Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Drummond, I A"'
Autor:
Drummond, I. T.
We study two (massless free field) models, a photon/photino model with a vector gauge field and a Majorana spinor field, and a Wess-Zumino model. They each exhibit Lorentz symmetry violation but retain, in an appropriate way, the supersymmetry corres
Externí odkaz:
http://arxiv.org/abs/2305.08683
Autor:
Drummond, I. T.
Publikováno v:
Phys. Rev. D 101, 085004 (2020)
We study the effect of Lorentz symmetry violation (LSV) on the behaviour at high energy of SU(N) gauge theory with quarks in the fundamental representation. The approach is similar to that for QED treated in a previous paper. In contrast to QED, stan
Externí odkaz:
http://arxiv.org/abs/1912.03087
Autor:
Drummond, I. T.
Publikováno v:
Phys. Rev. D 95, 025006 (2017)
We study, as a model of Lorentz symmetry breaking, the quantisation and renormalisation of an extension of QED in a flat spacetime where the photons and electrons propagate differently and do not share the same lightcone. We will refer to this model
Externí odkaz:
http://arxiv.org/abs/1603.09211
Publikováno v:
Musculoskeletal Surgery; Sep2024, Vol. 108 Issue 3, p359-366, 8p
Autor:
Drummond, I. T.
By means of simple models in a flat spacetime manifold we examine some of the issues that arise when quantizing interacting quantum fields in multi-metric backgrounds. In particular we investigate the maintenance of a causal structure in the models.
Externí odkaz:
http://arxiv.org/abs/1303.3126
Autor:
Drummond, I. T., Horgan, R. R.
We extend the work of Tanase-Nicola and Kurchan on the structure of diffusion processes and the associated supersymmetry algebra by examining the responses of a simple statistical system to external disturbances of various kinds. We consider both the
Externí odkaz:
http://arxiv.org/abs/1106.2727
Publikováno v:
J. Phys. A., 37, 10459 (2004)
We develop perturbation theory and physically motivated resummations of the perturbation theory for the problem of a tracer particle diffusing in a random media. The random media contains point scatterers of density $\rho$ uniformly distributed throu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0409454
Publikováno v:
J. Phys. A 37 (6) 2039 (2004)
We obtain exact results for the effective diffusion constant of a two dimensional Langevin tracer particle in the force field generated by charged point scatterers with quenched positions. We show that if the point scatterers have a screened Coulomb
Externí odkaz:
http://arxiv.org/abs/cond-mat/0311125
Publikováno v:
Addendum to Phys.Rev.D66:094509,2002
General O(alpha) radiative corrections to lattice actions may be interpreted as counterterms that give additive contributions to the one-loop renormalisation of the anisotropy. The effect of changing the radiative coefficients is thus easily calculab
Externí odkaz:
http://arxiv.org/abs/hep-lat/0307010
We calculate the two loop Landau mean links and the one loop renormalisation of the anisotropy for Wilson and improved SU(3) gauge actions, using twisted boundary conditions as a gauge invariant infrared regulator. We show these accurately describe s
Externí odkaz:
http://arxiv.org/abs/hep-lat/0209130