output
19922026
most citedAncient human genomes suggest three ancestral populations for present-day Europeans

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Showing 2011Show all

11 papers · 1 filter

astro-ph.SR2011★ 16 cited

On the relativistic precession and oscillation frequencies of test particles around rapidly rotating compact stars

Leonardo A. Pachon, Jorge A. Rueda, Cesar A. Valenzuela-Toledo

Whether analytic exact vacuum(electrovacuum) solutions of the Einstein(Einstein-Maxwell) field equations can accurately describe or not the exterior spacetime of compact stars rema…

hep-ph2011★ 41 cited

Gravitino dark matter and neutrino masses with bilinear R-parity violation

Diego Restrepo, Marco Taoso, J. W. F. Valle +1

Bilinear R-parity violation provides an attractive origin for neutrino masses and mixings. In such schemes the gravitino is a viable decaying dark matter particle whose R-parity vi…

hep-ph2011★ 5 cited

Neutrino masses in with adjoint flavons

Enrico Nardi, Diego Restrepo, Mauricio Velasquez

We present a supersymmetric model for neutrino masses and mixings that implements the seesaw mechanism by means of the heavy SU(2) singlets and triplets states…

hep-ph2011★ 9 cited

Scalar Potential Without Cubic Term in 3-3-1 Models Without Exotic Electric Charges

Yithsbey Giraldo, William A. Ponce

A detailed study of the criteria for stability of the scalar potential, and the proper electroweak symmetry breaking pattern in some 3-3-1 models without exotic electric charges is…

astro-ph.CO2011★ 56 cited

Large and strong scale dependent bispectrum in single field inflation from a sharp feature in the mass

Frederico Arroja, Antonio Enea Romano, Misao Sasaki

We study an inflationary model driven by a single minimally coupled standard kinetic term scalar field with a step in its mass modeled by an Heaviside step function. We present an…

astro-ph.CO2011★ 2 cited

Can smooth LTB models mimicking the cosmological constant for the luminosity distance also satisfy the age constraint?

Antonio Enea Romano

The central smoothness of the functions defining a LTB solution plays a crucial role in their ability to mimick the effects of the cosmological constant. So far attention has been…