Scientific Research Publishing

Read  fulll  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53357#.VMBedyzQrzE Author(s)     Eugene S. Mananga 1,2* , Jalil Moghaddasi 1 , Ajaz Sana 1 , Mostafa Sadoqi 2   Affiliation(s) 1 Physics and Technology Department, BCC, CUNY, New York, USA . 2 Physics Department, St. John’s University of New York City, New York, USA . ABSTRACT This short review article presents theories used in solid-state nuclear magnetic resonance spectroscopy. Main theories used in NMR include the average Hamiltonian theory, the Floquet theory and the developing theories are the Fer expansion or the Floquet-Magnus expansion. These approaches provide solutions to the time-dependent Schrodinger equation which is a central problem in quantum physics in general and solid-state nuclear magnetic resonance in particular. Methods of these expansion schemes used as numerical integrators for solving the time dependent Schrodinger e...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53357#.VL3P5izQrzE Author(s)    Eugene S. Mananga 1,2* , Jalil Moghaddasi 1 , Ajaz Sana 1 , Mostafa Sadoqi 2   Affiliation(s) 1 Physics and Technology Department, BCC, CUNY, New York, USA . 2 Physics Department, St. John’s University of New York City, New York, USA . ABSTRACT This short review article presents theories used in solid-state nuclear magnetic resonance spectroscopy. Main theories used in NMR include the average Hamiltonian theory, the Floquet theory and the developing theories are the Fer expansion or the Floquet-Magnus expansion. These approaches provide solutions to the time-dependent Schrodinger equation which is a central problem in quantum physics in general and solid-state nuclear magnetic resonance in particular. Methods of these expansion schemes used as numerical integrators for solving the time dependent Schrodinger equation...