Kaltenbrunner, Thomas (2014) Emergent Phenomena in Matrix Models. PhD thesis, National University of Ireland Maynooth.
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Abstract
In this work we perform a careful study of different matrix models and particularly
the property of emergent phenomena in them. We start discussing a 2-matrix
model of Yang-Mills type that exhibits an emergent topology in the strong coupling
limit. We use Monte-Carlo simulations to obtain various observables that allow us
to get more insight in the transition from the non-commutative regime towards the
commutative, strong coupling, limit.
We will continue to discuss higher dimensional Yang-Mills matrix models, focusing
on the lowest dimensional case that is well defned, D = 3, and on the large-D limit.
While we discuss the possibility of an emergent topology in 3 dimensions, we find
that the behaviour of this type of models changes towards random matrices for large
D.
In the second part of the thesis we will add a Myers term to the Yang-Mills type
models which extends the possible solutions to the model by fuzzy spaces. We carry
out a 1-loop calculation for a general SU(d) symmetric solution to this class of
models. We will then turn to a numerical study of a model that incorporates the
simplest case of a fuzzy manifold, the fuzzy sphere. We will further study fuzzy CP2
which appears as a solution to the 8-dimensional Yang-Mills-Myers model. Numerical
results from a Monte-Carlo simulation will be used to compare with the analytical
results obtained earlier. We will further construct a slightly modified 8-dimensional
model that has a fuzzy complex projective plane as the ground state in phase space.
In total, we find four different phases in this model, which we will describe in detail
after numerically mapping the phase diagram.
Item Type: | Thesis (PhD) |
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Keywords: | Emergent Phenomena; Matrix Models; |
Academic Unit: | Faculty of Science and Engineering > Mathematical Physics |
Item ID: | 5003 |
Depositing User: | IR eTheses |
Date Deposited: | 04 Jun 2014 11:44 |
URI: | https://mu.eprints-hosting.org/id/eprint/5003 |
Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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