Связанные состояния для двух дельта-потенциалов, сосредоточенных на параллельных прямых в плоскости

Авторы

  • Александр Сергеевич Багмутов Национальный исследовательский университет ИТМО
  • Игорь Юрьевич Попов Национальный исследовательский университет ИТМО https://orcid.org/0000-0002-5251-5327

DOI:

https://doi.org/10.33910/2687-153X-2022-3-1-37-42

Ключевые слова:

спектр, вариационный принцип, потенциал на прямой

Аннотация

Мы рассматриваем сингулярные дельта-потенциалы, сосредоточенные на двух параллельных прямых в плоскости, как модель взаимодействия двух макромолекул. Потенциал имеет постоян­ную интенсивность на протяжении прямых, за исключением ограниченного отрезка на каждой прямой, где интенсивность уменьшена. Используя вариационный подход, мы изучаем спектр системы, а также получаем оценку лакуны между дискретным и непрерывным спектром как функцию расстояния между отрезками с вариацией потенциала. В заключении с помощью проб­ной функции доказывается существование хотя бы связанного состояния при любых параметрах системы.

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Опубликован

2022-04-14

Выпуск

Раздел

Theoretical Physics