Text this: Variational energy band theory for polarons : mapping polaron structure with the Merrifield method

  _____     ______    _____     ______    _____   
 /  ___||  /_   _//  /  ___||  /_   _//  / ____|| 
| // __     -| ||-  | // __     -| ||-  / //---`' 
| \\_\ ||   _| ||_  | \\_\ ||   _| ||_  \ \\___   
 \____//   /_____//  \____//   /_____//  \_____|| 
  `---`    `-----`    `---`    `-----`    `----`