Corner Transfer Matrix Renormalization Group Method
نویسندگان
چکیده
منابع مشابه
Se p 19 95 Corner Transfer Matrix Renormalization Group Method
We propose a new fast numerical renormalization group method, the corner transfer matrix renormalization group (CTMRG) method, which is based on a unified scheme of Baxter's corner transfer matrix method and White's density matrix renormalization group method. The key point is that a product of four corner transfer matrices coincides with the density matrix. We formulate the CTMRG method as a r...
متن کاملComment on ‘Series expansions from the corner transfer matrix renormalization group method: the hard-squares model’
Earlier this year Chan extended the low-density series for the hard-squares partition function κ(z) to 92 terms. Here we analyse this extended series focusing on the behaviour at the dominant singularity zd which lies on the negative fugacity axis. We find that the series has a confluent singularity of order at least 2 at zd with exponents θ = 0.833 33(2) and θ ′ = 1.6676(3). We thus confirm th...
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We propose a new method for the calculation of thermodynamic properties of onedimensional quantum systems by combining the TMRG approach with the corner transfer-matrix method. The corner transfer-matrix DMRG method brings reasonable advantage over TMRG for classical systems. We have modified the concept for the calculation of thermal properties of one-dimensional quantum systems. The novel QCT...
متن کاملComment on “ Density - matrix renormalization - group method for excited states ”
In a recent paper (Phys. Rev. B 59, 9699 (1999)), Chandross and Hicks claim to present a new density matrix renormalisation group (DMRG) method for dealing with excited states of quantum lattice models. The proposed improvement to the DMRG—the inclusion of excited state wave functions in addition to the ground state in the density matrix when calculating excitations— is in fact standard pratice...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 1996
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.65.891