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What is Modified Chaplygin Gas in Cosmology about?

This document discusses a cosmological model using an exotic fluid called a "modified Chaplygin gas". It shows that the equation of state for this fluid can describe the current accelerated expansion of the universe. The fluid behaves as pressureless at small scale factors and as a cosmological constant at large scale factors, accelerating the expansion. It also explores expressing this fluid as a scalar tachyonic field, motivated by recent works relating tachyon fields to fluids with negative pressure that

Author

Netzaira

Language

EN