Inflation at the tip

Inflation at the Tip

We study the motion of a (space filling) D3-brane at the tip of a warped deformed conifold, looking for inflationary trajectories. In our setup no anti D3-brane is present and the inflaton potential is induced by threshold corrections to the superpotential. First we study the slow roll regime and find that, allowing for fine tuning, hilltop inflation compatible with CMB data can take place. The...

Inflation at the electroweak scale.

We present a simple model for slow-rollover inflation where the vacuum energy that drives inflation is of the order of G F ; unlike most models, the conversion of vacuum energy to radiation (“reheating”) is moderately efficient. The scalar field responsible for inflation is a standard-model singlet, develops a vacuum expectation value of the order of 4×106GeV, has a mass of order 1GeV, and can ...

Intracardiac Infection at the Tip of Hemodialysis Catheter: Life threatening Morbidity

Endocarditis and intracardiac infection have been increased recently especially in dialysis dependent renal failure patients. This is usually intractable infection to broad spectrum Antibiotic therapy and in most cases surgical intervention was necessary. We have presented 45 years old man with intracardiac infection at the tip of dialysis catheter that after catheter removal intracardiac infec...

The Relation Between Inflation and Inflation Uncertainty In Iran

Relaxation of the cosmological constant at inflation?

We suggest that the cosmological constant has been relaxed to its present, very small value during the inflationary stage of the evolution of the Universe. This requires relatively low scale, very long duration and unconventional source of inflation. We present a concrete mechanism of the cosmological constant relaxation at the inflationary epoch. PACS number(s): 04.20.Cv, 98.80.Cq Typeset usin...