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Arnab Sen

United Kingdom
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Articles

Few-femtosecond photoelectron spectroscopy reveals fundamental photodynamics of the carbon-carbon double bond in ethylene

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By Arnab Sen, Simon Neville, Martin Kretschmar, Martha Yaghoubi Jouybari, Rostyslav Danylo, Jose Andrade, Albert Stolow, Tamas Nagy, Michael S. Schuurman, Arnaud Rouzée, Marc J. J. Vrakking
| Nature Verified
Abstract Conjugated π-systems, often composed of carbon-carbon double bonds as key structural units, are among the most important organic chromophores and serve as prototypical systems for studying ππ* excitation. Their ultrafast excited-state dynamics govern the outcomes of fundamental photochemical processes, including vision, photoisomerization, photosynthesis, and solar energy conversion.
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Why 2026 Will Redefine Data Engineering as an AI-Native Discipline

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By Arnab Sen, President-Data Engineering
| CDO Magazine Verified
Industries are walking into 2026 with a mix of urgency and opportunity. Gartner predicts that by next year, AI agents will influence nearly half of all business decisions. That dramatically raises the stakes for data readiness. Over the past year, AI has moved from experimentation into real workflows, revealing a simple truth: an AI model is only as good as the data that powers it. Data engineering is no longer a backstage function.
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Activation Oracles: Training and Evaluating LLMs as General-Purpose Activation Explainers

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By Arnab Sen
arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.
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