Initial Conditions for Imperfect Dark Matter

TL;DR

This paper examines the initial conditions of Imperfect Dark Matter, demonstrating they are adiabatic under common cosmological assumptions, which supports its viability in cosmological models.

Contribution

It provides a detailed analysis showing that initial conditions for Imperfect Dark Matter are naturally adiabatic, reinforcing its theoretical consistency.

Findings

Initial conditions are adiabatic under moderate assumptions

Supports the viability of Imperfect Dark Matter in cosmology

Provides theoretical foundation for further studies

Abstract

We discuss initial conditions for the recently proposed Imperfect Dark Matter (Modified Dust). We show that they are adiabatic under fairly moderate assumptions about the cosmological evolution of the Universe at the relevant times.