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Elko spinor fields: Lagrangians for gravity derived from supergravity
(2009-06-17)
Dual-helicity eigenspinors of the charge conjugation operator (ELKO spinor fields) belong - together with Majorana spinor fields - to a wider class of spinor fields, the so-called flagpole spinor fields, corresponding to ...
Sound Speed of Primordial Fluctuations in Supergravity Inflation
(2016)
We study the realization of slow-roll inflation in N = 1 supergravities where inflation is the result of the evolution of a single chiral field. When there is only one flat direction in field space, it is possible to derive ...
Superspace type II 4D supergravity from type II superstring
(2004-01-01)
We derive the equations of motion of type II 4D supergravity in superspace. This is achieved by coupling the Type II Berkovits’ hybrid superstring to an N 2 curved background and requiring that the sigma-model has N=(2,2) ...
Problems of the Supergravity Approximation to String Inflation
(2019-01-01)
Because string theory itself is not very calculable, there are few truly stringy models of cosmology. Therefore, one mostly considers the low energy limit of string theory, supergravity, as an effective field theory, and ...
ELKO SPINOR FIELDS: LAGRANGIANS FOR GRAVITY DERIVED FROM SUPERGRAVITY
(World Scientific Publ Co Pte Ltd, 2013)
General f(R) and conformal inflation from minimal supergravity plus matter
(2016-02-01)
We embed general f(R) inflationary models in minimal supergravity plus matter, a single chiral superfield Φ, with or without another superfield S, via a Jordan frame Einstein+scalar description. In particular, inflationary ...
Modelos Quadráticos em Supergravidade Calibrada N=2, D=4Quadratic Models in N=2, D=4 Gauged Supergravity
(Universidade Federal do Rio Grande do NorteBrasilUFRNFísica, 2020)
Extending SUSY reach at the CERN large hadron collider using b-tagging
(Sociedade Brasileira de Física, 2007-07-01)
We analyze the potential of the CERN Large Hadron Collider on the reach of the focus point (FP) region in the mSUGRA parameter space. This region, consistent with WMAP results, is characterized by multi-TeV masses for the ...
Probing bilinear R-parity violating supergravity at the LHC
(Springer, 2014)