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16 papers · 2 filters
Standard Model Neutrinos as Warm Dark Matter
Gian F. Giudice, Edward W. Kolb, Antonio Riotto +2
Standard Model neutrinos are not usually considered plausible dark matter candidates because the usual treatment of their decoupling in the early universe implies that their mass m…
The Non-commutative Brane World
Luigi Pilo, Antonio Riotto
We propose a new higher-dimensional mechanism to localize scalar fields as well as fermionic and gauge fields. The underlying theory is a six-dimensional non-commutative field theo…
(De)Stabilization of an extra dimension due to a Casimir force
Ralf Hofmann, Panagiota Kanti, Maxim Pospelov
We study the stabilization of one spatial dimension in (p+1+1)-dimensional spacetime in the presence of -dimensional brane(s), a bulk cosmological constant and the Casimir force…
Is nonperturbative inflatino production during preheating a real threat to cosmology?
Rouzbeh Allahverdi, Mar Bastero-Gil, Anupam Mazumdar
We discuss toy models where supersymmetry is broken due to non-vanishing time-varying vacuum expectation value of the inflaton field during preheating. We discuss the production of…
Leptogenesis in a Realistic Supersymmetric Model of Inflation with a Low Reheat Temperature
M. Bastero-Gil, S. F. King
We discuss leptogenesis in a realistic supersymmetric model of inflation with a low reheat temperature 1-10 GeV. The lepton asymmetry is generated by a decaying right handed sneutr…
A Constrained Standard Model from a Compact Extra Dimension
Riccardo Barbieri, Lawrence J. Hall, Yasunori Nomura
A SU(3) \times SU(2) \times U(1) supersymmetric theory is constructed with a TeV sized extra dimension compactified on the orbifold S^1/(Z_2 \times Z_2'). The compactification brea…