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19932026
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176 papers · 1 filter

astro-ph.HE2024★ 1 cited

Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020

MAGIC Collaboration, S. Abe, J. Abhir +228

The BL Lacertae object VER J0521+211 underwent a notable flaring episode in February 2020. A short-term monitoring campaign, led by the MAGIC (Major Atmospheric Gamma Imaging Chere…

stat.AP2024★ 1 cited

Breaching 1.5°C: Give me the odds

J. Eduardo Vera-Valdés, Olivia Kvist

Climate change communication is crucial to raising awareness and motivating action. In the context of breaching the limits set out by the Paris Agreement, we argue that climate sci…

cond-mat.str-el2024★ 11 cited

Bilayer orthogonal ferromagnetism in CrTe-based van der Waals system

Chiara Bigi, Cyriack Jego, Vincent Polewczyk +19

Systems with pronounced spin anisotropy play a pivotal role in advancing magnetization switching and spin-wave generation mechanisms, which are fundamental for spintronic technolog…

cond-mat.quant-gas2024★ 1 cited

From spontaneous to explicit symmetry breaking in a finite-sized system: Bosonic bound states of an impurity

L. Chergui, F. Brauneis, T. Arnone Cardinale +3

The presence of a single attractive impurity in an ultracold repulsive bosonic system can drive a transition from a homogeneous to a localized state, as we here show for a one-dime…

cond-mat.quant-gas2024★ 6 cited

Lattice Bose polarons at strong coupling and quantum criticality

Ragheed Alhyder, Victor E. Colussi, Matija Čufar +3

We develop a new theoretical framework for exploring a mobile impurity interacting strongly with a highly correlated bath of bosons in the quantum critical regime of a Mott insulat…

stat.ME2024★ 1 cited

A comparison of Kaplan--Meier-based inverse probability of censoring weighted regression methods

Morten Overgaard

Weighting with the inverse probability of censoring is an approach to deal with censoring in regression analyses where the outcome may be missing due to right-censoring. In this pa…

cond-mat.quant-gas2024★ 1 cited

Effective theory for strongly attractive one-dimensional fermions

Timothy G. Backert, Fabian Brauneis, Matija Čufar +3

We study a one-dimensional system of two-component fermions in the limit of strong attractive particle-particle interactions. First, we analyze scattering in the corresponding few-…

cond-mat.mes-hall2024★ 6 cited

Spontaneously formed phonon frequency combs in van der Waals solid CrXTe (X=Ge,Si)

Lebing Chen, Gaihua Ye, Cynthia Nnokwe +10

Optical phonon engineering through nonlinear effects has been utilized in ultrafast control of material properties. However, nonlinear optical phonons typically exhibit rapid decay…

astro-ph.SR2024★ 28 cited

Ice inventory towards the protostar Ced 110 IRS4 observed with the James Webb Space Telescope. Results from the ERS Ice Age program

W. R. M. Rocha, M. K. McClure, J. A. Sturm +37

This work focuses on the ice features toward the binary protostellar system Ced 110 IRS 4A and 4B, and observed with JWST as part of the Early Release Science Ice Age collaboration…

physics.atm-clus2024★ 3 cited

Time-resolved Coulomb explosion imaging of vibrational wave packets in alkali dimers on helium nanodroplets

Nicolaj K. Jyde, Henrik H. Kristensen, Lorenz Kranabetter +4

Vibrational wave packets are created in the lowest triplet state \triplet of and residing on the surface of helium nanodroplets, through non-resonant…

astro-ph.SR2024★ 7 cited

The age of the Methuselah star in light of stellar evolution models with tailored abundances

C. Guillaume, G. Buldgen, A. M. Amarsi +5

Context. HD140283, or the Methuselah star, is a well-known reference object in stellar evolution. Its peculiar chemical composition, proximity and absence of reddening makes it an…

astro-ph.SR2024★ 4 cited

The robustness of inferred envelope and core rotation rates of red-giant stars from asteroseismology

