Multiphonon excitations from dark matter scattering in crystals

Kavli Affiliate: Tom Melia | First 5 Authors: Brian Campbell-Deem, Peter Cox, Simon Knapen, Tongyan Lin, Tom Melia | Summary: For direct detection of sub-MeV dark matter, a promising strategy is to search for individual phonon excitations in a crystal. We perform an analytic calculation of the rate for light dark matter (keV $<m_{DM}<$ MeV) […]


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Petermann-factor limited sensing near an exceptional point

Kavli Affiliate: Kerry Vahala | First 5 Authors: Heming Wang, Yu-Hung Lai, Zhiquan Yuan, Myoung-Gyun Suh, Kerry Vahala | Summary: Non-Hermitian Hamiltonians describing open systems can feature singularities called exceptional points (EPs). Resonant frequencies become strongly dependent on externally applied perturbations near an EP which has given rise to the concept of EP-enhanced sensing in […]


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Language Grounding through Social Interactions and Curiosity-Driven Multi-Goal Learning

Kavli Affiliate: Peter Ford | First 5 Authors: Nicolas Lair, Cédric Colas, Rémy Portelas, Jean-Michel Dussoux, Peter Ford Dominey | Summary: Autonomous reinforcement learning agents, like children, do not have access to predefined goals and reward functions. They must discover potential goals, learn their own reward functions and engage in their own learning trajectory. Children, […]


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