Dennis Hinrichs: Process-chain approach applied to the Bose-Hubbard model
Talk, Spring Meeting of the DPG in March 2011
Process-chain approach applied to the Bose-Hubbard model
- Date of Upload: 2011-03-21
- The process-chain approach is a powerful tool for carrying out perturbative calculations on many-body lattice systems in high order. In combination with the method of the effective potential, this technique permits us to determine the phase boundary marking the superfluid to Mott-insulator quantum phase transition for various lattice types with high accuracy. Moreover, it will be shown that it also gives access
to the superfluid density, and to critical exponents.
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Last Update: Mon Mar 21 11:56:29 2011