Similarly to the real scalar field, this has a general solution of ... <a href="http://www.physics.gla.ac.uk/~dmiller/lectures/RQF_2_2010.pdf">http://www.physics.gla.ac.uk/~dmiller/lectures/RQF_2_2010.pdf</a> General Physics (PHY 2130) PDF Ebook 3.04 MB | PDF Book Pages: - <a href="http://www.physics.wayne.edu/~apetrov/PHY2130/Lecture2.pdf">http://www.physics.wayne.edu/~apetrov/PHY2130/Lecture2.pdf</a> Cosmology Lectures given to Physics 407 Sep 27-Oct3 08 PDF Ebook 2.79 MB | PDF Book Pages: - ... notes are an informal and ad hoc introduction