30 citations · 118 across the 12 of their papers we have counts for
13 papers
Alternative Hamiltonian and Lagrangian Approaches for Constrained Systems
M. A. de Andrade, C. Neves, E. V. Corrêa Silva
While standard Hamiltonian and Lagrangian methods are powerful for unconstrained classical systems, they are not directly suited to constrained ones, despite the existence of well-…
An alternative way to explain how non-commutativity arises in the bosonic string theory
M. A. De Andrade, C. Neves
In this work we will investigate how the non-commutativity arises into the string theory, \textit{i.e.}, how the bosonic string theory attaches to a D3-brane in the presence of mag…
Noncommutative Mapping from the symplectic formalism
M. A. De Andrade, C. Neves
The Bopp's shifts will be generalized through symplectic formalism. A special procedure, like a "diagonalization", which drives the completely deformed symplectic matrix to the sta…
Vortex Solutions and a Novel Role for R-parity in an N=2-Supersymmetric Model for Graphene
Everton M. C. Abreu, Marco A. De Andrade, Leonardo P. G. De Assis +3
In a previous work, we have been able to settle Jackiw's et al. chiral gauge theory for Dirac fermions in graphene in an N=1 supersymmetric framework, using a tau3-QED prescription…
Mass Generation and Related Issues from Exotic Higher Dimensions
M. Rojas, M. A. De Andrade, L. P. Colatto +3
The main purpose of this work is to show that massless Dirac equation formulated for non-interacting Majorana-Weyl spinors in higher dimensions, particularly in D=1+9 and D=5+5, ca…
A supersymmetric model for graphene
Everton M. C. Abreu, Marco A. De Andrade, Leonardo P. G. de Assis +3
In this work, we focus on the fermionic structure of the low-energy excitations of graphene (a monolayer of carbon atoms) to propose a new supersymmetric field-theoretic model for…
Unconstrained Variables of Non-Commutative Open Strings
M. A. De Andrade, M. A. Santos, I. V. Vancea
The boundary conditions of the bosonic string theory in non-zero -field background are equivalent to the second class constraints of a discretized version of the theory. By proj…
The Signature Triality of Majorana-Weyl Spacetimes
M. A. De Andrade, M. Rojas, F. Toppan
Higher dimensional Majorana-Weyl spacetimes present space-time dualities which are induced by the Spin(8) triality automorphisms. Different signature versions of theories such as 1…
Superpropagators for explicitly broken 3D-supersymmetric theories
J. L. Boldo, L. P. Colatto, M. A. De Andrade +2
A systematic algorithm to derive superpropagators in the case of either explicitly or spontaneously broken supersymmetric three-dimensional theories is presented. We discuss how th…
Real Structures in Clifford Algebras and Majorana Conditions in Any Space-time
M. A. De Andrade, F. Toppan
Clifford algebras and Majorana conditions are analyzed in any spacetime. An index labeling inequivalent -structures up to orthogonal conjugations is introduced. Inequivalent cha…
Renormalization of the N=1 Abelian Super-Chern-Simons Theory Coupled to Parity-Preserving Matter
L. P. Colatto, M. A. De Andrade, O. M. Del Cima +3
We analyse the renormalizability of an Abelian N=1 super-Chern-Simons model coupled to parity-preserving matter on the light of the regularization independent algebraic method. The…
Electron-pair condensation in parity-preserving QED3
M. A. De Andrade, O. M. Del Cima, J. A. Helayël-Neto
In this paper, we present a parity-preserving QED3 with spontaneous breaking of a local U(1)-symmetry. The breaking is accomplished by a potential of the \vf^6-type. It is shown th…
Some Properties of Charge-Conjugated Spinors in dimensions
M. A. De Andrade
Spinors for an arbitrary Minkowski space with signature (, ) are reassessed in connection with -dimensional free Dirac action. The possibility of writing down kinetic and…