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Quantum spin tunneling in a soluble quasi-spin model: an angle-based potential description
(Elsevier B.V., 2005-06-15)
We propose an approach which allows one to construct and use a potential function written in terms of an angle variable to describe interacting spin systems. We show how this can be implemented in the Lipkin-Meshkov-Glick, ...
Quantum spin tunneling in a soluble quasi-spin model: an angle-based potential description
(Elsevier B.V., 2005-06-15)
We propose an approach which allows one to construct and use a potential function written in terms of an angle variable to describe interacting spin systems. We show how this can be implemented in the Lipkin-Meshkov-Glick, ...
Quantum decoration transformation for spin models
(Elsevier, 2019)
Emptiness formation probability and PainlevéV equation in the XY spin chain
(IOP Publishing Ltd and SISSA Medialab srl, 2020)
Spin polarization in the Hubbard model with Rashba spin-orbit coupling on a ladder
(American Physical Society, 2013-07)
The competition between on-site Coulomb repulsion and Rashba spin-orbit coupling (RSOC) is studied on two-leg ladders by numerical techniques. By studying persistent currents in closed rings by exact diagonalization, it ...
Spinning particles coupled to gravity and the validity of the universality of free fall
(IOP Publishing, 2017-06-08)
Recent experimental work has determined that free falling Rb-87 atoms on Earth, with vertically aligned spins, follow geodesics, thus apparently ruling out spin-gravitation interactions. It is showed that while some spinning ...
Spin-spin indirect interaction at low-energy excitation in zero-dimensional cavities
(IOP Publishing, 2011-05)
We solve the low-energy part of the spectrum of a model that describes a circularly polarized cavity mode strongly coupled to two exciton modes, each of which is coupled to a localized spin of arbitrary magnitude. In the ...
Campos de rank alto para partículas de spin-1
(Universidade Estadual Paulista (Unesp), 2022-05-13)
É feito um estudo de modelos duais sem massa e massivos de spin-1. É proposta uma nova ação mestra para partículas sem massa de spin-1 da qual derivamos uma nova teoria dual à Maxwell em termos de um campo de "rank" 3. A ...
More on dual actions for massive spin-2 particles
(Iop Publishing Ltd, 2020-07-23)
Here we start from a dual version of Vasiliev's first order action for massless spin-2 particles (linearized first order Einstein-Hilbert) and derive, via Kaluza-Klein dimensional reduction fromD+ 1 toDdimensions, a set ...