6 papers
Non Linear Lorentz Transformation and Doubly Special Relativity
A. N. Atehortua, D. E. Jaramillo, J. M. Mira +1
We generate non-linear representations of the Lorentz Group by unitary transformation over the Lorentz generators. To do that we use deformed scale transformations by introducing m…
Landau-Zener Probability Reviewed
C. Valencia, D. E. Jaramillo
We examine the survival probability for neutrino propagation through matter with variable density. We present a new method to calculate the level-crossing probability that differs…
The Lorentz Group, a Galilean Approach
D. Jaramillo, N. Vanegas
We present a pedagogical approach to the Lorentz group. We start by introducing a compact notation to express the elements of the fundamental representation of the rotations group.…
How many family-independent, independent U(1)'s, can we gauge?
William A. Ponce, John F. Zapata, Daniel E. Jaramillo.
In the context of SU(3)_c x SU(2)_L x [U(1)]^n, SU(3)_c x SU(2)_L x SU(2)_R x [U(1)]^n' and SU(3)_c x SU(3)_L x[U(1)]^n'', we analyze the possible values for n, n' and n''. That is…
The Faddeev-Popov term reviewed
D. E. Jaramillo, J. H. Munoz, A. Zepeda
Some textbooks and reports claim that the Jacobian which arises in the discussion of the Faddeev-Popov method to quantize non-Abelian gauge theories and which is given by the deriv…
Symmetry Breaking in
A. Pérez-Lorenzana, D. E. Jaramillo, William A. Ponce +1
We analize the different ways for the spontaneous breaking of the gauge symmetry, for the family unification model. In particular we study the consequences o…