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29 papers · 1 filter
Minimal non-universal EW extensions of the Standard Model: a chiral multi-parameter solution
Richard H. Benavides, Luis Alfredo Muñoz, William A. Ponce +2
We report the most general expression for the chiral charges of a non-universal with identical charges for the first two families but different charges for the third one. T…
Automatic Identification of Scenedesmus Polymorphic Microalgae from Microscopic Images
Jhony-Heriberto Giraldo-Zuluaga, Geman Diez, Alexander Gomez +4
Microalgae counting is used to measure biomass quantity. Usually, it is performed in a manual way using a Neubauer chamber and expert criterion, with the risk of a high error rate.…
CMB anomalies and the effects of local features of the inflaton potential
Alexander Gallego Cadavid, Antonio Enea Romano, Stefano Gariazzo
Recent analysis of the WMAP and Planck data have shown the presence of a dip and a bump in the spectrum of primordial perturbations at the scales Mpc and $k=0.00…
Newton gauge cosmological perturbations for static spherically symmetric modifications of the de Sitter metric
Camilo Santa Velez, Antonio Enea Romano
Static coordinates can be convenient to solve the vacuum Einstein's equations in presence of spherical symmetry, but for cosmological applications comoving coordinates are more sui…
General calculation of the cross section for dark matter annihilations into two photons
Camilo Garcia-Cely, Andres Rivera
Assuming that the underlying model satisfies some general requirements such as renormalizability and CP conservation, we calculate the non-relativistic one-loop cross section for a…
The maximum sizes of large scale structures in alternative theories of gravity
Sourav Bhattacharya, Konstantinos F. Dialektopoulos, Antonio Enea Romano +2
The maximum size of a cosmic structure is given by the maximum turnaround radius -- the scale where the attraction due to its mass is balanced by the repulsion due to dark energy.…