Chaplygin-gas Solutions of f(R) Gravity
  We explore exact f(R) gravity solutions that mimic Chaplygin-gas inspired
LCDM cosmology. Starting with the original and modified Chaplygin gas equations
of state, we reconstruct the forms of f(R) Lagrangians. The resulting solutions
are generally quadratic in the Ricci scalar, but have appropriate LCDM
solutions in limiting cases. These solutions, given appropriate initial
conditions, can be potential candidates for scalar field-driven early universe
expansion (inflation) and dark energy-driven late-time cosmic acceleration.
