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

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發送短信 : Topological transitions with an imaginary Aubry-André-Harper potential