Princeton University

Death and chemotaxis: Bacterial chemotaxis enables collective escape from phage predation

Bacteriophages (“phage”) are viruses that prey on bacteria in diverse environments, from biological tissues to soils. In many of these environments, bacterial hosts are constantly migrating, yet how bacterial migration is influenced by phage predation remains poorly understood. U...

Inductive Biases in Field-level Cosmological Inference from Galaxy Catalogs

Abstract We perform field-level likelihood-free inference of the matter density parameter Ω m from simulated galaxy catalogs using machine learning models with differing inductive biases. Using hydrodynamic simulations from CAMELS, we examine how observable choice and architectur...

Time-modulated intelligent reflecting surfaces for integrated sensing, communication and security with generative artificial intelligence design

We propose a physical layer security approach for integrated sensing and communication (ISAC) systems, where targets may act as eavesdroppers. A time-modulated intelligent reflecting surface (TM-IRS) preserves data integrity at legitimate communication users (CUs) while scramblin...

Measuring the rate of glitches in interferometric gravitational wave detectors with a hierarchical Bayesian model

Abstract Ground-based gravitational wave detectors are now routinely surveying the dark Universe, finding hundreds of collisions between compact objects. However, terrestrial non-Gaussian noise artefacts, commonly known as glitches, reduce the sensitivity to signals and can overl...

From misogyny to mobilization: Hostile sexism and conflictual online discussions indirectly predict men's rights activism via heightened identification as a men's rights supporter

Abstract Although sexism may serve as a gateway into the men's rights movement, few studies have examined group processes in online environments that fuel this reactionary movement. We address this gap by examining whether interacting with like‐minded others fosters an emergent s...

Laboratory Measurements of Energy Partitioning and Anomalous Electron Heating in Magnetized, Perpendicular Collisionless Shocks

Abstract We present laboratory results on energy partitioning from supercritical, magnetized collisionless shock experiments ( M A ∼ 8, M ms ∼ 4). We report the first observation of fully developed laboratory shocks that evolve for more than seven upstream ion gyroperiods and hav...

Constraining Dust Formation in the Superluminous Supernova 2017gci with JWST Observations

Abstract We present JWST/MIRI observations of the Type I superluminous supernova (SLSN) 2017gci obtained over 2000 rest-frame days after the supernova (SN) exploded, which represent the latest phase images taken of any known SLSN to date. We find that archival Wide-field Infrared...

Subseasonal forecast improvements from sea ice concentration data assimilation in the Antarctic

Abstract. This study evaluates the impact of sea ice concentration (SIC) data assimilation (DA) on subseasonal forecasts of Antarctic sea ice by comparing reforecast experiment suites initialized from two sets of initial conditions (ICs): one with SIC DA and the other without. Th...

Machine Learning on Heterogeneous, Edge, and Quantum Hardware for Particle Physics

The next generation of particle physics experiments will face an era of challenges in data acquisition, due to unprecedented data rates and volumes along with extreme environments and operational constraints. Harnessing these data for scientific discovery demands real-time infere...

Impacts of Sea Surface Temperature Warming Pattern Biases on Tropical Cyclone Activity and Hazard

Abstract Most climate models simulate greater warming in the equatorial eastern Pacific than in the west under historical forcing, resulting in a reduced zonal sea surface temperature (SST) gradient and a weakened Walker circulation. This contrasts with observed trends and highli...

An analytical model for rotors in confined flow across operating regimes

Rotors operating in confined flows, or blockage, are commonly encountered in wind and water tunnels, as well as in shallow or dense deployments of hydrokinetic turbines. Confinement induces a streamwise pressure gradient in the channel, modifying the rotor induction, thrust and p...

A supergene and genomic mosaicism are associated with phenotypic evolution in Galápagos tree finches

Abstract Adaptive radiations provide powerful models to study the origins of phenotypic novelty and species diversity. Darwin’s finches constitute a classic example of adaptive radiation, in which beak morphology is a key trait related to fitness. Here, we focus on Camarhynchus t...

Examining Factors that Influence Acceptability of Mindfulness-Based Cognitive Therapy: Experimental and Correlational Approaches

Objectives. Mindfulness-based interventions (MBIs) are widely used treatments that aim to increase clients' awareness and acceptance of their present-moment experiences. Although delivered as secular treatments, their practices have roots in East and South Asian religious traditi...

Dispersal diversity buffers species vulnerability to local extinction

Abstract Predicting species persistence within ecological communities is a fundamental challenge for both empirical and theoretical ecology. Existing methods span from mechanistic models, whose parameters are difficult to estimate from data, to statistical tools whose context-spe...

Line defects with a cusp in fermionic CFTs

A bstract We study line defects with a cusp in fermionic CFTs arising as fixed points of scalar-fermion theories with Yukawa interactions. These include the Gross-Neveu-Yukawa model and some of its generalizations with additional scalar fields, which can be thought of as UV compl...

Understanding consciousness (biological and artificial) as a society of self-schemas

This article argues that human cognition is more than the performance of functions such as memory, decision-making, and attention. The brain also builds schematic models of those cognitive functions and uses those models to monitor, predict, and partially control them. When you i...

Irregularly and incompletely sampled random fields in the Earth sciences: Analysis and synthesis of parameterized covariance models

Summary Geophysical data observed in the Earth, planetary, and lunar sciences are spatially limited to sampling plans designed to span a feature of interest whose resolution and regularity in discretization are bound by site, observational, and instrumental constraints. Common wi...

Epigenetic aging and transposon dysregulation reflect size-related lifespan compression in dogs

The extraordinary lifespan variation in domestic dogs provides a natural experiment for testing how intrinsic rates of biological aging shape lifespan. Using 1640 methylomes from 894 dogs, we developed an epigenetic clock that predicted mortality and demonstrated that epigenetic...

Characteristics of monotonic sheaths near a wall with grazing magnetic incidence

Abstract We consider a magnetised plasma in contact with an absorbing planar wall, where the angle α between the magnetic field and the wall is small, α ≪ 1 (in radians), and the plasma is uniform in the directions tangential to the wall. The finite ratio γ of the characteristic...

Second quantization of the nonlinear Vlasov–Poisson system for quantum computation

Abstract Current quantum algorithms for plasma physics require linearized systems, and quantum algorithms for nonlinear systems are highly system-specific. Second quantization, which is system-agnostic, has the exceptional capacity to render many systems suitable for quantum comp...