Electroweak symmetry breaking in other terms

We analyse descriptions of electroweak symmetry breaking in terms of ultralocal antisymmetric tensor fields and gauge-singlet geometric variables, respectively; in particular, the Weinberg--Salam model and, ultimately, dynamical electroweak symmetry breaking by technicolour theories with enhanced symmetry groups. Our motivation is to unveil the manifestly gauge invariant structure of the different realisations. We find, for example, parallels to different types of torsion.Comment: 15p

Construction status and prospects of the Hyper-Kamiokande project

The Hyper-Kamiokande project is a 258-kton Water Cherenkov together with a 1.3-MW high-intensity neutrino beam from the Japan Proton Accelerator Research Complex (J-PARC). The inner detector with 186-kton fiducial volume is viewed by 20-inch photomultiplier tubes (PMTs) and multi-PMT modules, and thereby provides state-of-the-art of Cherenkov ring reconstruction with thresholds in the range of few MeVs. The project is expected to lead to precision neutrino oscillation studies, especially neutrino CP violation, nucleon decay searches, and low energy neutrino astronomy. In 2020, the project was officially approved and construction of the far detector was started at Kamioka. In 2021, the excavation of the access tunnel and initial mass production of the newly developed 20-inch PMTs was also started. In this paper, we present a basic overview of the project and the latest updates on the construction status of the project, which is expected to commence operation in 2027

Prospects for neutrino astrophysics with Hyper-Kamiokande

Hyper-Kamiokande is a multi-purpose next generation neutrino experiment. The detector is a two-layered cylindrical shape ultra-pure water tank, with its height of 64 m and diameter of 71 m. The inner detector will be surrounded by tens of thousands of twenty-inch photosensors and multi-PMT modules to detect water Cherenkov radiation due to the charged particles and provide our fiducial volume of 188 kt. This detection technique is established by Kamiokande and Super-Kamiokande. As the successor of these experiments, Hyper-K will be located deep underground, 600 m below Mt. Tochibora at Kamioka in Japan to reduce cosmic-ray backgrounds. Besides our physics program with accelerator neutrino, atmospheric neutrino and proton decay, neutrino astrophysics is an important research topic for Hyper-K. With its fruitful physics research programs, Hyper-K will play a critical role in the next neutrino physics frontier. It will also provide important information via astrophysical neutrino measurements, i.e., solar neutrino, supernova burst neutrinos and supernova relic neutrino. Here, we will discuss the physics potential of Hyper-K neutrino astrophysics

TDM 100Gbit/s packet switching in an optical shufflenet

In this paper we present an OTDM multihop prototype network developed in the Lightwave Communication Laboratory at Princeton University. Employing a new self-routing scheme with special address coding suitable for optical packet switching, we demonstrate 100 Gbit/s optical packet switching in an 8-node transparent shufflenetwork which offers extremely high bandwidth and low latency. Our design has also made the network highly scalable, the results from the performance studies of this network can be extended to many other multihop network topologies of larger sizes

Implementation of the Integrated Monitoring System Based on an Automatic Disaster Prevention Device

Part 7: Ubiquitous Communications and NetworksInternational audienceIn this paper, we have presented the Integrated Monitoring System based on an automatic disaster prevention device. The Integrated monitoring system aims to collect information related to vehicles’ input and output and more. To design and implement the automatic disaster prevention system, production devices for antiseptic water and mining systems- vehicles and their license plate recognition systems- were designed and implemented. As experiment results, we can prove a disinfective function that is related to antiseptic water production device. We also proved that it is possible to monitor disinfected vehicles, moving vehicles and even the drivers at all times. Due to its characteristic of integration management, it can be adapted to remote farming and efficient monitoring in disinfection management

Network demonstration of 100 Gbit/s optical packet switching with self-routing

An OTDM multihop prototype network, developed at Princeton University, is presented. By employing a new self-routing scheme with special address coding suitable for optical packet switching, 100Gbit/s optical packet switching in an 8-node transparent shuffle network is demonstrated offering extremely high bandwidth and low latency