Mukhanov has written an excellent text in cosmology for students who have a good understanding of theoretical physics at the undergraduate level.
"This book contains a thorough and modern introduction to physical cosmology...There is much in this book for experts as well as serious students of cosmology. Anyone mastering the second part of it will have a firm foundation for frontier research in theoretical cosmology."
Viqar Husain, MATHEMATICAL REVIEWS
This textbook takes an original approach to cosmology by showing where theoretical results come from, in addition to discussing the basis of modern cosmology. The book covers established material as well as bringing the reader to the frontiers of current cosmological research by the discussion of more speculative ideas. An ideal textbook for advanced students of physics and astrophysics, all of the necessary back ground material is included in every chapter and no prior knowledge of general relativity and quantum field theory is assumed.