Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Pfannmueller, Markus"'
Publikováno v:
Phys. Rev. Lett. 81, 2116 (1998)
An exactly soluble model describing a spin S=1 antiferromagnetic chain doped with mobile S=1/2 carriers is constructed. In its continuum limit the undoped state is described by three gapless Majorana fermions composing the SU(2) triplet. Doping adds
Externí odkaz:
http://arxiv.org/abs/cond-mat/9803145
Autor:
Pfannmüller, Markus P., Frahm, Holger
Publikováno v:
Nucl.Phys. B479 (1996) 575-593
Four dimensional irreducible representations of the superalgebra gl(2,1) carry a free parameter. We compute the spectra of the corresponding transfer matrices by means of the nested algebraic Bethe ansatz together with a generalized fusion procedure.
Externí odkaz:
http://arxiv.org/abs/cond-mat/9604082
The scaling exponent and scaling function for the 1D single species coagulation model $(A+A\rightarrow A)$ are shown to be universal, i.e. they are not influenced by the value of the coagulation rate. They are independent of the initial conditions as
Externí odkaz:
http://arxiv.org/abs/cond-mat/9402019
We consider the coagulation-decoagulation model on an one-dimensional lattice of length $L$ with open boundary conditions. Based on the empty interval approach the time evolution is described by a system of $\frac{L(L+1)}{2}$ differential equations w
Externí odkaz:
http://arxiv.org/abs/cond-mat/9402018
The finite-size scaling function and the leading corrections for the single species 1D coagulation model $(A + A \rightarrow A)$ and the annihilation model $(A + A \rightarrow \emptyset)$ are calculated. The scaling functions are universal and indepe
Externí odkaz:
http://arxiv.org/abs/cond-mat/9402017