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Autor López Maroto, Antonio |
Documentos disponibles escritos por este autor (100)
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In this work we consider the most general electromagnetic theory in curved space-time leading to linear second order differential equations, including non-minimal couplings to the space time curvature. We assume the presence of a temporal electr[...]![]()
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If dark energy can be described as a perfect fluid, then, apart from its equation of state relating energy density and pressure, we should also especify the corresponding rest frame. Since dark energy is typically decoupled from the rest of comp[...]![]()
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Is there an absolute cosmic electric potential? The recent discovery of the accelerated expansion of the universe could be indicating that this is certainly the case. In this essay we show that the consistency of the covariant and gauge-invarian[...]![]()
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Ruiz Cembranos, José Alberto ; Dobado González, Antonio ; López Maroto, Antonio | World Scientific Publ Co Pte Ltd | 2004-12Extra-dimensional theories contain additional degrees of freedom related to the geometry of the extra space which can be interpreted as new particles. Such theories allow to reformulate most of the fundamental problems of physics from a complete[...]![]()
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Ruiz Cembranos, José Alberto ; Dobado González, Antonio ; López Maroto, Antonio | American Physical Society | 2006-03We study the possibility to explain the nonbaryonic dark matter abundance and improve the present fits on the muon anomalous magnetic moment through the same new physics. In this work we show that massive brane fluctuations (branons) in large ex[...]![]()
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López Maroto, Antonio ; Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Gammaldi, Viviana | American Physical Society | 2012-02-07Branons are new degrees of freedom that appear in flexible brane-world models corresponding to brane fluctuations. These new fields can behave as standard weakly interacting massive particles (WIMPs) with a significant associated thermal relic d[...]![]()
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Ruiz Cembranos, José Alberto ; López Maroto, Antonio | World Scientific Publ Co Pte Ltd | 2016-05-30Scalar particles coupled to the Standard Model fields through a disformal coupling arise in different theories, such as massive gravity or brane-world models. We will review the main phenomenology associated with such particles. Distinctive disf[...]![]()
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Ruiz Cembranos, José Alberto ; López Maroto, Antonio | World Scientific Publ Co Pte Ltd | 2016-05-30Scalar particles coupled to the Standard Model fields through a disformal coupling arise in different theories, such as massive gravity or braneworld models. We will review the main phenomenology associated with such particles. Distinctive disfo[...]![]()
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Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; López Maroto, Antonio | Amer Physical Soc | 2011-01-25![]()
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Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; López Maroto, Antonio | American Physical Society | 2008-06In the context of f(R) theories of gravity, we study the evolution of scalar cosmological perturbations in the metric formalism. Using a completely general procedure, we find the exact fourth-order differential equation for the matter density pe[...]![]()
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We consider nonlocal gravity theories that include tensor nonlocalities. We show that in the cosmological context, the tensor nonlocalities, unlike scalar ones, generically give rise to growing modes. An explicit example with quadratic curvature[...]![]()
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Finite-temperature corrections to the effective potential and the energy-momentum tensor of a scalar field are computed in a perturbed Minkoswki spacetime. We consider the explicit mode decomposition of the field in the perturbed geometry and ob[...]![]()
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Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; Lineros, R. ; López Maroto, Antonio | IOP publishing ltd | 2011Annihilation of different dark matter (DM) candidates into Standard Model (SM) particles could be detected through their contribution to the gamma ray fluxes that are measured on the Earth. The magnitude of such contributions depends on the part[...]![]()
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