894 research outputs found
S-Matrix for AdS from General Boundary QFT
The General Boundary Formulation (GBF) is a new framework for studying
quantum theories. After concise overviews of the GBF and Schr\"odinger-Feynman
quantization we apply the GBF to resolve a well known problem on Anti-deSitter
spacetime where due to the lack of temporally asymptotic free states the usual
S-matrix cannot be defined. We construct a different type of S-matrix plus
propagators for free and interacting real Klein-Gordon theory.Comment: 4 pages, 5 figures, Proceedings of LOOPS'11 Madrid, to appear in IOP
Journal of Physics: Conference Series (JPCS
'Just get pissed and enjoy yourself': understanding lap-dancing as 'anti-work'
Just get pissed and enjoy yourself’ Understanding lap-dancing as ‘anti’ wor
Affine holomorphic quantization
We present a rigorous and functorial quantization scheme for affine field
theories, i.e., field theories where local spaces of solutions are affine
spaces. The target framework for the quantization is the general boundary
formulation, allowing to implement manifest locality without the necessity for
metric or causal background structures. The quantization combines the
holomorphic version of geometric quantization for state spaces with the Feynman
path integral quantization for amplitudes. We also develop an adapted notion of
coherent states, discuss vacuum states, and consider observables and their
Berezin-Toeplitz quantization. Moreover, we derive a factorization identity for
the amplitude in the special case of a linear field theory modified by a
source-like term and comment on its use as a generating functional for a
generalized S-matrix.Comment: 42 pages, LaTeX + AMS; v2: expanded to improve readability, new
sections 3.1 (geometric data) and 3.3 (core axioms), minor corrections,
update of references; v3: further update of reference
The Unruh-deWitt Detector and the Vacuum in the General Boundary formalism
We discuss how to formulate a condition for choosing the vacuum state of a
quantum scalar field on a timelike hyperplane in the general boundary
formulation (GBF) using the coupling to an Unruh-DeWitt detector. We explicitly
study the response of an Unruh-DeWitt detector for evanescent modes which occur
naturally in quantum field theory in the presence of the equivalent of a
dielectric boundary. We find that the physically correct vacuum state has to
depend on the physical situation outside of the boundaries of the spacetime
region considered. Thus it cannot be determined by general principles
pertaining only to a subset of spacetime.Comment: Version as published in CQ
The Unruh Effect in General Boundary Quantum Field Theory
In the framework of the general boundary formulation (GBF) of scalar quantum
field theory we obtain a coincidence of expectation values of local observables
in the Minkowski vacuum and in a particular state in Rindler space. This
coincidence could be seen as a consequence of the identification of the
Minkowski vacuum as a thermal state in Rindler space usually associated with
the Unruh effect. However, we underline the difficulty in making this
identification in the GBF. Beside the Feynman quantization prescription for
observables that we use to derive the coincidence of expectation values, we
investigate an alternative quantization prescription called Berezin-Toeplitz
quantization prescription, and we find that the coincidence of expectation
values does not exist for the latter
Respectability, morality and disgust in the night-time economy: exploring reactions to ‘lap dance’clubs in England and Wales
The night-time economy is often described as repelling consumers fearful of the ‘undesirable Others’ imagined dominant within such time-spaces. In this paper we explore this by describing attitudes towards, and reactions to, one particularly con- tentious site: the ‘lap dance’ club. Often targeted by campaigners in England and Wales as a source of criminality and anti-sociality, in this paper we shift the focus from fear to disgust, and argue that Sexual Entertainment Venues (SEVs) are opposed on the basis of moral judgments that reflect distinctions of both class and gender. Drawing on documentary analysis, survey results and interview data collected during guided walks, we detail the concerns voiced by those anxious about the presence of lap dance or striptease clubs in their town or city, particularly the notion that they ‘lower the tone’ of particular streets or neighbourhoods. Our conclusion is that the opposition expressed to lap dance clubs is part of an attempt to police the bound- aries of respectable masculinities and femininities, marginalizing the producers and consumers of sexual entertainment through ‘speech acts’ which identify such enter- tainment as unruly, vulgar and uncivilized. These findings are considered in the light of ongoing debates concerning the relations of morality, respectability and disgust
Over ‘sexed’ regulation and the disregarded worker: an overview of the impact of sexual entertainment policy on lap-dancing club workers
In England and Wales, with the introduction of Section 27 of the Policing and Crime Act 2009, lap-dancing clubs can now be licensed as Sexual Entertainment Venues. This article considers such, offering a critique of Section 27, arguing that this legislation is not evidence-based, with lap-dancing policy, like other sex-work policies, often associated with crime, deviance and immorality. Furthermore, it is argued that sex-work policies are gradually being homogenised as well as increasingly criminalised. Other criticisms relate to various licensing loopholes which lead to some striptease venues remaining unlicensed and unregulated, potentially impacting on the welfare of erotic dancers. In addition, restrictions on the numbers of lap-dancing venues may exacerbate dancer unemployment, drawing these women into poverty. Finally, The Policing and Crime Act reflects how the political focus is being directed away from the exploitation of workers, on to issues relating
to crime and deviance, despite limited evidence to support this focus
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