Onset of many-body chaos in the $O(N)$ model

Kavli Affiliate: Debanjan Chowdhury | First 5 Authors: Debanjan Chowdhury, Brian Swingle, , , | Summary: The growth of commutators of initially commuting local operators diagnoses the onset of chaos in quantum many-body systems. We compute such commutators of local field operators with $N$ components in the $(2+1)$-dimensional $O(N)$ nonlinear sigma model to leading order […]


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Correcting Type Ia Supernova Distances for Selection Biases and Contamination in Photometrically Identified Samples

Kavli Affiliate: Richard Kessler | First 5 Authors: Richard Kessler, Dan Scolnic, , , | Summary: We present a new technique to create a bin-averaged Hubble Diagram (HD) from photometrically identified SN~Ia data. The resulting HD is corrected for selection biases and contamination from core collapse (CC) SNe, and can be used to infer cosmological […]


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astroABC: An Approximate Bayesian Computation Sequential Monte Carlo sampler for cosmological parameter estimation

Kavli Affiliate: Elise Jennings | First 5 Authors: Elise Jennings, Maeve Madigan, , , | Summary: Given the complexity of modern cosmological parameter inference where we are faced with non-Gaussian data and noise, correlated systematics and multi-probe correlated data sets, the Approximate Bayesian Computation (ABC) method is a promising alternative to traditional Markov Chain Monte […]


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Manifest Duality for Partially Massless Higher Spins

Kavli Affiliate: Austin Joyce | First 5 Authors: Kurt Hinterbichler, Austin Joyce, , , | Summary: In four dimensions, partially massless fields of all spins and depths possess a duality invariance akin to electric-magnetic duality. We construct metric-like gauge invariant curvature tensors for partially massless fields of all integer spins and depths, and show how […]


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An Integrated System at the Bleien Observatory for Mapping the Galaxy

Kavli Affiliate: Chihway Chang | First 5 Authors: Chihway Chang, Christian Monstein, Joel Akeret, Sebastian Seehars, Alexandre Refregier | Summary: We describe the design and performance of the hardware system at the Bleien Observatory. The system is designed to deliver a map of the Galaxy for studying the foreground contamination of low-redshift (z=0.13–0.43) H$_{rm I}$ […]


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A Modular Data Acquisition System using the 10 GSa/s PSEC4 Waveform Recording Chip

Kavli Affiliate: Eric Oberla | First 5 Authors: M. Bogdan, E. Oberla, H. J. Frisch, M. Wetstein, | Summary: We describe a modular multi-channel data acquisition system based on the 5-15 Gigasample-per-second waveform-recording PSEC4 chip. The system architecture incorporates two levels of hardware with FPGA-embedded system control and in-line data processing. The front-end unit is […]


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Stability and Occurrence Rate Constraints on the Planetary Sculpting Hypothesis for “Transitional” Disks

Kavli Affiliate: Ruobing Dong | First 5 Authors: Ruobing Dong, Rebekah Dawson, , , | Summary: Transitional disks, protoplanetary disks with deep and wide central gaps, may be the result of planetary sculpting. By comparing numerical planet-opening-gap models with observed gaps, we find systems of 3-6 giant planets are needed in order to open gaps […]


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