Search results for "exceptional"
showing 10 items of 32 documents
Spectroscopy of short-lived radioactive molecules: A sensitive laboratory for new physics
2019
The study of molecular systems provides exceptional opportunities for the exploration of the fundamental laws of nature and for the search for physics beyond the Standard Model of particle physics. Measurements of molecules composed of naturally occurring nuclei have provided the most stringent upper bounds to the electron electric dipole moment to date, and offer a route to investigate the violation of fundamental symmetries with unprecedented sensitivity. Radioactive molecules - where one or more of their atoms possesses a radioactive nucleus - can contain heavy and deformed nuclei, offering superior sensitivity for EDM measurements as well as for other symmetry-violating effects. Radium …
Rationalitäten der Wissenproduktion: Über Transformationen von Gegenständen, Technologien und Information in Biomedizin und Lebenswissenschaften
2009
Rationalities of Knowledge Production: On Transformations of Objects, Technologies and Information in Biomedicine and the Life Sciences. Since decades, scientific change has been interpreted in the light of of paradigm shifts and scientific revolutions. The Kuhnian interpretation of scientific change however is now more and more confronted with non-disciplinary thinking in both, science and studies on science. This paper explores how research in biomedicine and the life sciences can be characterized by different rationalities, sometimes converging, sometimes contradictory, all present at the same time with varying ways of influence, impact, and visibility. In general, the rationality of obj…
EVE Online is not for everyone : Exceptionalism in online gaming cultures
2019
EVE Online is a space-themed massively multiplayer online game that has developed a reputation for being difficult and unwelcoming to new players. In this article, I explore how an emphasis on exceptionalism is present throughout discussions about EVE by its developer, the enthusiast gaming press, and survey responses of current players (N = 647). Taken together, information from these sources reinforces a public perception that EVE is a game that is of interest only to a very specific kind of player. In turn, these findings add further evidence to the long-argued position of feminist game scholars: Not all gaming communities are open to all players. Rather, who plays, what they play, when …
Phenomenology in Ortega and in Zubiri
2002
Jose Ortega y Gasset (1883–1955) and Xavier Zubiri (b. 1898) represent an exceptional point in the reception and assimilation of phenomenology in Spain. There can be no possible contextualization of Ortega’s and Zubiri’s thought outside its connections with phenomenology.1
Exceptional points in a non-Hermitian extension of the Jaynes-Cummings Hamiltonian
2016
We consider a generalization of the non-Hermitian \({\mathcal PT}\) symmetric Jaynes-Cummings Hamiltonian, recently introduced for studying optical phenomena with time-dependent physical parameters, that includes environment-induced decay. In particular, we investigate the interaction of a two-level fermionic system (such as a two-level atom) with a single bosonic field mode in a cavity. The states of the two-level system are allowed to decay because of the interaction with the environment, and this is included phenomenologically in our non-Hermitian Hamiltonian by introducing complex energies for the fermion system. We focus our attention on the occurrence of exceptional points in the spec…
Model pseudofermionic systems: Connections with exceptional points
2014
We discuss the role of pseudo-fermions in the analysis of some two-dimensional models, recently introduced in connection with non self-adjoint hamiltonians. Among other aspects, we discuss the appearance of exceptional points in connection with the validity of the extended anti-commutation rules which define the pseudo-fermionic structure.
Characterization of the atmospheric muon flux in IceCube
2015
Muons produced in atmospheric cosmic ray showers account for the by far dominant part of the event yield in large-volume underground particle detectors. The IceCube detector, with an instrumented volume of about a cubic kilometer, has the potential to conduct unique investigations on atmospheric muons by exploiting the large collection area and the possibility to track particles over a long distance. Through detailed reconstruction of energy deposition along the tracks, the characteristics of muon bundles can be quantified, and individual particles of exceptionally high energy identified. The data can then be used to constrain the cosmic ray primary flux and the contribution to atmospheric …
Authoritarian exclusion and laissez‐faire inclusion: Comparing the punishment of men convicted of sex offenses in England & Wales and Norway*
2021
Abstract: Comparative penologists have described neoliberal and social democratic jurisdictions as though they exist at opposite ends of a continuum of inclusion and exclusion, and as though neoliberal states are inactive and social democratic states are invasive. This article, which is based on more than 129 interviews with men convicted of sex offenses in England & Wales and Norway, uses Cohen's work on inclusion and McNeill's typology of rehabilitative forms to complicate this simplistic binary. It argues that the punishment of men convicted of sex offenses in England & Wales was demanding but exclusionary; it imposed strict legal restrictions on these men during and after their imprison…
Exotic interactions mediated by a non-Hermitian photonic bath
2022
Photon-mediated interactions between quantum emitters in engineered photonic baths is an emerging area of quantum optics. At the same time, non-Hermitian (NH) physics is currently thriving, spurred by the exciting possibility to access new physics in systems ruled by non-trivial NH Hamiltonians - in particular photonic lattices - which can challenge longstanding tenets such as the Bloch theory of bands. Here, we combine these two fields and study the exotic interaction between emitters mediated by the photonic modes of a lossy photonic lattice described by a NH Hamiltonian. We show in a paradigmatic case study that structured losses in the field can seed exotic emission properties. Photons …
Quantum correlations in dissipative gain–loss systems across exceptional points
2023
We investigate the behavior of correlations dynamics in a dissipative gain-loss system. First, we consider a setup made of two coupled lossy oscillators, with one of them subject to a local gain. This provides a more realistic platform to implement parity-time (PT) symmetry circumventing the implementation of a pure gain. We show how the qualitative dynamics of correlations resembles that for a pure-gain-loss setup. The major quantitative effect is that quantum correlations are reduced, while total ones are enhanced. Second, we study the behavior of these correlations across an exceptional point (EP) outside of the PT-symmetric regime of parameters, observing how different behaviors across …