Author Archive
363. Vector inflation
Alexey Golovnev is a research associate in the Arnold Sommerfeld Center for Theoretical Physics , U. of Munich. Dmitry.
I would like to blog about the recently proposed model of vector inflation, Golovnev, Mukhanov, Vanchurin, arXiv:0802.2068. (See also Golovnev, Mukhanov, Vanchurin, arXiv:0810.4304 and Golovnev, Vanchurin, arXiv:0903.2977 for further developments.) Inflation is one of the basic concepts in cosmology, it solves the well-known cosmological problems (for which I refer the reader to any modern textbook on cosmology, see below) by a period of very rapid (nearly exponential) increase of the size of the Universe. By a straightforward inspection of the Friedman equations, this period of accelerated expansion can be achieved with a matter content of negative pressure. As calculating the pressure basically amounts to taking the difference of kinetic and potential energies, the most natural idea to realize this type of equation of state is to “freeze” an inflaton field at a high value of its potential energy.
Read more on 363. Vector inflation…
Loading ...