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Finite temperature dynamical structure factors of low dimensional strongly correlated systems

Abstract:

We determine the dynamical structure factors of two gapped correlated electron systems, namely the Ising model in a strong transverse field and the two-leg spin-1/2 Heisenberg ladder in the limit of strong rung coupling. We consider the low-temperature limit, employing a variety of analytical and numerical techniques. The coherent modes of single-particle excitations, which are delta functions at zero temperature, are shown to broaden asymmetrically in energy with increasing temperature. Firs...

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Institution:
University of Oxford
Research group:
Condensed Matter Theory Group
Oxford college:
Wolfson College
Department:
Mathematical,Physical & Life Sciences Division - Physics - Theoretical Physics
Role:
Author

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Role:
Supervisor
Publication date:
2010
Type of award:
DPhil
Level of award:
Doctoral
Awarding institution:
Oxford University, UK
URN:
uuid:a7d1c49c-4d2b-45a8-854a-aad7f7e18f72
Local pid:
ora:4895

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