Time dependent transformations in deformation quantization

We study the action of time dependent canonical and coordinate transformations in phase space quantum mechanics. We extend the covariant formulation of the theory by providing a formalism that is fully invariant under both standard and time dependent coordinate transformations. This result considerably enlarges the set of possible phase space representations of quantum mechanics and makes it possible to construct a causal representation for the distributional sector of Wigner quantum mechanics.Comment: 16 pages, to appear in the J. Math. Phy

Electronic temperature sensing yarn

This paper reports the development of an electronic temperature sensing (ETS) yarn by embedding commercially available thermistors within the fibres of a yarn. The thermistor is initially soldered onto a fine copper wire and then encapsulated to form a polymer micro-pod. The micro-pod protects the thermistor from mechanical and chemical stresses. Thereafter the fine copper wire with micro-pods is covered by a tubular warp knitted structure to craft the final ETS yarn. The miniature size of the micro-pod makes the electronics invisible to the wearer. Such a yarn can be used to knit or weave any textile structure. It is also capable of providing temperature readings at a given point (localised) and can be used to make a wearable thermograph. Where the ETS yarn is included in a garment, it can be safely washed

Processamento de lingüiça frescal e defumada de caprinos e ovinos.

Derivados cárneos; Lingüiças frescal e defumada: fluxograma do processamento de lingüiças; Passo a passo para a elaboração industrial da lingüiça; Formulação para elaboração de lingüiças de carne caprina e ovina sem adição de gordura suína.bitstream/CNPC/20710/1/cot78.pd

Sensitivity of ATLAS to FCNC single top quark production

The anomalous production of single top quarks via flavour-changing neutral currents (FCNCs), u(c)+g -> t, is studied using the ATLAS detector at the Large Hadron Collider. Detector simulation is done using the fast simulation package ATLFAST. A number of important systematic effects have been addressed. Based on a cut-based analysis, we shows that, with 10 fb-1, ATLAS can observe such top FCNC interactions with 5 sigma significance if the anomalous coupling strengths are k_ug/Lambda=k_cg/Lambda >= 0.0120 $^{+0.0014}_{-0.0012}$ (sys.) TeV-1, or equivalently Br(t->ug)+Br(t->cg) >= 2.64 $^{+0.63}_{-0.54}$ (sys.) x 10^{-4}$. In terms of production cross section, such a discovery requires at least 13.7 pb of anomalous single top quark production. With this level of sensitivity, ATLAS will be able to test some models of new physics

Generalized Weyl-Wigner map and Vey quantum mechanics

The Weyl-Wigner map yields the entire structure of Moyal quantum mechanics directly from the standard operator formulation. The covariant generalization of Moyal theory, also known as Vey quantum mechanics, was presented in the literature many years ago. However, a derivation of the formalism directly from standard operator quantum mechanics, clarifying the relation between the two formulations is still missing. In this paper we present a covariant generalization of the Weyl order prescription and of the Weyl-Wigner map and use them to derive Vey quantum mechanics directly from the standard operator formulation. The procedure displays some interesting features: it yields all the key ingredients and provides a more straightforward interpretation of the Vey theory including a direct implementation of unitary operator transformations as phase space coordinate transformations in the Vey idiom. These features are illustrated through a simple example.Comment: 15 pages, LaTe