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Magnetization plateaus in dimerized spin-ladder arrays
(American Physical Society, 2000-12)
We investigate the ground-state magnetization plateaus appearing in spin-(Formula presented) two-leg ladders built up from dimerized antiferromagnetic Heisenberg chains and dimerized zig-zag interchain couplings. Using ...
On the Marginal Distribution of the Diagonal Blocks in a Blocked Wishart Random Matrix
(2016)
Let A be a (m(1) + m(2)) x (m(1) + m(2)) blocked Wishart random matrix with diagonal blocks of orders m(1) x m(1) and m(2) x m(2). The goal of the paper is to find the exact marginal distribution of the two diagonal blocks ...
Exact diagonalization of two quantum models for the damped harmonic oscillator
(American Physical SocCollege PkEUA, 2000)
Plaquette valence-bond solid in the square-lattice J(1)-J(2) antiferromagnet Heisenberg model: A bond operator approach
(Amer Physical SocCollege PkEUA, 2014)
Maximum Entropy Variational Approach to Collective States
(Springer, 1993)
Energy of bond defects in quantum spin chains obtained from local approximations and from exact diagonalization
(ELSEVIER SCIENCE BV, 2008)
We study the influence of ferromagnetic and antiferromagnetic bond defects on the ground-state energy of antiferromagnetic spin chains. In the absence of translational invariance, the energy spectrum of the full Hamiltonian ...
On the first approximation of the K-harmonics method
(1977-01-01)
Formulas for the calculation of two-body central interactions in the first approximation of the K-harmonics method are presented. These formulas are exact and account for diagonal and off-diagonal matrix elements as well. ...