85 citations · 461 across the 23 of their papers we have counts for
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Ising analogues of quantum spin chains with multispin interactions
Francisco C. Alcaraz, Rodrigo A. Pimenta, Jesko Sirker
A new family of free fermionic quantum spin chains with multispin interactions was recently introduced. Here we show that it is possible to build standard quantum Ising chains -- b…
Anomalous thermodynamics in a mixed spin-1/2 and spin-1 hexagonal nanowire system
R. A. Pimenta, O. Rojas, S. M. de Souza
The mixed spin-1/2 Ising model and spin-1 Blume-Capel model in an hexagonal nanowire structure under the presence of crystal field is considered. The free energy is obtained throug…
Free-parafermionic and free-fermionic quantum chains
Francisco C. Alcaraz, Rodrigo A. Pimenta
The relationship between the eigenspectrum of Ising and XY quantum chains is well known. Although the Ising model has a symmetry and the XY model a symmetry, both mod…
Integrable quantum spin chains with free fermionic and parafermionic spectrum
Francisco C. Alcaraz, Rodrigo A. Pimenta
We present a general study of the large family of exact integrable quantum chains with multispin interactions introduced recently in \cite{AP2020}. The exact integrability follows…
Free fermionic and parafermionic quantum spin chains with multispin interactions
Francisco C. Alcaraz, Rodrigo A. Pimenta
We introduce a new a family of multispins quantum chains with a free-fermionic () or free-parafermionic () eigenspectrum. The models have interacting spins…