Photoinduced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>η</mml:mi></mml:math>-pairing at finite temperatures

Abstract

The paper presents photoinduced $\ensuremath{\eta}$-pairing in a half-filled infinite Hubbard chain at finite temperatures by means of unbiased numerical techniques. The authors excite the Mott insulating phase by a light pulse and monitor the time-evolution of the many-body system after irradiation, and show the enhancement of $\ensuremath{\eta}$-pairing correlations and how to control it.