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Room temperature magnetic order in an organic magnet derived from polyaniline (2004)
Journal Article
Zaidi, N., Giblin, S., Terry, I., & Monkman, A. (2004). Room temperature magnetic order in an organic magnet derived from polyaniline. Polymer, 45(16), 5683-5689. https://doi.org/10.1016/j.polymer.2004.06.002

We report on the synthesis and characterisation of a new type of polymer, PANiCNQ produced from polyaniline (PANi) and an acceptor molecule, tetracyanoquinodimethane (TCNQ). PANiCNQ combines a fully conjugated nitrogen containing backbone with molecu... Read More about Room temperature magnetic order in an organic magnet derived from polyaniline.

Heating of galactic discs by infalling satellites (2004)
Journal Article
Benson, A., Lacey, C., Frenk, C., Baugh, C., & Cole, S. (2004). Heating of galactic discs by infalling satellites. Monthly Notices of the Royal Astronomical Society, 351(4), 1215-1236. https://doi.org/10.1111/j.1365-2966.2004.07870.x

We develop an analytic model to calculate the rate at which galaxy discs are heated by dark matter substructures orbiting in their haloes. The model takes into account the internal structure, mass function and accretion rate of satellites expected in... Read More about Heating of galactic discs by infalling satellites.

Genetic algorithms and experimental discrimination of SUSY models (2004)
Journal Article
Allanach, B., Grellscheid, D., & Quevedo, F. (2004). Genetic algorithms and experimental discrimination of SUSY models. Journal of High Energy Physics, 2004(07), https://doi.org/10.1088/1126-6708/2004/07/069

We introduce genetic algorithms as a means to estimate the accuracy required to discriminate among different models using experimental observables. We exemplify the technique in the context of the minimal supersymmetric standard model. If supersymmet... Read More about Genetic algorithms and experimental discrimination of SUSY models.

Non-MHV tree amplitudes in gauge theory (2004)
Journal Article
Georgiou, G., Glover, E., & Khoze, V. (2004). Non-MHV tree amplitudes in gauge theory. Journal of High Energy Physics, 2004(07), https://doi.org/10.1088/1126-6708/2004/07/048

We show how all non-MHV tree-level amplitudes in 0 ≤ ≤ 4 gauge theories can be obtained directly from the known MHV amplitudes using the scalar graph approach of Cachazo, Svrcek and Witten. Generic amplitudes are given by sums of inequivalent scalar... Read More about Non-MHV tree amplitudes in gauge theory.

Hidden exceptional global symmetries in 4-D CFTs (2004)
Journal Article
Franco, S., Hanany, A., & Kazakopoulos, P. (2004). Hidden exceptional global symmetries in 4-D CFTs. Journal of High Energy Physics, 2004(07), Article 060. https://doi.org/10.1088/1126-6708/2004/07/060

We study four dimensional = 1 gauge theories that arise on the worldvolume of D3-branes probing complex cones over del Pezzo surfaces. Global symmetries of the gauge theories are made explicit by using a correspondence between bifundamental fields in... Read More about Hidden exceptional global symmetries in 4-D CFTs.

Double-diffractive χ meson production at the hadron colliders (2004)
Journal Article
Khoze, V., Martin, A., Ryskin, M., & Stirling, W. (2004). Double-diffractive χ meson production at the hadron colliders. The European Physical Journal C, 35(2), 211-220. https://doi.org/10.1140/epjc/s2004-01857-6

The double-diffractive production of χcχc and χbχb mesons, with a rapidity gap on either side, is studied, using both the Regge formalism and the perturbative QCD approach. Due to the rather low scale, the exclusive double-diffractive process pp→p+χ+... Read More about Double-diffractive χ meson production at the hadron colliders.

Uncertainties of predictions from parton distributions II: theoretical errors (2004)
Journal Article
Martin, A., Roberts, R., Stirling, W., & Thorne, R. (2004). Uncertainties of predictions from parton distributions II: theoretical errors. The European Physical Journal C, 35(3), 325-348. https://doi.org/10.1140/epjc/s2004-01825-2

We study the uncertainties in parton distributions, determined in global fits to deep inelastic and related hard scattering data, due to so-called theoretical errors. Amongst these, we include potential errors due to the change of perturbative order... Read More about Uncertainties of predictions from parton distributions II: theoretical errors.

Einstein gravity on the codimension 2 brane? (2004)
Journal Article
Bostock, P., Gregory, R., Navarro, I., & Santiago, J. (2004). Einstein gravity on the codimension 2 brane?. Physical Review Letters, 92, https://doi.org/10.1103/physrevlett.92.221601

We look at general brane worlds in six-dimensional Einstein-Gauss-Bonnet gravity. We find the general matching conditions for the brane world, which remarkably give precisely the four-dimensional Einstein equations for the brane, even when the extra... Read More about Einstein gravity on the codimension 2 brane?.

High-redshift radio-quiet quasars: Exploring the parameter space of accretion models. I. Hot semispherical flow (2004)
Journal Article
Sobolewska, M., Siemiginowska, A., & Zycki, P. (2004). High-redshift radio-quiet quasars: Exploring the parameter space of accretion models. I. Hot semispherical flow. Astrophysical Journal, 608(1), 80-94. https://doi.org/10.1086/392529

Two families of models are currently considered to describe an accretion flow onto black holes and production of the observed X-ray radiation: (1) a standard cold accretion disk with a hot corona above it and (2) an outer truncated accretion disk wit... Read More about High-redshift radio-quiet quasars: Exploring the parameter space of accretion models. I. Hot semispherical flow.