Quantum Field Theory Seminar
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Tue, 19/10/2010 12:00 |
Subir Sarkar (Theoretical Physics) |
Quantum Field Theory Seminar  |
L3 |
| Much effort has been devoted to the study of weak scale particles, e.g. supersymmetric neutralinos, which have a relic abundance from thermal equilibrium in the early universe of order what is inferred for dark matter. This does not however provide any connection to the comparable abundance of baryonic matter, which must have a non-thermal origin. However "dark baryons" of mass ~5 GeV from a new strongly interacting sector would naturally provide dark matter and are consistent with recent putative signals in experiments such as CoGeNT and DAMA. Such particles would accrete in the Sun and affect heat transport in the interior so as to affect low energy neutrino fluxes and can possibly resolve the current conflict between helioseismological data and the Standard Solar Model. | |||
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Tue, 02/11/2010 12:00 |
Francis Bursa (Cambridge) |
Quantum Field Theory Seminar |
L3 |
| String field theory is a candidate for a full non-perturbative definition of string theory. We aim to define string field theory on a space-time lattice to investigate its behaviour at the quantum level. Specifically, we look at string field theory in a one dimensional linear dilaton background, using level truncation to restrict the theory to a finite number of fields. I will report on our preliminary results at level-0 and level-1. | |||
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Tue, 23/11/2010 12:00 |
Stuart Dowker (Manchester) |
Quantum Field Theory Seminar |
L3 |
