We investigate the possibility to assist the numerically ill-posed calculation of spectral properties of interacting quantum systems in thermal equilibrium by extending the imaginary-time simulation to a finite Schwinger-Keldysh contour. The effect of this extension is tested within the standard maximum entropy approach to analytic continuation. We find that the inclusion of real-time data impr...

Background: In traditional laparoscopic colorectal cancer surgery, the surgeon’s method assess intestinal stumps blood supply is subject to certain subjectivity and blindness. Indocyanine green (ICG) real-time perfusion fluorescence angiography in radical resection of rectal has great potential clinical value can visually judge tract improve surgery safety, reduce postoperative complications, e...

We investigate the gluon Green’s function in the high energy limit of QCD using a recently proposed iterative solution of the Balitsky–Fadin–Kuraev–Lipatov (BFKL) equation at next–to–leading logarithmic (NLL) accuracy. To establish the applicability of this method in the NLL approximation we solve the BFKL equation as originally written by Fadin and Lipatov, and compare the results with previou...