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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Semi-leptonic decays on the lattice in the heavy quark effective theory

Duong, Huy Danh January 1994 (has links)
No description available.
12

The role of lattice vibrations in the zero field splitting of Gd'3'+ in an ethylsulphate host lattice

Kelly, Martin January 1993 (has links)
No description available.
13

Investigating phase transitions using the linear delta expansion

Winder, Daniel January 2001 (has links)
No description available.
14

Affine Toda field theory

Fring, A. January 1992 (has links)
No description available.
15

Lagrangian formulation of the superconformal field theory

Liao, Hiu Chung January 1990 (has links)
No description available.
16

Gauge vacua on multiply connected spacetimes

Burgess, Mark January 1990 (has links)
No description available.
17

Heat kernel regularisation and the stochastic quantisation of superfields

Kalivas, N. G. January 1986 (has links)
No description available.
18

Renormalisation of the energy-momentum stress tensor for quantum fields on a curved background

McLaughlin, John Gerard January 1990 (has links)
No description available.
19

Twistor diagrams for a Higgs-like description of the massive propagator

Spence, Stephen Timothy January 1996 (has links)
No description available.
20

The topological renormalisation of the 0(3) sigma model

Costambeys, Richard George January 1995 (has links)
Like other field theories of physical interest, the moduli-space integrals of the non-linear two-dimensional 0(3) sigma model diverge. We show that in the one-instanton sector the imposition of a cut-off in the moduli-space leads to an unacceptable dependence of the Green’s function on the way that the field is split into the quantum piece and the classical background. This dependence may be isolated in a term which may be interpreted as an anomaly to the Ward Identity of the theory. The moduli-space divergence is associated with degeneration of the field configurations to those of another topological sector. Hence it is possible that by modifying the Green’s function in, say, the zero-instanton sector will be able to cancel the divergence in the one- instanton sector. We show that the Ward Identity anomaly in the one-instanton sector may be written in the zero-instanton sector at next to leading order in powers of h, and hence we explicitly calculate the Green's function modification. We have called the process of applying this modification "Topological Renormalisation". A central piece of the modification term is the instanton contribution to the Green's function of the model. This is obtained by using two new methods of calculating the determinant of the fluctuation operator. The application of Topological Renormalisation to other theories is also investigated.

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