978 citations
- Universidade de São PauloBR24 papers
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- Argonne National LaboratoryUS11 papers
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- Indiana University BloomingtonUS11 papers
- Institute for High Energy PhysicsES11 papers
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6 papers · 1 filter
Z_2-gradings of Clifford algebras and multivector structures
Ricardo A. Mosna, David Miralles, Jayme Vaz
Let Cl(V,g) be the real Clifford algebra associated to the real vector space V, endowed with a nondegenerate metric g. In this paper, we study the class of Z_2-gradings of Cl(V,g)…
Superinflation and quintessence in the presence of an extra field
A. Figueiredo, T. M. Rocha Filho, E. Gunzig +2
We discuss the implication of the introduction of an extra field to the dynamics of a scalar field conformally coupled to gravitation in a homogeneous isotropic spatially flat univ…
High temperature specific heat and magnetic measurements in Nd0.5Sr0.5MnO3 and R0.5Ca0.5MnO3 (R=Nd, Sm, Dy and Ho) samples
J. Lopez, O. F. de Lima
We have made a magnetic characterization of Nd0.5Sr0.5MnO3, Nd0.5Ca0.5MnO3, Sm0.5Ca0.5MnO3, Dy0.5Ca0.5MnO3 and Ho0.5Ca0.5MnO3 polycrystalline samples. Ferromagnetic, antiferromagne…
Small Fermi surface in the one-dimensional Kondo lattice model
J. C. Xavier, E. Novais, E. Miranda
We study the one-dimensional Kondo lattice model through the density matrix renormalization group (DMRG). Our results for the spin correlation function indicate the presence of a s…
Dimerization induced by the RKKY interaction
J. C. Xavier, R. G. Pereira, E. Miranda +1
We report the presence of spin dimerization in the ground state of the one dimensional Kondo lattice model at quarter filling. The emergence of this new phase of the Kondo lattice…
Magnetic structure of antiferromagnetic NdRhIn5
S. Chang, P. G. Pagliuso, Wei Bao +4
The magnetic structure of antiferromagnetic NdRhIn5 has been determined using neutron diffraction. It has a commensurate antiferromagnetic structure with a magnetic wave vector (1/…