165 citations · 633 across the 36 of their papers we have counts for
7 papers · 1 filter
Charge and spin dynamics in the one-dimensional and models
Shu Zhang, Michael Karbach, Gerhard Müller +1
The impact of the spin-flip terms on the (static and dynamic) charge and spin correlations in the Luttinger-liquid ground state of the 1D model is assessed by comparison with…
Two-spinon dynamic structure factor of the one-dimensional S=1/2 Heisenberg antiferromagnet
Michael Karbach, Gerhard Müller, A. Hamid Bougourzi
The exact expression derived by Bougourzi, Couture, and Kacir for the 2-spinon contribution to the dynamic spin structure factor of he one-dimensional =1/2 Heisenb…
Dimer and Néel order-parameter fluctuations in the spin-fluid phase of the s=1/2 spin chain with first and second neighbor couplings
Yongmin Yu, Gerhard Müller, V. S. Viswanath
The dynamical properties at T=0 of the one-dimensional (1D) s=1/2 nearest-neighbor (nn) XXZ model with an additional isotropic next-nearest-neighbor (nnn) coupling are investigated…
Order-parameter fluctuations in the frustrated Heisenberg model on the square lattice
Shu Zhang, Gerhard Müller
The dynamics of the two-dimensional Heisenberg model with competing nearest-neighbor and next-nearest-neighbor interactions is explored via the recurs…
Impact of criticality and phase separation on the spin dynamics of the one-dimensional t-J model
Shu Zhang, Gerhard Müller, Joachim Stolze
The recursion method is used to determine the T=0 spin dynamic structure factor S_{zz}(q,ω) in the Luttinger liquid state and in the phase-separated state of the one-dimensional t-…
Dynamics of quantum spin systems in dimer and valence-bond solid ground states stabilized by competing interactions
Yongmin Yu, Gerhard Müller
For special coupling ratios, the one-dimensional (1D) s=1/2 Heisenberg model with antiferromagnetic nearest and next-nearest neighbor interactions has a pure dimer ground state, an…
Spin correlation functions in random-exchange s=1/2 XXZ chains
Heinrich Röder, Joachim Stolze, Richard N. Silver +1
The decay of (disorder-averaged) static spin correlation functions at T=0 for the one-dimensional spin-1/2 XXZ antiferromagnet with uniform longitudinal coupling and random tr…