Constraints on Long-Range Forces in De Sitter Space

Kavli Affiliate: Austin Joyce | First 5 Authors: Daniel Baumann, Daniel Baumann, , , | Summary: The representation theory of de Sitter space admits partially massless (PM) particles, but whether such particles can participate in consistent interacting theories remains unclear. We investigate the consistency of theories containing PM fields, particularly when these fields are coupled […]


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A Comparison of Full Spectral Fitting Codes for Measuring the Stellar Initial Mass Function and Other Stellar Population Properties in Elliptical Galaxies

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: , , , , | Summary: We present a comparative test of four widely used full spectral fitting codes, with the aim of answering the question: how robust is the retrieval of the stellar initial mass function (IMF) and other stellar properties of galaxies? We used […]


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CelloAI: Leveraging Large Language Models for HPC Software Development in High Energy Physics

Kavli Affiliate: Salman Habib | First 5 Authors: Mohammad Atif, Mohammad Atif, , , | Summary: Next-generation High Energy Physics (HEP) experiments will generate unprecedented data volumes, necessitating High Performance Computing (HPC) integration alongside traditional high-throughput computing. However, HPC adoption in HEP is hindered by the challenge of porting legacy software to heterogeneous architectures and […]


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Stabilization of Perturbed Loss Function: Differential Privacy without Gradient Noise

Kavli Affiliate: Salman Habib | First 5 Authors: Salman Habib, Salman Habib, , , | Summary: We propose SPOF (Stabilization of Perturbed Loss Function), a differentially private training mechanism intended for multi-user local differential privacy (LDP). SPOF perturbs a stabilized Taylor expanded polynomial approximation of a model’s training loss function, where each user’s data is […]


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Not-so-heavy metal(s): Chemical Abundances in the Ultra-faint Dwarf Galaxies Eridanus IV and Centaurus I

Kavli Affiliate: Alexander P. Ji | First 5 Authors: MairĂ©ad E Heiger, MairĂ©ad E Heiger, , , | Summary: We present detailed chemical abundances of the brightest star in each of the ultra-faint dwarf galaxies Eridanus IV and Centaurus I using high-resolution Magellan/MIKE spectroscopy. The brightest star in Centaurus I, CenI-5136, is a very metal-poor […]


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The On-shell Gravity Action and Linear Dilaton Holography

Kavli Affiliate: Savdeep Sethi | First 5 Authors: Andrea Dei, Andrea Dei, , , | Summary: Computing the Euclidean spacetime action on-shell provides a useful way of both testing holographic proposals and determining the string theory sphere partition function. We consider families of three-dimensional linear dilaton spacetimes for which there are holographic proposals that share […]


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The On-shell Gravity Action and Linear Dilaton Holography

Kavli Affiliate: Savdeep Sethi | First 5 Authors: Andrea Dei, Andrea Dei, , , | Summary: Computing the Euclidean spacetime action on-shell provides a useful way of both testing holographic proposals and determining the string theory sphere partition function. We consider families of three-dimensional linear dilaton spacetimes for which there are holographic proposals that share […]


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Teaching LLMs to Speak Spectroscopy

Kavli Affiliate: Salman Habib | First 5 Authors: Nesar Ramachandra, Nesar Ramachandra, , , | Summary: Pre-trained Large Language Models (LLMs) have revolutionized text processing, yet adapting Transformer-based neural networks to non-textual scientific modalities typically requires specialized architectures and extensive computational resources. We demonstrate that LLaMA-3.1-8B can be efficiently repurposed to predict galaxy redshifts from […]


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