Interpreting the cosmic far-infrared background anisotropies using a gas
  regulator model
  Cosmic far-infrared background (CFIRB) is a powerful probe of the history of
star formation rate (SFR) and the connection between baryons and dark matter
across cosmic time. In this work, we explore to which extent the CFIRB
anisotropies can be reproduced by a simple physical framework for galaxy
evolution, the gas regulator (bathtub) model. This model is based on continuity
equations for gas, stars, and metals, taking into account cosmic gas accretion,
star formation, and gas ejection. We model the large-scale galaxy bias and
small-scale shot noise self-consistently, and we constrain our model using the
CFIRB power spectra measured by Planck. Because of the simplicity of the
physical model, the goodness of fit is limited. We compare our model
predictions with the observed correlation between CFIRB and gravitational
lensing, bolometric infrared luminosity functions, and submillimetre source
counts. The strong clustering of CFIRB indicates a large galaxy bias, which
corresponds to haloes of mass $10^{12.5} M_\odot$ at z=2, higher than the mass
associated with the peak of the star formation efficiency. We also find that
the far-infrared luminosities of haloes above $10^{12} M_\odot$ are higher than
the expectation from the SFR observed in ultraviolet and optical surveys.
