OpenAccess

We present the International Particle Physics Outreach Group (IPPOG), a global network dedicated to connecting students, educators, and the general public with the world of particle physics. In this paper, we outline the need to bridge the existing gap between the particle physics community and the wider audience, and we present the solutions that IPPOG has implemented to overcome it through three pillar Activities: the International Masterclasses and the Global Cosmics hands-on activities network, which have engaged together over 200,000 high-school students to date, and the curation of an Outreach Resource Database and web portal..

We study the non-Gaussian tail of the curvature fluctuation, $\zeta$, in an inflationary scenario with a transient ultra slow-roll phase that generates a localized large enhancement of the spectrum of $\zeta$. To do so, we implement a numerical procedure that provides the probability distribution of $\zeta$ order by order in perturbation theory. [...]

Designing proteins that bind with high affinity to hydrophilic protein target sites remains a challenging problem. Here we show that RFdiffusion can be conditioned to generate protein scaffolds that form geometrically matched extended β-sheets with target protein edge β-strands in which polar groups on the target are complemented with hydrogen bonding groups on the design. [...]

This case report describes single surface substitutions that improve the crystallizability and diffraction properties of a flexible two-domain protein. InlB392 comprises the internalin domain and the B repeat of the Listeria monocytogenes invasion protein InlB. [...]

Infections with Streptococcus pyogenes are among the most important diseases caused by bacteria and are responsible for around 500,000 deaths every year. In 2024, macrolide-resistant S. [...]

HSP10 is a well-known human co-chaperone that interacts with HSP60 to comprise the HSP60/10 chaperonin complex which upholds mitochondrial proteostasis. HSP10 also demonstrates independent roles in binding to misfolded proteins and interacts with several amyloidogenic client proteins. [...]

Low-temperature superconductivity is treated at an introductory level. The topics include Meissner-Ochsenfeld effect and London equations, thermodynamic properties of the superconducting state, type I and II superconductors, flux quantisation, superconductors in microwave fields and superconducting quantum interference effects. [...]

The basics of superconductivity are outlined with special emphasis on the features which are relevant for the application in magnets and radio frequency cavities for high energy particle accelerators. The special properties of superconducting accelerator magnets are described in detail: design principles, magnetic field calculations, magnetic forces, quench performance, persistent magnetization currents and eddy currents. [...]

Nach einer Einführung in die Grundbegriffe der speziellen Relativitätstheorie möchte ich aus der Vielzahlmöglicher Themenkomplexe drei herausgreifen, mit denen ich mich während meiner Berufstätigkeit befasst habe und die die Auswirkungen der Relativitätstheorie in Physik und Technik in schöner Weise verdeutlichen:1) Elementarteilchenphysik und Beschleuniger2) Das Magnetfeld als relativistischer Effekt3) Der Freie-Elektronen-Laser, eine relativistische StrahlungsquelleDiese Ausarbeitung enthält mehr Material als meineinstündiger Vortrag in Bad Honnef. Um dem Leser dasNachvollziehen der Rechnungen zu erleichtern, wird auchder mathematische Formalismus der Relativitäts- undQuantentheorie ausführlicher dargestellt..

1) Algebraische Behandlung des harmonischen Oszillators 2) Quantisierung des elektromagnetischen Feldes 3) Emission und Absorption von Strahlung 4) Weitere Betrachtungen zur Quantenfeldtheorie