Events: detail

Integrable Spin Chains and Quantum Deformations

Hosted by:
Imperial College Department of Physics
Speaker:
Peter Koroteev, ITEP and AEI
Starts:
March 20, 2008 at 05:00 pm
Ends:
March 20, 2008 at 06:00 pm
Location:
Imperial College London, Huxley Building, Room 503, Exhibition Road, London, SW7 2AZ United Kingdom
Maps:

Description

The centrally extended superalgebra psu(2|2)xR3 was shown to play an important role for the integrable structures of the one-dimensional Hubbard model and of the planar AdS/CFT correspondence. Here we consider its quantum deformation U_q(psu(2|2)xR3) and derive the fundamental R-matrix. From the latter we deduce an integrable spin chain Hamiltonian with three independent parameters and the corresponding Bethe equations to describe the spectrum on periodic chains. We relate our Hamiltonian to a two-parametric Hamiltonian proposed by Alcaraz and Bariev which can be considered a quantum deformation of the one-dimensional Hubbard model.

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Contact person:
Duminda Dahanayake
Email:
Website:
Integrable Spin Chains and Quantum Deformations
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