F. Ahlborn, E. P. Bellinger, S. Hekker +2

Rotation is an important, yet poorly-modelled phenomenon of stellar structure and evolution. Accurate estimates of internal rotation rates are therefore valuable for constraining s…

math.PR2024

Large Deviation Analysis for Canonical Gibbs Measures

Christian Hirsch, Martina Petráková

In this paper, we present a large-deviation theory developed for functionals of canonical Gibbs processes, i.e., Gibbs processes with respect to the binomial point process. We stud…

math.PR2024

Functional central limit theorem for topological functionals of Gaussian critical points

Christian Hirsch, Raphaël Lachièze-Rey

We consider Betti numbers of the excursion of a smooth Euclidean Gaussian field restricted to a rectangular window, in the asymptotics where the window grows to R^d . With motivati…

cond-mat.mes-hall2024★ 2 cited

Near-field refractometry of van der Waals crystals

Martin Nørgaard, Torgom Yezekyan, Stefan Rolfs +3

Common techniques for measuring refractive indices, such as ellipsometry and goniometry, are ineffective for van der Waals crystal flakes because of their high anisotropy and small…

cond-mat.str-el2024

Pomeranchuk instability from electronic correlations in CsTiBi kagome metal

Chiara Bigi, Matteo Dürrnagel, Lennart Klebl +19

Among many-body instabilities in correlated quantum systems, electronic nematicity, defined by the spontaneous breaking of rotational symmetry, has emerged as a critical phenomenon…

quant-ph2024★ 10 cited

Hierarchy of approximations for describing quantum light from high-harmonic generation: A Fermi-Hubbard model study

Christian Saugbjerg Lange, Lars Bojer Madsen

The quantum optical description of high-order harmonic generation where both the electrons of the generating medium and the driving and generated light fields are described quantum…

quant-ph2024★ 6 cited

Extracting Dynamical Maps of Non-Markovian Open Quantum Systems

David J. Strachan, Archak Purkayastha, Stephen R. Clark

The most general description of quantum evolution up to a time is a completely positive tracing preserving map known as a dynamical map . Here we consider …

cond-mat.mtrl-sci2024★ 4 cited

Beyond Electric-Dipole Treatment of Light-Matter Interactions in Materials: Nondipole Harmonic Generation in Bulk Si

Simon Vendelbo Bylling Jensen, Nicolas Tancogne-Dejean, Angel Rubio +1

A beyond electric-dipole light-matter theory is needed to describe emerging X-ray and THz applications for characterization and control of quantum materials but inaccessible as non…

cond-mat.mtrl-sci2024★ 2 cited

Direct measurement of 2DEG states in shallow Si:Sb -layers

Frode S. Strand, Simon P. Cooil, Quinn T. Campbell +13

We investigate the electronic structure of high-density layers of Sb dopants in a silicon host, so-called Si:Sb -layers. We show that, in spite of the known challenges in produc…

cs.CV2024★ 2 cited

Gradient Map-Assisted Head and Neck Tumor Segmentation: A Pre-RT to Mid-RT Approach in MRI-Guided Radiotherapy

Jintao Ren, Kim Hochreuter, Mathis Ersted Rasmussen +2

Radiation therapy (RT) is a vital part of treatment for head and neck cancer, where accurate segmentation of gross tumor volume (GTV) is essential for effective treatment planning.…

astro-ph.SR2024★ 13 cited

Connecting integrated RGB mass loss from asteroseismology and globular clusters

K. Brogaard, A. Miglio, W. E. van Rossem +2

Context. Asteroseismic investigations of solar-like oscillations in giant stars enable the derivation of their masses and radii. For mono-age mono-metallicity populations of stars…

cond-mat.mtrl-sci2024★ 93 cited

The Chemistry of Spinel Ferrite Nanoparticle Nucleation, Crystallization, and Growth

Henrik L. Andersen, Cecilia Granados-Miralles, Kirsten M. O. Jensen +2

The nucleation, crystallization, and growth mechanisms of MnFe2O4, CoFe2O4, NiFe2O4, and ZnFe2O4 nanocrystallites prepared from coprecipitated transition metal (TM) hydroxide precu…

cs.LG2024

Understanding Aggregations of Proper Learners in Multiclass Classification

Julian Asilis, Mikael Møller Høgsgaard, Grigoris Velegkas

Multiclass learnability is known to exhibit a properness barrier: there are learnable classes which cannot be learned by any proper learner. Binary classification faces no such bar…