Kavli Affiliate: Kyle Shen | First 5 Authors: Wei Shen, Wei Shen, , , | Summary: We study bilevel optimization problems where the lower-level problems are strongly convex and have coupled linear constraints. To overcome the potential non-smoothness of the hyper-objective and the computational challenges associated with the Hessian matrix, we utilize penalty and augmented […]
Kavli Affiliate: Edward Kolb | Summary:We study cosmological gravitational particle production (CGPP) in Higgs inflation, wherein the inflaton is a scalar field with quartic self-coupling $λ$ and a nonminimal coupling to gravity $ξ$, and which may, but need not be, the Higgs boson of the Standard Model (SM). We find an explosive particle production peaked […]
Kavli Affiliate: Edward W. Kolb | First 5 Authors: Tammi Chowdhury, Tammi Chowdhury, , , | Summary: We study cosmological gravitational particle production (CGPP) in Higgs inflation, wherein the inflaton is a scalar field with quartic self-coupling $lambda$ and a nonminimal coupling to gravity $xi$, and which may, but need not be, the Higgs boson […]
Kavli Affiliate: Yingjie Peng| First 5 Authors: PandaX Collaboration, PandaX Collaboration, , , | Summary:Nuclear $β$ decay, a sensitive probe of nuclear structure and weak interactions, has become a precision test bed for physics beyond the Standard Model, driven by recent advances in spectrometric techniques. Here we introduce tomographic $β$-$γ$ spectroscopy (TBGS) of nuclear $β$ […]
Kavli Affiliate: Risa Wechsler | Summary:Frontier AI agents show increasing promise as scientific research assistants, and may eventually be useful for extended, open-ended research workflows. However, in order to use agents for novel research, we must first assess the underlying faithfulness and correctness of their work. To evaluate agents as research assistants, we introduce ReplicationBench, […]
Kavli Affiliate: Risa Wechsler| First 5 Authors: Christine Ye, Christine Ye, , , | Summary:Frontier AI agents show increasing promise as scientific research assistants, and may eventually be useful for extended, open-ended research workflows. However, in order to use agents for novel research, we must first assess the underlying faithfulness and correctness of their work. […]
Kavli Affiliate: Eric Miller | Summary:We stack 3.75 Megaseconds of early XRISM Resolve observations of ten galaxy clusters to search for unidentified spectral lines in the $E=$ 2.5-15 keV band (rest frame), including the $E=3.5$ keV line reported in earlier, low spectral resolution studies of cluster samples. Such an emission line may originate from the […]
Kavli Affiliate: Biao Huang | Summary:Periodically driven quantum many-body systems exhibit a wide variety of exotic nonequilibrium phenomena and provide a promising pathway for quantum applications. A fundamental challenge for stabilizing and harnessing these highly entangled states of matter is system heating by energy absorption from the drive. Here, we propose and demonstrate a disorder-free […]
Kavli Affiliate: Biao Huang | Summary:Periodically driven quantum many-body systems exhibit a wide variety of exotic nonequilibrium phenomena and provide a promising pathway for quantum applications. A fundamental challenge for stabilizing and harnessing these highly entangled states of matter is system heating by energy absorption from the drive. Here, we propose and demonstrate a disorder-free […]
Kavli Affiliate: Rodriguez Enrique Lopez | Summary:We propose to use the unprecedented polarization sensitivity of PRIMA’s PRIMAger Polarization Imager and its high resolution in Band 1 (92 $μ$m) to map magnetic fields across two contrasting molecular cloud environments: the well-studied Perseus cloud and the isolated Musca filament. This comparative study will leverage the existing VLA […]