Abstract:
Boundary conditions strongly affect the results of numerical computations for finite size inhomogeneous or incommensurate structures. We present a method which allows to deal with this problem, both for ground state and for critical properties: it combines fluctuating boundary conditions and specific histogram techniques. Our approach concerns classical systems possessing a continuous symmetry as well as quantum systems. In particular, current-current correlation functions, which probe large scale coherence of the states, can be accurately evaluated. We illustrate our method on a frustrated two dimensional XY model.
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Received: 9 September 1997 / Revised: 17 October 1997 / Accepted: 3 November 1997
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Benakli, M., Gabay, M. & Saslow, W. Boundary condition histograms for modulated phases. Eur. Phys. J. B 1, 197–204 (1998). https://doi.org/10.1007/s100510050171
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DOI: https://doi.org/10.1007/s100510050171