ICTP Asian Network School and Workshop on
Complex Condensed Matter Systems
Complex Condensed Matter Systems
Hanoi, 20-24 November 2017
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ICTP Asian Network School and Workshop on
Complex Condensed Matter Systems
Hanoi, 20-24 November 2017
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ProgrammeP.9 -- Poster Date: Friday, 24 November 2017 Time: 10:30 - 11:20 Path Integral of Heisenberg Model with Thermal VacanciesDiane M. Ca\~{n}eso, and Jose Perico H. Esguerra Theoretical Physics Group, National Institute of Physics, University of the Philippines Diliman, Quezon City, Philippines We construct the coherent-state path integral of the antiferromagnetic, Heisenberg model with thermal vacancies. We use the slave-boson method to account for the vacancies and the no-double occupancy constraint of the system. With the use of the Hubbard-Stratonovich transformation, we evaluate the path integral and derive the effective action. For a uniform resonating valence bond state on a square lattice, we obtain the spinon and boson dispersion relations and calculate the analytic form of the free energy. Presenter: Diane Cañeso |
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Institute of Physics, VAST
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Center for Theoretical Physics |
Center for Computational Physics
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