Spatially extended Unruh-DeWitt detectors for relativistic quantum information

Unruh-DeWitt detectors interacting locally with a quantum field are systems under consideration for relativistic quantum information processing. In most works, the detectors are assumed to be point-like and, therefore, couple with the same strength to all modes of the field spectrum. We propose the use of a more realistic detector model where the detector has a finite size conveniently tailored by a spatial profile. We design a spatial profile such that the detector, when inertial, naturally couples to a peaked distribution of Minkowski modes. In the uniformly accelerated case, the detector couples to a peaked distribution of Rindler modes. Such distributions are of special interest in the analysis of entanglement in non-inetial frames. We use our detector model to show the noise detected in the Minkowski vacuum and in single particle states is a function of the detector's acceleration.Comment: Revised for publication, 9 pages (+1 references page), 7 figure

Teaching as Creative Practice Symposium

The Teaching as Creative Practice Symposium explored the relationship between creative practice, creative teaching and teacher identity. The purpose of the symposium was to • celebrate UAL funded educational development projects and those responsible for them whilst building capacity • support colleagues in developing their own response • share good practice across the UAL and also across the sector through an open symposium • enable staff at the university to engage with a wider community • provide models of excellence and creative practice to support a wider understanding of professional development in creative subject

Time evolution techniques for detectors in relativistic quantum information

The techniques employed to solve the interaction of a detector and a quantum field typically require perturbation methods. We introduce mathematical techniques to solve the time evolution of an arbitrary number of detectors interacting with a quantum field. Our techniques apply to harmonic oscillator detectors and can be generalized to treat detectors modeled by quantum fields. Since the interaction Hamiltonian we introduce is quadratic in creation and annihilation operators, we are able to draw from continuous variable techniques commonly employed in quantum optics.Comment: 13 pages, 1 figure, updated to published version . I. Fuentes previously published as I. Fuentes-Guridi and I. Fuentes-Schulle

Forced migrants, media, and securitization: making sense of the changing representations of transit asylum seekers in Indonesian print media

This paper aims to explain how and why the representations of transit forced migrants in Indonesian major print media were vastly different within two time spans: (1) during the arrivals of the Indochinese refugees in 1975-1996 and (2) in the period of the new generations of refugees from Middle Eastern and South Asian countries in 1997-2013. Employing media content analysis of 216 news articles from three major print media in Indonesia, this study found out that the Indochinese refugees were portrayed with positive labels and thus, mainly discussed in connection with the non-security theme. In contrast, the new generations of forced migrants were portrayed with negative labels such as "illegal immigrants" and were framed as security threats. Grounded within Securitization Theory, this paper thus argues that the changing representations were caused by the securitizing move made by specialized agencies in Indonesia

Flexible phalli: contextualising the magic and materiality of a Romano-British antler phallus from Colsterworth Quarry, Lincolnshire

In 1932 a deer antler carved into the form of an approximately life-sized, three-dimensional, erect human phallus was discovered alongside Romano-British activity at Colsterworth Quarry, Lincolnshire and donated to Grantham Museum. Never previously subject to a discussion in print, this article considers the phallus through the lenses of apotropaic magic and the magico-medicinal and socio-religious significance of deer and deer products in Roman Britain. The original context of discovery is not well recorded, though likely relates to an area of industrial activity with an associated settlement nearby. A variety of potential functional and ritual contexts for the antler phallus are considered: as a fragment of religious statuary, an apotropaic device on a building or vehicle, a votive offering, and as part of a tool or vessel. These discussions explore the highly contextualised applications of embodied and disembodied phallic imagery in Roman Britain, the liminal space between concepts of religion and magic, and the significance of materiality and embodied interaction when considering the socio-religious significance of phallic imagery

Securitization of Transit Forced Migrants: An Analysis of the Changing Representations of Refugees and Asylum Seekers in Indonesian Major Print Media

This thesis aims to explain how and why the representations of transit forced migrants in Indonesian major print media were vastly different within two time spans: (1) during the arrivals of the Indochinese refugees in 1975-1996 and (2) in the period of the new generations of refugees from Middle Eastern and South Asian countries in 1997-2013. Employing media content analysis of 216 news articles from three major print media in Indonesia, this study found out that the Indochinese refugees were portrayed with positive labels and thus, mainly discussed in connection with the non-security theme. In contrast, the new generations of forced migrants were portrayed with negative labels such as ‘illegal immigrants’ and were framed as security threats. Grounded within Securitization Theory, this thesis thus argues that the changing representations were caused by the securitizing move made by specialized agencies in Indonesia. Additionally, this study took one further step by questioning: why were the Indochinese refugees not securitized? And why were the new generations of refugees securitized? To provide answers for these questions, this thesis employs theoretical thematic analysis concentrating on subconscious drivers and cost-benefit calculations that lead to the actors’ decision to securitize or not to securitize the forced migrants