is the sole reason for this success," said Dr. Gopalakrishnan.

The paper investigates how the preconditioned rate induces tipping in a thermoacustic system. Many systems found in nature are susceptible to tipping, where they can shift from one stable dynamical state to another. This shift in dynamics can be unfavourable in systems found in various fields ranging from ecology to finance. Hence, it is important to identify the factors that can lead to tipping in a physical system. Tipping can mainly be brought about by a change in parameter or due to the influence of external fluctuations. Further, the rate at which the parameter is varied also determines the final state that the system attains. In the paper, it is shown that a preconditioned rate induced tipping in experiments and in a theoretical model of a thermoacoustic system. A specific initial condition is provided (preconditioning) and the parameter is varied at a rate higher than a critical rate to observe tipping. It is found that the critical rate is a function of the initial condition. The study is highly relevant because the parameters that dictate the asymptotic behaviour of many physical systems are temporally dynamic.

Nature Scientific Reports is an online multidisciplinary, open access journal published by the Nature Publishing Group. Papers from all areas of natural and clinical sciences are published in the journal. The journal is abstracted and indexed in the Chemical Abstracts Service, PubMed, MEDLINE and the Science Citation Index.

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